СПОСОБ ПОЛУЧЕНИЯ ВУЛКАНИЗУЕМЫХ ПЕРОКСИДАМИ ГАЛОГЕНБУТИЛЬНЫХ ИОНОМЕРОВ С ВЫСОКИМ СОДЕРЖАНИЕМ МУЛЬТИОЛЕФИНА

Изобретение относится к способу получения вулканизуемых пероксидами галогенбутильных иономеров с высоким содержанием мультиолефина. Способ получения галогенбутильного иономера с высоким содержанием мультиолефина включает полимеризацию смеси мономеров, содержащей 80-95 мас.% изобутенового мономера и 4-20 мас.% изопренового мономера в присутствии АlСl3 и источника протонов и/или карбокатионного соединения или силилиевого катионного соединения, способного инициировать полимеризацию и 0,01-1,0 мас.% мультиолефинового сшивающего агента, галогенирование бутильного полимера и взаимодействие с нуклеофилом на основе фосфора. Изобретение позволяет получить галогенбутильный иономер с высоким содержанием мультиолефина от около 2 до 10 мол.%. 2 н. и 9 з.п. ф-лы, 1 табл.

ЭЛАСТОМЕРНЫЕ КОМПОЗИЦИИ

Изобретение относится к эластомерной композиции, используемой при производстве шин, например для изготовления протекторов шин и боковин шин, включающей, по меньшей мере, один наполнитель, серную вулканизующую группу и, по меньшей мере, один тройной сополимер дериватизированных из изоолефина с С4 по C8 звеньев, дериватизированных из мультиолефина с С4 по С14 звеньев и деривантизированных из п-алкилстирола звеньев, а также к способу получения такой композиции. Способ получения композиции включает совмещение в разбавителе мономеров в присутствии кислоты Льюиса и, по меньшей мере, одного инициатора с получением указанного выше тройного сополимера, который затем совмещают с вулканизующей группой, состоящей из оксида металла, элементарной серы и, необязательно, ускорителя на серной основе, и с наполнителем. Композиция обладает улучшенными значениями сопротивления истиранию, силой сцепления с мокрым и заснеженным покрытием и эластичностью. 2 н. и 34 з.п. ф-лы, 14 табл., 1 ил.

ЭЛАСТОМЕРНЫЕ СМЕСИ НА ИЗОБУТИЛЕНОВОЙ ОСНОВЕ, ОБЛАДАЮЩИЕ ПОВЫШЕННОЙ ПРОЧНОСТЬЮ И ЭЛАСТИЧНОСТЬЮ И ПОНИЖЕННОЙ ПРОНИЦАЕМОСТЬЮ

Изобретение относится к полимерам на изобутиленовой основе, в частности к галоидированным полимерам, обладающим повышенной прочностью до обработки и повышенной непроницаемостью, а также к способу их получения. Барьерный тонкий слой для резиновых изделий включает полимер на изобутиленовой основе и 3-95 мас.% полукристаллического полимера, обладающего температурой плавления от примерно 25 до примерно 105°С и теплотой плавления от примерно 9 до примерно 50 Дж/г, как это определяют дифференциально сканирующей калориметрией, причем этот тонкий слой невулканизован. Барьерный тонкий слой используют для внутренней оболочки шины и автомобильной камеры. В смеси для резиновых изделий содержится полукристаллический пропиленовый полимер с содержанием примерно 75 мас.% пропиленовых звеньев. Приготавливают смесь на обычном оборудовании резинового производства. Технический результат состоит в улучшении прочности до обработки, относительного удлинения до обработки и релаксационных свойств до обработки при ...

СИСТЕМА И СПОСОБ ДЛЯ ГАЛОГЕНИРОВАНИЯ ЭЛАСТОМЕРОВ НА ОСНОВЕ ОЛЕФИНА В ОБЪЕМНОЙ ФАЗЕ

Изобретение относится к системе и способу для галогенирования эластомера на основе олефина в объемной фазе. Система для галогенирования эластомера на основе олефина включает первый экструдер, емкость первого пластикатора, расположенную вниз по потоку от указанного первого экструдера и гидравлически соединенную с указанным первым экструдером, второй экструдер, расположенный вниз по потоку от указанной емкости первого пластикатора и гидравлически соединенный с указанной емкостью первого пластикатора, емкость второго пластикатора, расположенную вниз по потоку от указанного второго экструдера и гидравлически соединенную с указанным вторым экструдером, и третий экструдер, расположенный вниз по потоку от указанного второго пластикатора и гидравлически соединенный с указанной емкостью второго пластикатора. Изобретение обеспечивает улучшение характеристик вулканизации эластомеров. 2 н. и 12 з.п. ф-лы, 1 ил.

БРОМИРОВАННЫЕ ПОЛИМЕРЫ В КАЧЕСТВЕ ПЛАМЯГАСИТЕЛЕЙ И СОДЕРЖАЩИЕ ИХ ПОЛИМЕРНЫЕ СИСТЕМЫ

Изобретение относится к препятствующим воспламенению добавкам для органических полимеров. Пламегасящая полимерная композиция включает горючий полимер, смешанный в ней с бромированной пламегасящей добавкой, выбранной из числа одного или нескольких приведенных ниже соединений: (i) сополимера, содержащего стирольные и 2,3-дибромпропилмалеинимидные повторяющиеся звенья; (ii) бромированного сложного полиэфира, содержащего связанные с алифатическими группами атомы брома; (iii) простого аллилового эфира бромированной по кольцу новолачной смолы; (iv) простого 3-бром-2-гидроксипропилового эфира новолачной смолы; (v) простого 2,3-дибромпропилового эфира крезолноволачной смолы, и (vi) бромированного полимера или сополимера, полученного методом ROMP. Изобретение обеспечивает устойчивость пламегасящей добавки при повышенных температурах, низкую токсичность и исключение значительных потерь физических свойств полимера при ее применении. 6 з.п. ф-лы, 10 пр.

СПОСОБ ПОЛУЧЕНИЯ БРОМБУТИЛКАУЧУКА

Изобретение относится к области получения бромбутилкаучука, применяемого в шинной и резинотехнической промышленности для изготовления гермослоя бескамерных шин, клеевых композиций, теплостойких лент, герметизирующих составов. Способ осуществляют обработкой бромирующим агентом в среде инертного углеводородного растворителя. Способ включает стадии нейтрализации, промывки, дегазации раствора и сушки бромбутилкаучука, а также включает стадию рекуперации брома из полученных водных растворов окислением соединений брома молекулярным хлором и экстракцией образующегося молекулярного брома углеводородным растворителем. На стадии бромирования и в качестве экстрагента при рекуперации используют один и тот же углеводородный растворитель, при этом молекулярный хлор используют без растворителя или в том же растворителе. Образующийся при нейтрализации и промывке водный раствор направляют сразу на стадию рекуперации без обработки, а процесс окисления соединений брома совмещают с процессом экстракции молекулярного ...

ГАЛОГЕНИРОВАННЫЕ БУТИЛКАУЧУКИ С ПОНИЖЕННЫМ СОДЕРЖАНИЕМ ГАЛОГЕНА

Изобретение касается галогенированных бутилкаучуков для вулканизатов, обладающих повышенной стойкостью к образованию трещин при одновременной повышенной адгезии, которые содержат от 0,5 до 2,5% галогена, больше 0, 7 мол.% остаточных непрогалогенированных двойных связей и от 1,0 до 2,2 вес.% агентов, контролирующих антиагломерацию и вулканизацию, в расчете на общее количество галогенируемого каучука. Описанные свойства позволят при необходимости не использовать смеси галогенированных и негалогенированных бутилкаучуков. 3 табл.

БУТИЛОВЫЙ КАУЧУК С НОВЫМ РАСПРЕДЕЛЕНИЕМ ПОСЛЕДОВАТЕЛЬНОСТЕЙ МОНОМЕРНЫХ ЗВЕНЬЕВ

FIELD: chemistry.SUBSTANCE: invention relates to a method of producing a copolymer of isobutylene and isoprene, a copolymer obtained using said method and a polymer article containing a copolymer. Method of producing a copolymer of isobutylene and isoprene consists in that, at step (a), a diluent and a mixture of monomers containing isobutylene and isoprene are taken, and a reaction medium is obtained. Weight ratio of the mixture of monomers and the diluent ranges from 5:95 to 95:5. Step (b) comprises polymerising a mixture of monomers inside the reaction medium in the presence of a system of initiators to form a copolymer solution containing a copolymer which is mainly dissolved in a reaction medium containing a diluent and residual monomers. Further, at step (c) residual monomers are separated from reaction medium. Step (b) is carried out at temperature in range from -95 °C to -60 °C. Diluent contains at least 95.0 wt. % of one or more aliphatic hydrocarbons having a boiling point in range of 5 °C to 95°C at pressure of 1013 hPa, and contains maximum 1.0 wt. % of halogenated hydrocarbons. Copolymer of isobutylene and isoprene has a sequence of monomer links of the copolymer, determined using equation (I) F = mA / (1 + mA)(equation I), in which A is molar ratio of isoprene to isobutylene in copolymer defined byH NMR, F is a fraction of the isoolefin-isoprene-isoprene triad in the copolymer, determined byS NMR; m is in the range of [1.30-(0.025×MOS)]≥m≥[1.15- (0.025×MOS)], MOS content of isoprene in copolymer in mol. % determined byH NMR. A polymer article is obtained from the above copolymer in a cured or non-cured form.EFFECT: invention enables to obtain isobutylene and isoprene copolymers which have a uniform distribution of polymer crosslinking centers and a lower value of m.42 cl, 2 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 695 670 C2 (51) МПК C08F 210/12 (2006.01) C08F 6/06 (2006.01) C08F 2/04 (2006.01) C08F 8/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ...

Блок-сополимер сопряженного диена и моновинилароматического углеводорода, модифицированный галогеном блок-сополимер на его основе, способ получения модифицированного галогеном блок-сополимера, применение модифицированного блок-сополимера в качестве антипирена и материал на основе полистирола, содержащий антипирен

Изобретение относится к модифицированным галогеном бутадиен-стирольным блок-сополимерам, которые могут быть использованы в качестве антипиренов для полимерных композиций на основе вспенивающегося полистирола. Предложены блок-сополимер сопряженного диена и моновинилароматического углеводорода, характеризующийся среднемассовой молекулярной массой (Mw) от 70000 до 120000 г/моль, имеющий бимодальное молекулярно-массовое распределение, причем содержание низкомолекулярной фракции составляет от 98,5 до 40 мас.% в пересчете на общую массу блок-сополимера, содержание высокомолекулярной фракции составляет от 1,5 до 60 мас.% в пересчете на общую массу блок-сополимера и соотношение (X) среднемассовой молекулярной массы низкомолекулярной фракции (Mw1) к среднемассовой молекулярной массе высокомолекулярной фракции (Mw2) составляет от 1:1,1 до 1:10; модифицированный галогеном предложенный блок-сополимер сопряженного диена и моновинилароматического углеводорода; способ получения предложенного модифицированного ...

БУТИЛОВЫЙ КАУЧУК С НОВЫМ РАСПРЕДЕЛЕНИЕМ ПОСЛЕДОВАТЕЛЬНОСТЕЙ МОНОМЕРНЫХ ЗВЕНЬЕВ

СПОСОБ И УСТРОЙСТВО ДЛЯ ПОЛУЧЕНИЯ ГАЛОГЕНИРОВАННОГО БУТИЛКАУЧУКА С УМЕНЬШЕННЫМИ ПОТЕРЯМИ

... 1. Способ для непрерывного получения галогенированного бутилкаучука, при этом способ включает по меньшей мере следующие этапы:а. обеспечения суспензии бутилкаучука, содержащей бутилкаучук и воду;b. растворения бутилкаучука из суспензии бутилкаучука в негалогенированном органическом растворителе для получения бутилкаучкового клея в воде;с. фазового отделения воды от каучукового клея в закрытом сепараторе с получением при этом межфазного слоя в сепараторе; иd. галогенирования каучукового клея с получением тем самым галогенированного бутилкаучука.2. Способ по п.1, отличающийся тем, что этап а. осуществляют непрерывно.3. Способ по п.1, отличающийся тем, что этапы b. и с. осуществляют в одном и том же закрытом резервуаре.4. Способ по п.3, отличающийся тем, что резервуар разделен на закрытую зону растворения, где осуществляют этап b., и закрытую зону разделения, где осуществляют этап с.5. Способ по п.3, отличающийся тем, что поток, проходящий через резервуар, является практически горизонтальным ...

ДИСПЕРГАТОРЫ НА ОСНОВЕ ПРОИЗВОДНЫХ ПОЛИОЛЕФИНА

Способ хлорирования полиэтилена высокой плотности

Preparing chlorinated polyolefin(s) useful in dyes and inks - by mixing polyolefin modified by grafting with unsatd. carboxylic acid and paraffinic hydrocarbon(s)

Chlorinated polyolefins (I) prepn. comprises mixing a polyolefin or a polyolefin anodified by grafting with unsatd. carboxylic acid and paraffinic hydrocarbons having a carbon number of no less than eight, followed by chlorination to a Cl content of 5-75% at a temp. at which the mixt. remains liq. USE/ADVANTAGE - (I) are used in dyes and inks. They are produced via a simple process and have excellent solubility in organic solvents. The process results in a high yield of chlorinated polyolefins and chlorinated paraffins.

Verfahren zur Herstellung von Polymeren mit tertiären Chloridendgruppen.

Verfahren zur Herstellung von Polyaethylen-Chlorierungsprodukten

ELASTOMERE PFROPFCOPOLYMERE UND IHRE VERWENDUNG ALS KOMPATIBILISIERUNGSMITTEL

Para-Alkylstyren/Isoolefin-Copolymere

Verfahren zur Herstellung vulkanisierter elastomerer Formkoerper

Polymerharze und deren Verwendung

TEILFLUOROESTER ODER THIOESTER VON MALEINSÄUREPOLYMEREN UND DEREN VERWENDUNG ALS SCHMUTZ- UND FLECKABWEISENDE MITTEL

Verfahren zur kontinuierlichen Chlorierung oder Chlorsulfonierung von AEthylenpolymerisaten

MIT FLUORVERBINDUNGEN AUFGEPFROPFTEN POLYMERISATEN

Verfahren zur Erhoehung der Ritzhaerte und Festigkeit von Glasgegenstaenden, insbesondere Glasflaschen

VERFAHREN ZUR CLORIERUNG VON POLYAETHYLEN

Verfahren zur Nachchlorierung von Polyvinylchlorid

Verfahren zur Herstellung stabiler Halogenaddukte alkylierter Polymerer heterocyclischer N-Vinylmonomerer

Thermoplastische Masse zur Herstellung schlagfester Formkoerper

Trockenchlorierungsverfahren fuer Polyvinylchlorid

Chlorinated polyvinyl chloride

A process for separating chlorinated polyvinyl chloride from solutions thereof in tetrachlorethane comprises agitating said solution while adding thereto a mixture consisting of 4 parts of tetrachlorethane and 1.5 to 4 parts of methanol by volume until precipitation occurs. The polymer may be recovered by filtration. In a further step methanol may be added before filtration to bring the volume ratio to approximately 1 to 1, when the filtrate may be recycled for use in the separation step, after adjustment of the tetrachlorethane concentration by evaporation of some of the methanol if necessary. Specification 401,200 is referred to.

POLYMERIC MATERIALS

... 1,216,916. After-chlorinated vinyl chloride copolymer. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 July, 1969 [22 Aug., 1968], No. 40235/68. Heading C3P. An after-chlorinated vinyl chloride copolymer is obtained by (1) polymerizing vinyl chloride at a first polymerization temperature, (2) when at least 40% has been polymerized, adding a comonomer in an amount less than the remaining vinyl chloride monomer, (3) polymerizing the mixture at a temperature at least 5‹ C. higher than the first and (4) chlorinating the product. In examples, the comonomers used are vinyl acetate and propylene added in an amount of 2À6% of the total vinyl chloride after 66% conversion using suspension technique and chlorination is effected in carbon tetrachloride in the presence of azodiisobutyronitrile. Reference has been directed by the Comptroller to Specification 1,178,054.

BROMINATION OF UNSATURATED HYDROCARBONS IN MIXED SOLVENTS

... 1449976 Brominated polybutadiene CITIES SERVICE CO 28 Aug 1974 37652/74 Heading C3P [Also in Division C2] A brominated polybutadiene is obtained in Example 6 by brominating liquid 1,2-polybutadiene in the presence of a solvent mixture of t-butanol and heptane.

FLUORINATION OF ORGANIC COMPOUNDS

... 1353519 Fluorination of organic compounds MERCK & CO Inc 26 July 1971 [3 Aug 1970 18 June 1971] 34887/71 Heading C2C [Also in Division C3] Substitutive fluorination of an organic compound containing at least one replaceable hydrogen atom attached to a carbon atom is effected by contacting the organic compound in the liquid or solid state with a C 1-5 fluoroxyperfluoroalkane or fluoroxypentafluorosulphur in the presence of a free-radical initiator, e.g. light, ionizing radiation or a chemical chain initiator, such as an azo compound, e.g. azo-bis-isobutyronitrile. The substrate is preferably dissolved in a solvent inert to the fluorination reaction, e.g. fluorotrichloromethane or similar halogenated alkane or a strong acid such as liquid HF, fluorosulphonic acid, trifluoroacetic acid or sulphuric acid. Substrates include mono- or polynuclear aromatic or alicyclic compounds, alkanes, alkenes, amino acids, fatty acids or their amides and heterocyclic compounds. Many specific examples are given ...

Supported Sheets

... 1,161,614. Laminates. ALLIED CHEMICAL CORP. 13 Sept., 1966 [13 Sept., 1965; 20 June, 1966], No. 40930/66. Heading B5N. [Also in Division C3] Supported sheets may be prepared by laminating to a fabric backing under heat and pressure a sheet of a chlorinated linear polyethylene containing 25 to 55 weight per cent of chlorine and 5 to 30 weight per cent of material showing polyethylene crystallinity as determined by differential thermal analysis, being swollen but not disintegrated by 2 to 24 hours action of trichloroethylene or toluene at 25‹ C., having a glass transition temperature of 5 to 20‹ C., an intrinsic viscosity in o-dichlorobenzene at 100‹ C. of 1 to 3 dl./gm., an ultimate tensile strength of 3000 to 6000 p.s.i., an elongation of 200 to 500 per cent, a 100 per cent stretching modulus of 600 to 1200 p.s.i., a brittle point not above- 65‹ C., a Shore hardness at 15 seconds of 85 to 95, and a thickness decrease at 100‹ C. under 500 gm. load of 5 to 20 per cent by Underwriters Laboratories ...

REMOVAL OF RESIDUAL ACID FROM CHLORINATED POLYMERS

Insoluble polymeric-iodine complexes

Insoluble polymeric iodine complexes are obtained by heating monomers chosen from unsubstituted or substituted N-vinyl -2- pyrrolidones, N-vinyl -2- piperidones, N-vinyl -e - caprolactams, N-vinyl -2- oxazolidones and N-vinyl -3- morpholinones at 40 to 200 DEG C. using as catalyst an alkaline material chosen from alkali metals, alkaline earth metals, and the oxides, hydroxides and alkoxides of these metals, mixing the polymer with iodine and heating to give the complex containing from 0.05 to 25% available iodine. Specified catalysts are sodium hydroxide, sodium methylate, and potassium hydroxide.ALSO:Insoluble polymeric iodine complexes are used as germicides, disinfectants, pesticides, fungicides, deodorants, antiseptics, and bactericides. The complexes are formed by heating the N-vinyl, -pyrrolidones, -piperidones, -e -caprolactams, oxazolidones or -morpholinones in the presence of alkaline materials and heating the so-formed polymer with iodine to give a complex containing 0.05 to 25% ...

Manufacture of chlorinated polyethylenes

Chlorinated polyethylene having rubber-elastic properties is manufactured by admixing uncompacted branched chain polyethylene (e.g. of grain size between 0,1 and 1000m ) with an uncompacted inert solid, the mixture being dispersed in an aqueous medium and chlorinated with gaseous chlorine with the application of a temperature of at least 70 DEG C. before the chlorine content of the product has reached 42%. Specified inert solids are silicic acid, keiselguhr, barium sulphate, asbestos, titanium dioxide, graphite, silicon carbide, glass powder, bleaching earth, carbon black, polyvinyl chloride, polyvinylidine chloride, polychloroprene, polytetrafluoroethylene, polytrifluorochloroethylene, vinyl chloride/vinylidine chloride copolymer, chlorinated polypropylene and chlorinated polyethylene. The process may be effected with the aid of catalysts (including U.V. light), electrolytes and/or emulsifiers. The products are soluble in trifluoroethylene, butyl acetate and toluene. Specification 709,963 ...

Chlorinated polyethylene and film made therefrom

A flexible film of high tensile strength and good low temperature flexibility comprises substantially linear chlorinated polyethylene having a chlorine content of 60 to 75% by weight, an intrinsic viscosity of 0.5 to 3.0 as measured in o-dichlorobenzene at 100 DEG C., and 0% crystallinity, said film being substantially unoriented and substantially free from organic solvent for said chlorinated polyethylene and having a tensile strength of at least 630 kg./cm2. The film may be obtained by chlorinating a linear high density macromolecular polyethylene having a weight average molecular weight of from 1,000,000 to 5,000,000, a crystallinity of at least 75% and a density of from 0.935 to 0.985, said macromolecular polyethylene having been produced by the gas phase polymerization of ethylene below the softening point of the polyethylene and said polyethylene containing dispersed therethrough at least 0.001% by weight of a polymerization catalyst comprising (a) chromium and (b) silica or silica-alumina ...

Improved process for halogenation of synthetic resins

Polymers of at least 75 weight per cent of vinyl chloride are halogenated by reacting a macrogranular vinyl chloride polymer having a specific viscosity of at least 0.40 suspended in an aqueous liquid in the presence of a chlorohydrocarbon swelling agent, illumination and a a catalytic amount of a reducing agent selected from alkali metal sulphites, metabisulphites, bisulphites and hydrosulphites, metal sulphoxylates of C1- 8 aldehydes, C1- 10 aldehydes or dialdehydes, and reducing sugars, at a temperature no greater than 65 DEG C. Specified resins are polyvinyl chloride and copolymers of vinyl chloride with vinylidene chloride, vinyl acetate, isopropenyl acetate, methyl acrylate, ethyl acrylate, 2-ethylhexyl acrylate, styrene, a methyl styrene, ethylene, propylene, methyl methacrylate, ethyl methacrylate, acrylonitrile, maleic esters and fumaric esters. The resins are preferably porous with a pore space of 5 to 50% by volume. Specified swelling agents are mono-, di- and trichloromethane ...

Process for the manufacture of composite structures from rayon textile materials and copolymers of mono-olefines

In the manufacture of rubber articles from saturated amorphous copolymers of ethane and propene or butene (1) satisfactory adhesion of the rayon cord threads or fabrics used for reinforcement is obtained by a process comprising (1) impregnating the rayon cord thread or fabric with an aqueous dispersion containing (a) a reactive di- or polymethylol phenol resin obtained from a phenol and formaldehyde and (b) a partially unsaturated amorphous copolymer optained by reacting a copolymer of ethene and propene or butene (1) with an N-bromodicarboxylic acid imide, e.g. N-bromo-succinimide, or an N-bromo-carboxylic acid amide, (2) embedding the impregnated materials after drying in a vulcanizable mixture of a partially unsaturated amorphous copolymer of the kind described under (1) (b) which also contains sulphur and accelerators, (3) applying to the composite structure a vulcanisable mixture of the saturated amorphous copolymer of ethene and propene or butene-(1) and at least one peroxide, e.g ...

PROCESS FOR THE PRODUCTION OF HYDROLYTICALLY RESISTANT FLUORO CARBONS

... 1440605 Fluorinated hydrocarbon polymers MARCHEM INC H DITTRICH B ANDREAE and R E WAGNER 11 Sept 1973 42691/73 Heading C3P Hydrolysis-resistant fluorinated hydrocarbon polymers are obtained by (a) hydrolysing the fluorinated material with a basic solution, e.g. aqueous NaOH, at a temperature above 50‹ C.; (b) washing the hydrolysed product with water to remove the basic solution; and (c) refluorinating the washed material by contact in an enclosed reaction chamber with gaseous fluorine or a gaseous inorganic fluoride introduced into the atmosphere surrounding said material at a rate not more than that resulting in 6% concentration in said atmosphere at the end of 30 minutes after fluorination has begun, said reaction chamber being maintained throughout at a temperature below the decomposition temperature of said material. The process eliminates easily hydrolysable groups, and may be effected on powders or shaped objects. In one embodiment the initial fluorination of the material prior to ...

Chlorinated Polyethylene and its Production

... 1,167,460. Chlorinated polyethylene. ALLIED CHEMICAL CORP. 5 Aug., 1968, No. 37275/68. Heading C3P. A chlorinated ethylene polymer, obtained from a polymer of density at least 0.9 w. gm./ cm.3 and having an ethylene content of 95- 100% by weight, the remaining 0-5% consisting of propylene or a terminally unsaturated butylene, has a chlorine content of 30-37%, no detectable residual polyethylene crystallinity, an ultimate elongation between 150-500%, and an intrinsic viscosity between 2.5 and 5.5 as measured in o-dichlorobenzene at 100‹ C. The chlorinated polymer may be prepared by subjecting the polymer, of the above specified composition and a molecular weight of 250,000 -700,000, to the action of elemental chlorine in an aqueous slurry first at a temperature below the crystalline melting point of the ethylene polymer and then, while at least the last 6% of chlorine is being introduced into the polymer, at a temperature above the crystalline melting point but not above 150‹ C.

Process for the chlorination of polyvinyl chloride

... 1,128,307. After-chlorinated P.V.C. PRODUITS CHIMIQUES PECHINEY-SAINTGOBAIN. 16 Feb., 1966 [16 Feb., 1965], No. 6807/66. Heading C3P. The chlorination of P.V.C. is effected by swelling the polymer by treatment with the vapours of a chlorinated solvent, suspending in aqueous hydrochloric acid and passing chlorine through the suspension in the presence of ultraviolet light (of wavelength up to 4,500 Š). Chloroform is the preferred solvent and the suspension of swelled polymer is preferably saturated with chlorine before irradiation is commenced. The product may be formed into tubes, sheets, foils, fibres or filaments.

NOVEL ELASTOMERS AND ADHESIVE COMPOSITIONS CONTAINING THEM

... 1,263,484. Chlorinated olefin/acid copolymers; adhesive compositions. E. I. DU PONT DE NEMOURS & CO. 19 June, 1969 [25 June, 1968], No. 31121/69. Heading C3P. Solvent-soluble elastomers comprise a chlorinated copolymer of an -olefin and acrylic acid or an -alkyl derivative thereof having up to 8 carbon atoms, which has a chlorine content of from 15-45% by weight (but excluding chlorinated ethylene-acrylic acid copolymers), the base polymer (i.e. non-chlorinated form) containing from 0À15-0À85 mole per cent of the acid monomer units and having a melt index of 0À1-20. Ethylene is preferred as the -olefin component; propylene is also useful. The substituted acrylic acid may be -ethylacrylic or -propylacrylic acid but methacrylic acid is preferred. The elastomers can be prepared by chlorinating the base polymer, or by copolymerizing the acid monomer with a chloro-olefin such as vinyl chloride. In the example an ethylene-methacrylic acid copolymer is reacted with chlorine in carbon tetrachloride ...

Improvements relating to the chlorination of polymers

Long chain polymers are chlorinated by subjecting them either in solid or liquid form or in solution, suspension or emulsion, to the action of ionising radiation, particularly X-rays, in the presence of chlorine or of a liquid organic aliphatic chlorine compound, which liberates chlorine atoms or chlorine-containing radicals under the influence of the ionising radiation. The polymer may be polystyrene, polyethylene, rubber or a polysiloxane, and the polymer may be irradiated when dissolved or suspended in carbon tetrachloride or in carbon tetrachloride saturated with chlorine. Specification 784,923 is referred to.ALSO:Long chain polymers are chlorinated by subjecting them either in solid or liquid form or in solution, suspension or emulsion, to the action of ionising radiation, particularly X-rays, in the presence of chlorine or of a liquid organic aliphatic chlorine compound which liberates chlorine atoms or chlorine-containing radicals under the influence of the ionising radiation. The ...

Adhesive materials

... 931,953. Coated paper. IMPERIAL CHEMICAL INDUSTRIES Ltd. July 19, 1961 [Aug. 26, 1960], No. 29518/60. Class 140. Paper sheet, suitable for heat-sealing to non-porous surfaces, comprises a sheet of paper coated on one side with a chlorinated polyethylene of M.Wt. 20,000-30,000, having a chlorine content between 40 and 50%. The chlorinated polyethylene is applied either as a solution in an organic solvent or as a dispersion in water and dried. The coating is applied at a dry rate of 20-40 g./m.3.

Halogenation method for polyolefins

Polymers such as polyethylene, polyvinyl chloride, polyacrylonitrile and copolymers of butadiene and styrene are halogenated by being subjected to a halogenating agent while exposed to a field of high energy radiation. The product is both halogenated and cross-linked. Specifications 784,923 and 834,905 are referred to.ALSO:Polymers such as polyethylene, polyvinyl chloride, polyacrylonitrile and copolymers of butadiene and styrene are halogenated by being subject to a halogenating agent while exposed to a field of high-energy radiation. The product is both halogenated and cross-linked. Specifications 784,923 and 834,905 are referred to.

Halogenated and/or sulphohalogenated copolymers of lower olefines and process for their manufacture

Copolymers of unsaturated hydrocarbons of the general formula CH2=CH R where R represents a hydrogen atom or an alkyl group with up to six carbon atoms which have been made by the Ziegler process are halogenated and/sulphohalogenated by reacting them with a halogen and/or a mixture of a halogen and sulphur dioxide. The halogenation or sulphochlorination may be effected in air, e.g. by a whirling layer method, or in an aqueous dispersion medium, or in an organic liquid such as carbon tetrachloride, chloroform, or dichloromethane, and the reaction may be assisted by ultra-violet light. The products may be crosslinked with the aid of a diamine, a polyhydric alcohol, or a metal oxide such as magnesium or lead. The exemplified polymer is a copolymer of ethylene and propylene. Specifications 799,392, 799,823, 801,031, 802,843, 810,023, 810,024, 819,867 and 826,639 are referred to.

Interhalogen adducts of polyvinyl pyrrolidone

Textiles are bleached with an aqueous solution of an adduct of polyvinyl pyrrolidone and iodine monochloride or iodine monobromide (see Group IV (a)). In an example, muslin is bleached. Specifications 680,968 and 726,245, [both in Group VI], are referred to.ALSO:Adducts of polyvinyl pyrrolidone and iodine monochloride or bromide are made by mixing the polymer with the chloride or bromide and heating the mixture at a temperature of from 90 DEG to 95 DEG C. The solid product may be used as a disinfectant, deodorant, bleaching agent, or in the preparation of gelatin silver halide emulsions. Specifications 680,968, [Group VI], and 726,245 are referred to.ALSO:Aqueous solutions of an adduct of polyvinyl pyrrolidone and iodine monochloride or monobromide (see Group IV (a)) are used as disinfectants and deodorants. In an example an adduct of polyvinyl pyrrolidone and iodine monochloride dissolved in water is sprayed into a chamber of one cubic yard in volume which contains 150 p.p.m. of mustard ...

VINYL CHLORIDE POLYMERS AND PREPARATION THEREOF

... 1338039 Chlorinated PVC AIR PRODUCTS & CHEMICALS Inc 20 Dec 1971 [28 Dec 1970] 59148/71 Heading C3P Chlorinated P.V.C. obtained from a homopolymer or a copolymer with 2-15% of ethylene or propylene and optionally up to 10% of other monomer is produced by chlorination in solution in chloroform to result in a product having a chlorine content of at least 67% by wt., a HDT of at least 115‹ C., a heat stability of at least 90 min. at 400‹ F. and a notched Izod impact strength of at least 0À65 ft.lb./inch. When a copolymer is chlorinated it should have an intrinsic viscosity above 0À5 dl./g. Visible or U.V. light is used in the chlorination. In one example a vinyl chloride/propylene/tetrafluoroethylene terpolymer is used.

Fluorophenyl resin compounds.

This invention is directed to a fluorophenyl resin compound, to methods of its preparation; and to its use in the solid phase synthesis of amides, peptides, hydroxamic acids, amines, urethanes, carbonates carbamates, sulfonamides and a-substituted carbonyl compounds.

Fluorophenyl resin compounds

Process of polymer postchloration containing vinyl compounds.

Process for the preparation of postchlorinated polyvinyl chloride with increased thermal resistance.

Fluorophenyl resin compounds.

Method and reagents for the quantification of solid-phase reactions using fluorine NMR.

Fluorophenyl resin compounds

Fluorophenyl resin compounds

VERFAHREN ZUR HERSTELLUNG VON DERIVATEN VON GEGEBENENFALLS HYDRIERTEN BLOCKCOPOLYMEREN

VERFAHREN ZUR HALOGENIERUNG VON ISOMONOOLEFIN/P- ALKYLSTYROL-COPOLYMEREN

IMPROVED BROMINE STYRENE POLYMERS WITH CONTROLLED MOLECULE WEIGHT

ISO-TACTICAL POLYSTYRENE WITH REACTIVE GROUPS

PROCEDURE FOR HALOGENIERUNG OF POLYOLEFINS IN PRESENCE OF OXYGEN

SURFACE-MODIFIED POLYACRYLONITRILSUBSTRATE.

Procedure for the production of chlorinated polyolefin Elastomerer

Process for the chlorination of polyethylenes having a density of more than 0.93

Procedure for chlorinating polyolefins

Procedure for the production of chlorinated polyvinyl chlorides soluble in acetone

Procedure for chlorinating ethylen polymers

Procedure for the chlorination of vinyl chloride Homo and/or - copolymers

Procedure for the improvement of stability of polyolefins

Procedure for the production halogen or at the same time halogen and sulfur of containing polyolefins

LOW VISCOSITY, SEMICRYSTALLINE CHLORINATED POLYETHYLENE RESINS

DERIVATIVE OF AN UNHYDROGENATED OR HYDROGENATED BLOCK COPOLYMER

Brominated butadiene/vinyl aromatic copolymers, blends of such copolymers with a vinyl aromatic polymer, and polymeric foams formed from such blends

Halogenated terpolymers of isobutylene, diolefin monomer and styrenic monomer

Radiopaque polymers for medical devices

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a multifunctional non-iodinated monomer wherein neither of the two monomers is fluorinated. Devices formed from radiopaque polymer compositions are also provided.

CPVC pipe fitting having improved resistance to environmental stress cracking

The disclosed technology relates to a plastic compound suitable for preparing articles, such as pipe fittings and valves, with good physical properties, such as impact strength, and resistance to environmental stress cracking (ESC). In particular, the technology relates to a vinyl chloride resin, which includes chlorinated polyvinyl chloride ("CPVC") homopolymer. Furthermore, the invention relates to vinyl chloride homopolymer compounds containing the vinyl chloride homopolymer resin, and articles made from such compounds, which compounds meet 23447 cell classifications under ASTM D1784.

Method and reagents for the quantification of solid-phase reactions using fluorine NMR

HALOGENATION OF POLYMERS

CHLORINATION OF POLYETHYLENE

ELASTOMERIC COMPOSITIONS

The present invention includes compositions suitable for tire treads or sidewalls and other articles where abrasion resistance and flexibility are desirable. The invention includes a tire tread or sidewall made by combining a filler; a sulfur cure system; optionally at least one secondary rubber; and at least one halogenated terpolymer of C4 to C8 isoolefin derived units, C4 to Cl4 multiolefin derived units, and p-alkylstyrene derived units. Examples of suitable fillers include carbon black, silica, and combinations thereof. The present invention also includes a method of producing an elastomeric terpolymer composition comprising combining in a diluent C4 to C8 isoolefin monomers, C4 to Cl4 multiolefin monomers, and p-alkylstyrene monomers in the presence of a Lewis acid and at least one initiator to produce the terpolymer. Examples of suitable initiators include cumyl compounds and or halogenated organic compounds, especially secondary or tertiary halogenated compounds such as, for example ...

PROCESS FOR THE BROMINATION OF POLYSTYRENES

RECOVERY OF ANTIMONY CATALYST RESIDUES FROM BROMINATION REACTION MIXTURES

A process for brominating a styrenic polymer in an organic solvent in the presence of an antimony trihalide catalyst such that a reaction mass containing brominated styrenic polymer in an organic phase is formed is improved by mixing hydrochloric acid or hydrobromic acid, or both, with said reaction mass at least once to extract antimony catalyst residues from said reaction mass as an acidic aqueous phase. Preferably, catalyst residues are recovered from the acidic aqueous phase and still more preferably, recovered antimony trihalide catalyst residues are recycled to constitute at least a portion of the antimony trihalide catalyst used in preparing the brominated styrenic polymer.

FLUORINE-CONTAINING COMPOUNDS AND POLYMERS DERIVED THEREFROM

An optical device comprising a polymer comprising at least one repeating unit derived from a compound of the following formula: W-Y-O-Z wherein W is hydrogen, X or X-O, X is a monovalent unsaturated organic moiety; Y is a divalent organic moiety; and Z a monovalent fluorinated organic moiety.

SELECTIVE ION EXCHANGE RESINS

A polymeric ion exchange resin of the cross linked type in which the active groups may he constituted either wholly or in part by an imidazole group which is, in turn, attached directly to a crosslinked, polymerized vinyl backbone. The optional substituents on the imidazole ring include optionally substituted pyridyl, imidazoyl or amino groups which can be of substantially known type. A method of preparation of such resins includes the provision of at least the imidazole ring on the vinyl monomer before polymerization thereof. The active groups may be added or modified after polymerization with a cross linking agent.

CHLORINATED ETHYLENE COPOLYMER RESINS

CHLORINATED POLYETHYLENE ELASTOMERS

PROCESS FOR THE RECYCLING OF SOLID PHASE BONDED CTC-RESIN

The present invention relates to a recycling process for the preparation of solid phase bonded 2-chlorotrityl chloride (2-CTC resin) useful for solid phase peptide synthesis. Specifically what is claimed is a process for the preparation of solid phase bonded 2-chlorotrityl chloride (2-CTC resin) of formula I, wherein Ps is a polymeric support and n has the following meaning: 1 >= n> 0 comprising the reaction of solid phase bonded 2-chlorotrityl of formula II, wherein R is OH or/and OC1-4-alkyl or/and NR'R" wherein R' and R" independently of each other represent C1-4-alkyl, or R' and R" together with the nitrogen to which they are bonded represent a 5 to 8 membered heterocyclic radical in the presence of a chlorinating agent and an organic solvent.

AQUEOUS BROMINE EMULSIONS

POLYMERIC CHLORINATION PRODUCTS

IMPROVED BROMINATED POLYSTYRENIC RESINS

Novel brominated styrenic polymers having superior properties rendering them ideally suited for current commercial requirements for use as flame retardants in thermoplastic polymers are described. These properties include such high thermal stabilities in a standard Thermal Stability Test as to dramatically reduce if not eliminate the possibility of corrosion problems due to release of hydrogen halide at elevated polymer processing temperatures. Other special properties of the novel brominated styrenic polymers include, for example, low color or staining properties, and excellent melt flow characteristics.

CHLORINATED ETHYLENE/.ALPHA.-OLEFIN COPOLYMER RUBBER AND COMPOSITION CONTAINING THE SAME

A chlorinated ethylene/.alpha.-olefin copolymer rubber which is a chlorinated product of an ethylene/.alpha.olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40 % by weight, and which has a Mooney viscosity ¢ML1+4(121.degree.C)! of 10 to 190; and a composition comprising the chlorinated ethylene/.alpha.-olefin copolymer rubber, (a) a reinforcing agent, (b) a softening agent, and (c) a vulcanizing agent.

BLOCK COPOLYMER OF POLYALKYLENE AND HALOGENATED POLYSTYRENE

A block copolymer of polyalkylene and halogenated polystyrene comprises the formula: S'-A-(A-S')m in which m is 0, 1, 2, 3 or 4, A is a saturated polyalkylene, and S' is a nuclear brominated polystyrene having from about 0.5 to about 5 bromines per styrene unit. The polystyrene blocks are substantially free of halogen other than bromine and chlorine, and the polyalkylene is substantially free of halogen. The compositions retain the elastomeric properties of the non-halogenated form of the compounds while having significantly reduced flammability.

FLAME RETARDANT BROMINATED STYRENE-BASED POLYMERS

Halogenated styrene-based polymers having surprisingly good physical properties in combination with flame retardancy include copolymers of ring-halogenated, ethylenically unsaturated aromatic monomers and aliphatic conjugated dienes having from 4 to 10 carbon atoms, and terpolymers of ring-halogenated, ethylenically unsaturated aromatic monomers, halogen-free aromatic monomers, and aliphatic conjugated dienes having from 4 to 10 carbon atoms.

Fluorescence quenching based oxygen sensor

A fluorescence quenching based oxygen sensor can be prepared comprising a polystyrene polymer linked to pyrene. The fluorescence based sensor has the formula (I), Polystyrene-Y—R-Pyrene  (I); wherein Y is fluorescence quenching and R is an aliphatic linking group having 1 to 11 carbon atoms. The sensor can be coated onto a support and integrated with an LED excitation source and fluorescence detector.

Novel n-halamine acrylamide monomers and copolymers thereof for biocidal coatings

Novel acrylamide and methacrylamide hydantoin monomers which can be reacted with other acrylamide, methacrylamide, acrylate, and methacrylate monomers to form copolymers, which upon halogenation, provide oxidative coatings which are biocidal for use with various materials including, but not limited to, textiles, filters, and latex paints.

Process for Brominating Butadiene Polymers

Butadiene polymers are brominated using tetraethylammonium tribromide as the brominating agent. The bromination is performed in a solvent for the starting polymer and for the tetraethylammonium bromide that is formed as a reaction byproduct. The process proceeds easily under mild conditions. In some cases, a solution of the brominated polymer and the tetraethylammonium monobromide is produced; this solution separates into a layer that contains the brominated polymer and another layer that contains most or all of the tetraethylammonium monobromide salt. In other cases, the brominated polymer precipitates from the reaction mixture and is separated from the tetraethylammonium monobromide salt in that manner. This process therefore permits the tetraethylammonium monobromide reaction by-product to be separated easily from the brominated product, and allows aqueous washing steps to be reduced or eliminated. 1. A process for forming a brominated butadiene polymer comprising a) reacting a butadiene polymer containing aliphatic carbon-carbon double bonds with tetraethylammonium tribromide , in the presence of at least one solvent for the butadiene polymer and tetraethylammonium monobromide salt , to form a brominated butadiene polymer and tetraethylammonium monobromide salt as a by-product , wherein at least the tetraethylammonium monobromide salt remains dissolved in the solvent , b) selectively separating either the brominated butadiene polymer or the tetraethylammonium monobromide salt from the solvent and c) if necessary , recovering the brominated butadiene polymer from the solvent , wherein the brominated butadiene polymer is prepared and recovered without contacting it with an aqueous phase.2. The process of wherein the solvent is chloroform claim 1 , dichloromethane claim 1 , dibromomethane or bromochloromethane.3. The process of claim 1 , wherein brominated butadiene polymer precipitates from the solvent and is separated from the solvent by a liquid-solid separation ...

Process for Recovering Brominated Styrene-Butadiene from a Bromination Reaction Solution

Brominated styrene-butadiene copolymers are recovered from solutions in a halogenated solvent by an anti-solvent precipitation process. The precipitation process is performed by adding the anti-solvent to the brominated styrene-butadiene copolymer solution. By performing the precipitation using this specific order of addition, a denser product is obtained that is easier to dry. The recovered product shows a reduced tendency to act as a nucleating agent when it is used as a flame retardant additive in an extrusion foaming process. 1. A process for recovering a brominated styrene-butadiene copolymer from solution , comprising adding an antisolvent to a solution of the brominated styrene-butadiene copolymer in at least one halogenated solvent and precipitating the brominated styrene-butadiene copolymer from the solution.2. The process of wherein the brominated styrene-butadiene copolymer solution is obtained by reacting a styrene-butadiene polymer containing aliphatic carbon-carbon double bonds with a quaternary ammonium tribromide or quaternary phosphonium tribromide claim 1 , in the presence of at least one halogenated solvent to form a solution of the brominated styrene-butadiene polymer in the halogenated solvent.3. The process of wherein the brominated styrene-butadiene copolymer solution is prepared by dissolving a brominated styrene-butadiene polymer into a halogenated solvent.4. The process of wherein the halogenated solvent is a polyhalogenated alkane claim 1 , a mono- or polyhalogenated aromatic compound claim 1 , or a mixture of any two or more thereof.5. The process of wherein the halogenated solvent is a polyhalogenated alkane containing 1 or 2 carbon atoms and at least two halogen atoms.6. The process of wherein the polyhalogenated alkane is dichloromethane claim 5 , dibromomethane claim 5 , bromochloromethane claim 5 , chloroform claim 5 , carbon tetrachloride claim 5 , 1 claim 5 ,2-dichloroethane claim 5 , 1 claim 5 ,1-dichloroethane claim 5 , 1 claim 5 ...

Process for Brominating Butadiene Polymers Using Mixed Solvents

Butadiene polymers are brominated using a quaternary ammonium or quaternary phosphonium tribromide as the brominating agent. The bromination is performed in a solvent mixture than contains at least one polyhalogenated alkane and at least one monohalogenated alkane. The process proceeds easily under mild conditions and allows high conversions to be achieved easily. 1. A process for forming a brominated butadiene polymer comprising reacting a butadiene polymer containing aliphatic carbon-carbon double bonds with a quaternary ammonium tribromide or a quaternary phosphonium tribromide , in the presence of a solvent mixture containing at least one polyhalogenated alkane or halogenated aromatic compound in which the brominated butadiene polymer is soluble , and at least one monohalogenated alkane , to form a solution of the brominated butadiene polymer in the solvent mixture and a quaternary ammonium monobromide salt or quaternary phosphonium monobromide salt as a by-product.2. The process of wherein the solvent mixture includes a polyhalogenated alkane that contains from 1 to eight carbon atoms.3. The process of wherein the halogen atoms of the polyhalogenated alkane are chlorine or bromine.4. The process of wherein the polyhalogenated alkane is dichloromethane claim 3 , dibromomethane claim 3 , bromochloromethane claim 3 , chloroform claim 3 , carbon tetrachloride claim 3 , 1 claim 3 ,2-dichloroethane claim 3 , 1 claim 3 ,1-dichloroethane claim 3 , 1 claim 3 ,2-dibromoethane or 1 claim 3 ,1-dibromoethane claim 3 , or a mixture of two or more thereof.5. The process of wherein the monohalogenated alkane contains from 1 to eight carbon atoms.6. The process of wherein the halogen atoms of the monohalogenated alkane are chlorine or bromine.7. The process of wherein the monohalogenated alkane is methyl bromide claim 6 , ethyl bromide or propyl bromide claim 6 , or a mixture of two or more thereof.8. The process of wherein the ratio of the polyhalogenated alkane or halogenated ...

METHOD FOR PRODUCING CHLORINATED HYPERBRANCHED POLYMER

There is provided a novel production method of a chlorinated hyperbranched polymer that is optically stable and is capable of derivatizing the chlorinated hyperbranched polymer into various compounds. A production method of a chlorinated hyperbranched polymer for producing a chlorinated hyperbranched polymer of Formula (1): 2. The production method according to claim 1 , whereinthe step of substituting a dithiocarbamate group of the hyperbranched polymer of Formula (3) having a dithiocarbamate group at a molecular terminal of the hyperbranched polymer with a chlorine atom is performed by charging all at once, continuously, or in fractional amounts, the hyperbranched polymer having a dithiocarbamate group at a molecular terminal of hyperbranched polymer into a solution of sulfuryl chloride in an organic solvent.3. The production method according to claim 1 , whereinthe step of substituting a dithiocarbamate group of the hyperbranched polymer of Formula (3) having a dithiocarbamate group at a molecular terminal of the hyperbranched polymer with a chlorine atom is performed under a condition of a temperature of −20° C. or more and 35° C. or less.4. The production method according to claim 2 , whereinthe step of substituting a dithiocarbamate group of the hyperbranched polymer of Formula (3) having a dithiocarbamate group at a molecular terminal of the hyperbranched polymer with a chlorine atom is performed under a condition of a temperature of −20° C. or more and 35° C. or less. The present invention relates to a novel production method of a chlorinated hyperbranched polymer and more in detail, the present invention relates to a production method capable of producing a chlorinated hyperbranched polymer having stable product quality even in a mass production on an industrial scale.The chlorinated hyperbranched polymer obtained by the present production method is preferably utilized as paints, inks, adhesives, resin fillers, various molding materials, nanometer-sized ...

Hydrohalogenation Of Vinyl-Terminated Macromonomers And Functionalized Derivatives

This invention relates to a polyolefin composition comprising one or more of the following formulae: wherein the PO is the residual portion of a vinyl terminated macromonomer (VTM) having had a terminal unsaturated carbon of an allylic chain and a vinyl carbon adjacent to the terminal unsaturated carbon; X is attached to the terminal portion of the VTM to provide PO—X or at the vinylidene carbon of the VTM to provide PO—CHXCH 3 ; and X is Cl, Br, I, or F.

PROCESS FOR PRODUCING CHLORINATED BUTYL RUBBER

The invention relates to an energy efficient, fast and environmentally favourable process for the preparation of chlorinated butyl rubbers, that uses hypochlorous acid (HOCl) and/or dichlorine monoxide (ClO) as halogenating agent. The process comprises reacting a copolymer with hypochlorous acid and/or dichlorine oxide. The copolymer comprises units derived from an isoolefin monomer and units derived from a multiolefin monomer. A preferred isoolefin is isobutene and a preferred multiolefin is isoprene. 1. A process for the preparation of a chlorinated copolymer comprising at least the step of reacting a copolymer comprisingi) structural units derived from at least one isoolefin monomer andii) structural units derived from at least one multiolefin monomerwith hypochloric acid and or dichlorine oxide.2. The process according to claim 1 , wherein the isoolefin monomer is selected from those having from 4 to 16 carbon atoms.3. The process according to or claim 1 , wherein the isoolefin monomer is isobutene.4. The process according to claim 1 , wherein the multiolefin is selected from the group consisting of isoprene claim 1 , butadiene claim 1 , 2-methylbutadiene claim 1 , 2 claim 1 ,4-dimethylbutadiene claim 1 , piperyline claim 1 , 3-methyl-1 claim 1 ,3-pentadiene claim 1 , 2 claim 1 ,4-hexadiene claim 1 , 2-neopentylbutadiene claim 1 , 2-methyl-1 claim 1 ,5-hexadiene claim 1 , 2 claim 1 ,5-dimethyl-2 claim 1 ,4-hexadiene claim 1 , 2-methyl-1 claim 1 ,4-pentadiene claim 1 , 4-butyl-1 claim 1 ,3-pentadiene claim 1 , 2 claim 1 ,3-dimethyl-1 claim 1 ,3-pentadiene claim 1 , 2 claim 1 ,3-dibutyl-1 claim 1 ,3-pentadiene claim 1 , 2-ethyl-1 claim 1 ,3-pentadiene claim 1 , 2-ethyl-1 claim 1 ,3-butadiene claim 1 , 2-methyl-1 claim 1 ,6-heptadiene claim 1 , cyclopentadiene claim 1 , methylcyclopentadiene claim 1 , cyclohexadiene and 1-vinyl-cyclohexadiene.5. The process according to claim 1 , wherein the multiolefin is isoprene.6. The process according to claim 1 , wherein the ...

MOLDING MATERIAL AND TUBE

A molding material including a melt-fabricable fluororesin and having a metal content of 100 ng/1 g or less as measured by an ashing method. Also disclosed is a tube made of the molding material. 1. A molding material comprising a melt-fabricable fluororesin and having a metal content of 100 ng/1 g or less as measured by an ashing method ,wherein the fluororesin is at least one selected from the group consisting of a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer and a tetrafluoroethylene/hexafluoropropylene copolymer.2. The molding material according to claim 1 , wherein the fluororesin has a melt flow rate of 1 to 6 g/10 min.3. The molding material according to claim 1 , wherein the metal content of the molding material is 40 ng/1 g or less as measured by the ashing method.4. The molding material according to claim 1 , which is a pellet.5. The molding material according to claim 1 , wherein the fluororesin is a fluororesin subjected to fluorination treatment.6. A tube made of the molding material according to . The present disclosure relates to a molding material and a tube.Patent Document 1 suggests a molding material consisting of a fluorine-containing copolymer, which has a metal elution index η of at most 10 (where the metal elution index η is the total amount in nanogram of specific metal components eluted per 1 g of the fluorine-containing copolymer, as defined in the description), as a molding material that can provide a molded article with less color by melt-molding.Patent Document 1: JP2000-1518AFluororesins are used as a molding material of, for example, a tube for transferring a chemical liquid for use in production of semiconductor devices. With micronization of semiconductor devices of late years, these is a need for a technique for reducing an adverse influence of metal components in a molding material containing a fluororesin to an unprecedented level.The object of the present disclosure is to provide a molding material containing a ...

CHLORINATED POLYOLEFIN RESIN AND USE THEREOF

An object is to provide a chlorinated polyolefin resin that has excellent solution stability and excellent adhesion to polyolefin substrates including a polyethylene substrate. The chlorinated polyolefin resin is a chlorinated product of a copolymer having a structural unit derived from ethylene, in which a content ratio of the ethylene structural unit in the copolymer is 50 mol % to 90 mol %. 1. A chlorinated polyolefin resin ,wherein the chlorinated polyolefin resin is a chlorinated product of a copolymer comprising a structural unit derived from ethylene, anda content ratio of the ethylene structural unit in the copolymer is 50 mol % to 90 mol %.2. The chlorinated polyolefin resin according to claim 1 , wherein the chlorinated polyolefin resin has a chlorine content ratio of 10% to 40%.3. The chlorinated polyolefin resin according to claim 1 ,wherein the copolymer comprises at least one structural unit selected from the group consisting of a structural unit derived from octene, a structural unit derived from butene, a structural unit derived from propylene, a structural unit derived from pentene, a structural unit derived from hexene, a structural unit derived from heptene, a structural unit derived from styrene, a structural unit derived from cyclopentene, and a structural unit derived from norbornene.4. The chlorinated polyolefin resin according to claim 1 ,wherein the chlorinated polyolefin resin has a weight average molecular weight of 3,000 to 250,000.5. The chlorinated polyolefin resin according to claim 1 , wherein the copolymer has a melting point (Tm) of 40° C. to 140° C.6. The chlorinated polyolefin resin according to claim 1 , wherein the chlorinated polyolefin resin has a softening point of 15° C. to 100° C.7. A primer composition comprising the chlorinated polyolefin resin according to .8. A paint composition comprising the chlorinated polyolefin resin according to .9. An ink composition comprising the chlorinated polyolefin resin according to .10. ...

OPTICAL COMPENSATION FILMS BASED ON STYRENIC FLUOROPOLYMER

Disclosed are optical compensation films with exceptionally high positive out-of-plane birefringence. The optical compensation films are based on substituted styrenic fluoropolymers and have positive out-of-plane bireftingence greater than 0.02 throughout the wavelength range of 400 nm<λ<800 nm. The optical compensation films of the invention are suitable for use in optical devices such as liquid crystal display (LCD) devices and organic light emitting diode (OLED) display devices. 2. The optical compensation film composition of claim 1 , wherein at least two of R claim 1 , R claim 1 , and Rare fluorine atoms.3. The optical compensation film composition of claim 1 , wherein le and Rare fluorine atoms.4. The optical compensation film composition of claim 1 , wherein the substituent R is selected from the group consisting of fluoro claim 1 , chloro claim 1 , bromo claim 1 , iodo claim 1 , nitro claim 1 , phenyl claim 1 , cyano claim 1 , trifluoromethyl claim 1 , and combinations thereof.5. The optical compensation film composition of claim 1 , wherein the substituent R is nitro.6. The optical compensation film composition of claim 1 , wherein the polymer film has a positive birefringence greater than 0 claim 1 ,023 throughout the wavelength range of 400 nm<λ<800 nm.7. The optical compensation film composition of claim 1 , wherein the polymer film has a positive birefringence greater than 0.025 throughout the wavelength range of 400 nm<λ<800 nm.8. The optical compensation film composition of claim 1 , wherein the polymer film has a positive birefringence greater than 0.027 throughout the wavelength range of 400 nm<λ<800 nm.9. The optical compensation film composition of claim 1 , wherein the polymer film has a positive birefringence greater than 0.03 throughout the wavelength range of 400 nm<λ<800 nm.10. The optical compensation film composition of claim 1 , wherein the polymer film has a positive birefringence greater than 0.022 and the substituent R on the styrenic ...

Method For Preparing Polyolefin Using Supported Hybrid Metallocene Catalyst

The present disclosure relates to a method for preparing a polyolefin using a supported hybrid metallocene catalyst. According to the present disclosure, a polyolefin having a narrow molecular weight distribution can be prepared very effectively by introducing a cocatalyst in an optimum conent in the presence of a supported hybrid metallocene catalyst containing two or more metallocene compounds having a specific chemical structure. The polyolefin prepared according to the present disclosure exhibits excellent uniformity in chlorine distribution in polyolefin during chlorination, thereby significantly improving elongation of the chlorinated polyolefin, compatibility with PVC and impact reinforcing performance. Thus, it exhibits excellent chemical resistance, weather resistance, flame retardancy, processability and impact strength reinforcing effect, and can be suitably applied as an impact reinforcing agent for PVC pipes and window profiles.

RADIOPAQUE POLYMERS FOR MEDICAL DEVICES

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a multifunctional non-iodinated monomer wherein neither of the two monomers is fluorinated. Devices formed from radiopaque polymer compositions are also provided. 4. The polymer composition of claim 1 , wherein the amount of the first repeating unit in the polymer composition is from 15 to 35 wt %.5. The polymer composition of claim 1 , wherein the amount of the second repeating unit in the polymer composition is from 65 to 85 wt %.10. The polymer composition of claim 7 , wherein the amount of the first monomer is from 15 to 35 wt % of the monomer mixture.15. The method of claim 12 , wherein the amount of the first monomer is from 15 to 35 wt % of the monomer mixture.1728. The method of claim 16 , wherein the amount of the first monomer is from 15 to 35 wt %. and the combined amount of the second monomer and the monomer of claim is from 85 to 65 wt % of the monomer mixture. This application is a continuation of U.S. patent application Ser. No. 15/706,560, filed Sep. 15, 2017, which is a continuation of U.S. patent application Ser. No. 14/766,626, with a § 371(c) date of Aug. 7, 2015, now U.S. Pat. No. 9,789,231, which is a U.S. National Stage Application under 35 U.S.C. § 371 of International Application No. PCT/US2014/015250, filed Feb. 7, 2014, which claims the benefit of U.S. Provisional Application No. 61/762,416, filed Feb. 8, 2013, each of which are hereby incorporated by reference in their entirety.Shape memory materials are defined by their capacity to recover a predetermined shape after significant mechanical deformation (K. Otsuka and C. M. Wayman, “Shape Memory Materials” New York: Cambridge University Press, 1998). The shape memory effect ...

System and Process for Halogenating Olefinic-Derived Elastomers in the Bulk Phase

A system for halogenating olefinic-based elastomer, the system comprising a first extruder, a first kneader vessel downstream of said first extruder and in fluid communication with said first extruder, a second extruder downstream of said first kneader vessel and in fluid communication with said first kneader vessel, a second kneader vessel downstream of said second extruder and in fluid communication with said second extruder; and a third extruder downstream of said second kneader vessel and in fluid communication with said second kneader vessel. 1. A system for halogenating olefinic-based elastomer , the system comprising:(i) a first extruder;(ii) a first kneader vessel downstream of said first extruder and in fluid communication with said first extruder;(iii) a second extruder downstream of said first kneader vessel and in fluid communication with said first kneader vessel;(iv) a second kneader vessel downstream of said second extruder and in fluid communication with said second extruder; and(v) a third extruder downstream of said second kneader vessel and in fluid communication with said second kneader vessel.2. The system of claim 1 , where said first extruder is a screw extruder adapted to compact and heat olefinic-based elastomer.3. The system of claim 1 , where said first kneader vessel is a sealed vessel that is adapted to maintain gaseous reactants that are introduced into said kneader vessel.4. The system of claim 1 , where said first kneader vessel in fluid communication with a gas loop adapted to introduce gaseous reactants into said kneader vessel and remove gaseous by-products from said kneader vessel.5. The system of claim 4 , where said gas loop includes reactors for the neutralization of said gaseous by-products or the regeneration of gaseous reactants from said gaseous by-products.6. The system of claim 1 , where said first kneader vessel is adapted to deform and expose unreacted surface area of olefinic-based elastomer within said first kneader ...

Method and Apparatus for Using Iodinated Polymer as an Antimicrobial Agent to Manage the Suppression and Disinfection of Pathogens

Disclosed is a method and apparatus for using iodinated polymer as an antimicrobial agent to manage the suppression and disinfection of pathogens.

METHODS OF PREPARING FUNCTIONALIZED POLYOLEFINS

Provided herein are methods for preparing a functionalized polyolefin from an unsaturated polyolefin containing one or more non-aromatic main-chain double bonds and for reducing the size and/or polydispersity index (i.e., increasing the homogeneity) of the unsaturated polyolefin. 1. A method for preparing a functionalized polyolefin , comprising contacting an unsaturated polyolefin containing one or more non-aromatic main-chain double bonds with an aromatic compound in the presence of a Lewis acid and protic acid to form the functionalized polyolefin.2. The method of claim 1 , wherein the functionalized polyolefin has a weight average molecular weight or number average molecular weight smaller than that of the unsaturated polyolefin.3. The method of claim 1 , wherein the molar ratio of the aromatic compound relative to the number of non-aromatic main-chain double bonds in the unsaturated polyolefin is ranging from about 1 to about 5.4. The method of claim 1 , wherein the aromatic compound is a substituted benzene.6. The method of claim 1 , wherein the aromatic compound is anisole claim 1 , isopropoxybenzene claim 1 , 2-bromoethoxybenzene claim 1 , or 3-bromopropoxybenzene.7. The method of claim 1 , wherein the Lewis acid is a titanium tetrahalide claim 1 , a boron trihalide claim 1 , an aluminum trihalide claim 1 , a tin tetrahalide claim 1 , a zinc halide claim 1 , ethyl aluminum dichloride claim 1 , or a mixture thereof.8. The method of claim 1 , wherein the protic acid is formed in situ.9. The method of claim 1 , wherein the method is performed at a temperature ranging from about −120° C. to about 50° C.10. The method of claim 1 , wherein the method is performed in a solvent.11. The method of claim 10 , wherein the solvent is a hydrocarbon claim 10 , a halogenated hydrocarbon claim 10 , or a mixture thereof.12. The method of claim 1 , wherein the unsaturated polyolefin is a copolymer of an olefin and a comonomer.13. The method of claim 12 , wherein the olefin is ...

Polyethylene and Its Chlorinated Polyethylene

The present disclosure relates to a polyethylene, which is reacted with chlorine to prepare a chlorinated polyethylene having excellent chlorination productivity and thermal stability by enabling an increase in chlorination temperature, and facilitating deoxidation, dehydration and drying processes during chlorination processing, by implementing an enlarged area of the middle and high molecular weight regions in the molecular structure of the polyethylene. 1. A polyethylene , having:{'sub': '5', 'a MI(a melt index measured at 190° C. under a load of 5 kg) of 0.55 g/10 min or less,'}{'sub': '21.6', 'a MI(a melt index measured at 190° C. under a load of 21.6 kg) of 6 g/10 min or less,'}a complex viscosity (η*(ω0.05)) of 68000 Pa·s or more, measured at a frequency (ω) of 0.05 rad/s, anda complex viscosity (η*(ω500)) of 900 Pa·s to 1600 Pa·s, measured at a frequency (ω) of 500 rad/s.2. The polyethylene of claim 1 , wherein the polyethylene is an ethylene homopolymer.3. The polyethylene of claim 1 , wherein the MI(a melt index measured at 190° C. under a load of 5 kg) is 0.1 g/10 min to 0.55 g/10 min.4. The polyethylene of claim 1 , wherein the MI(a melt index measured at 190° C. under a load of 21.6 kg) is 2.2 g/10 min to 6 g/10 min.5. The polyethylene of claim 1 , which has a melt flow rate ratio (MFRR claim 1 , a value obtained by dividing the melt index measured at 190° C. under a load of 21.6 kg by the melt index measured at 190° C. under a load of 5 kg in accordance with ASTM D 1238) of 10 to 18.6. The polyethylene of claim 1 , wherein the complex viscosity (η*(ω0.05)) is 68000 Pa·s to 180000 Pa·s claim 1 , measured at a frequency (ω) of 0.05 rad/s.7. The polyethylene of claim 1 , which has a density of 0.947 g/cmor more.11. The method for preparing the polyethylene according to claim 8 , wherein Rand Rare each independently Calkylsilyl claim 8 , or Csilylalkyl.12. The method for preparing the polyethylene according to claim 8 , wherein the polymerization is ...

RADIOPAQUE POLYMERS FOR MEDICAL DEVICES

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a multifunctional non-iodinated monomer wherein neither of the two monomers is fluorinated. Devices formed from radiopaque polymer compositions are also provided. 2) (canceled)3) (canceled)4) The polymer composition of claim 1 , wherein Aris Caryl substituted with three I atoms claim 1 , and wherein Rand Rare independently C-Calkylene.5) (canceled)6) (canceled)7) (canceled)8) (canceled)9) The polymer composition of claim 1 , wherein the amount of the first repeating unit in the polymer composition is from 40-80 wt %.10) The polymer composition of claim 9 , wherein the amount of the second repeating unit in the polymer composition is at most 40 wt % of the composition.11) (canceled)12) (canceled)13) (canceled)14) (canceled)15) (canceled)16) (canceled)17) (canceled)19) (canceled)20) (canceled)21) The polymer composition of claim 18 , wherein Aris Caryl substituted with three I atoms claim 18 , and wherein Rand Rare independently C-Calkylene.22) (canceled)23) (canceled)24) (canceled)25) (canceled)26) The polymer composition of claim 18 , wherein the amount of the first monomer is from 40-80 wt % of the monomer mixture.27) (canceled)28) (canceled)29) (canceled)30) (canceled)31) (canceled)32) (canceled)34) (canceled)35) (canceled)36) (canceled)37) (canceled)38) (canceled)39) (canceled)40) (canceled)41) The method of claim 33 , wherein Aris Caryl substituted with three I atoms claim 33 , and wherein Rand Rare independently C-Calkylene.42) (canceled)43) (canceled)44) (canceled)45) (canceled)46) The method of claim 33 , wherein the amount of the first monomer is from 40-80 wt % of the monomer mixture.47) (canceled)48) (canceled)49) (canceled)50) The method of ...

HIGH-STRENGTH LOW-CREEP THERMOPLASTIC ELASTOMER

A polystyrene-g-(polyisobutylene-b-polystyrene) is taught. The polystyrene-g-(polyisobutylene-b-polystyrene) is synthesized by first providing a polystyrene backbone. Once the polystyrene backbone is provided, the polystyrene backbone is acetylated to provide acetyl groups on the polystyrene backbone. Next, the acetyl groups are converted to —C(CH)OH groups. Finally, the living polymerization of isobutylene is initiated, which is then followed by the living block polymerization of styrene. A polymer network of polystyrene-g-(polyisobutylene-b-polystyrene)s is also provided. 1. A polystyrene-g-(polyisobutylene-b-polystyrene).2. The polystyrene-g-(polyisobutylene-b-polystyrene) of having a tensile strength of greater than 20 MPa.3. The polystyrene-g-(polyisobutylene-b-polystyrene) of having an elongation of greater than 400%.4. A method of synthesizing a polystyrene-g-(polyisobutylene-b-polystyrene) comprising the steps of:providing a polystyrene backbone;acetylating the polystyrene backbone to provide between about 2 and about 20 acetyl groups on the polystyrene backbone;converting the acetyl groups to —C(CH3)2OH groups; andinitiating in the presence of a co-initiator the living block polymerizations of isobutylene followed by styrene.5. The method of claim 4 , wherein the step of acetylating provides between 4 and 7 acetyl groups on the polystyrene backbone.6. The method of claim 4 , wherein the step of acetylating provides 5 or 6 acetyl groups on the polystyrene backbone.7. The method of claim 4 , wherein prior to the step of initiating claim 4 , the —C(CH3)2OH groups are converted to —C(CH3)2Cl groups.8. The method of claim 7 , wherein the step of converting the —C(CH3)2OH groups to —C(CH3)2Cl groups uses hydrogen chloride to convert the —C(CH3)2OH groups to —C(CH3)2Cl groups.9. The method of claim 4 , wherein prior to the step of initiating claim 4 , the —C(CH3)2OH groups are converted to —C(CH3)2OMe groups.10. The method of claim 9 , wherein the step of ...

PVDF-TrFE Co-Polymer Having Improved Ferroelectric Properties, Methods of Making a PVDF-TrFE Co-Polymer Having Improved Ferroelectric Properties and Methods of Changing the End Group of a PVDF-TrFE Co-Polymer

A method of exchanging or transforming end groups in and/or improving the ferroelectric properties of a PVDF-TrFE co-polymer is disclosed. A bulky or chemically dissimilar end group, such as an iodine, sulfate, aldehyde or carboxylic acid end group, may be transformed to a hydrogen, fluorine or chlorine atom. A method of making a PVDF-TrFE co-polymer is disclosed, including polymerizing a mixture of VDF and TrFE using an initiator, and transforming a bulky or chemically dissimilar end group to a hydrogen, fluorine or chlorine atom. A PVDF-TrFE co-polymer or other fluorinated alkene polymer is also disclosed. The co-polymer may be used as a ferroelectric, electromechanical, piezoelectric or dielectric material in an electronic device. 1. A method of forming an electronic device , comprising depositing a PVDF-TrFE co-polymer on a substrate as a ferroelectric , electromechanical , piezoelectric or dielectric material in the electronic device , wherein the PVDF-TrFE co-polymer has an end group selected from H , F and Cl.2. The method of claim 1 , wherein the PVDF-TrFE co-polymer has a formula X—(CHF)—(CHF)—X claim 1 , where Xis R claim 1 , H claim 1 , F or Cl claim 1 , R is a C-alkyl group that may contain from 1 to 2n+1 fluorine atoms claim 1 , Xis independently H claim 1 , F or Cl claim 1 , n is an integer of 1 to 6 claim 1 , p and q are integers of 2 or more claim 1 , and p+q>2000.3. The method of claim 2 , wherein the electronic device is a memory cell.4. The method of claim 1 , further comprising claim 1 , prior to depositing the PVDF-TrFE co-polymer on the substrate claim 1 , exchanging an iodine or hydroxyl end group on the PVDF-TrFE co-polymer with the end group selected from H claim 1 , F and Cl.5. The method of claim 4 , wherein the iodine or hydroxyl end group on PVDF-TrFE copolymer is the iodine end group claim 4 , the iodine end group is exchanged with the hydrogen end group claim 4 , and exchanging the iodine end group with the hydrogen end group comprises ...

ULTRAPURE COPOLYMERS

The invention relates to a method to reduce or prevent agglomeration of particles of optionally halogenated rubbers in aqueous media by LCST compounds, their purification as well as ultrapure optionally halogenated rubbers. The invention further relates to (halogenated) copolymer products comprising the same or derived therefrom. 1. A process for the preparation of a pure copolymer , the process comprising: i) at least one copolymer comprising a first fraction of cyclic copolymers having a molecular weight of 2000 g/mol or less, wherein the at least one copolymer is optionally hydrogenated, and', 'ii) an organic diluent', a retentate and an organic diluent, wherein the retentate comprises at least one copolymer comprising a second fraction of the cyclic copolymers having a molecular weight of 2000 g/mol or less, wherein the second fraction is lower than the first fraction, and', 'a permeate and an organic diluent, wherein the permeate comprises an additional fraction of cyclic copolymers having a molecular weight of 2000 g/mol or less and an organic diluent, and, 'through a semipermeable ultrafiltration membrane to produce'}], 'A) filtering a first organic medium comprising i) the copolymer of, or obtained from the retentate, and', 'ii) an organic diluent', 'with an aqueous medium comprising at least one LCST compound having a cloud point of 0 to 100° C., and, 'B) contacting a second organic medium comprisingremoving at least partially the organic diluent to obtain the pure copolymer.2. The process according to claim 1 , wherein the aqueous medium further contains non-LCST compounds claim 1 , whereby the non-LCST compounds areselected from the group consisting of ionic or non-ionic surfactants, emulsifiers, and antiagglomerantssalts of (mono- or multivalent) metal ionscarboxylic acid salts of multivalent metal ionsstearates or palmitates of mono- or multivalent metal ions, orcalcium and zinc stearates or palmitates.3. The process according to claim 2 , wherein the ...

Process for the production of water and solvent-free halobutyl rubbers

The present invention relates to water and solvent-free halogenated butyl rubber products as well as a process for the production thereof.

METHODS OF FORMING A POLYMER LAYER ON A POLYMER SURFACE

Methods of forming polymer layers on polymer surfaces using surface initiated atom-transfer radical-polymerization (ATRP) are described. The method can include functionalization steps prior to performing surface initiated ATRP, such as hydroxylation steps and/or halogenation steps. The hydroxylation step can be carried out in a solution including potassium persulfate, ammonium persulfate, or lithium hydroxide. The halogenation step can also be carried out in a solution. The methods described herein can be performed on bundles of hollow polymer fibers, including bundles of hollow polymer fibers mounted in a module. 1. A method of forming a polymer film on a polymer surface , the method comprising the steps of:(a) hydroxylating the polymer surface in a hydroxylation solution;(b) halogenating the polymer surface;(c) performing surface initiated atom-transfer radical-polymerization on the polymer surface, wherein the surface initiated atom-transfer radical polymerization forms a polymer film on the polymer surface.2. The method of claim 1 , wherein the hydroxylation solution comprises potassium persulfate claim 1 , ammonium persulfate claim 1 , lithium hydroxide claim 1 , or combinations thereof;wherein the polymer surface is a fluorinated polymer when the hydroxylation solution comprises lithium hydroxide,3. The method of claim 2 , wherein the hydroxylation solution further comprises water.4. The method of claim 1 , wherein the polymer surface comprises a bundle of polymer fibers.5. The method of claim 4 , further comprising the step of mounting the bundle of polymer fibers in a module prior to performing step (a).6. The method of claim 5 , wherein the bundle of polymer fibers comprises a bundle of hollow polymer fibers and the bundle of hollow polymer fibers is mounted in the module such that only the exterior surface of the hollow polymer fibers is exposed to the hydroxylation solution.7. The method of claim 5 , wherein the bundle of polymer fibers comprises a bundle ...

METHOD FOR MODIFYING UNSATURATED HYDROCARBON RESIN

A method for modifying a resin which comprises the reaction of an unsaturated resin consisting of more than 95% by mass of carbon and hydrogen atoms with a hypohalogenous compound in at least one solvent in the presence of a hydroxylated compound. This method results in the synthesis of new resins having oxygenated and halogenated functions. 1. A method for modifying a resin , which comprises reaction of an unsaturated resin having more than 95 wt % of carbon and hydrogen atoms with a hypohalogenous compound in at least one solvent in the presence of a hydroxylated compound.2. The method according to claim 1 , wherein the unsaturated resin has a number-average molecular weight in a range from 400 to 2000 g/mol and a glass transition temperature above 20° C.3. The method according to claim 1 , wherein the unsaturated resin has more than 99 wt % of carbon and hydrogen atoms.4. The method according to claim 3 , wherein the unsaturated resin is a polylimonene resin.5. The method according to claim 3 , wherein the unsaturated resin is a resin based on a C5 cut.6. The method according to claim 1 , wherein the hypohalogenous compound is a hypohalogenous acid or an ester of hypohalogenous acid.7. The method according to claim 1 , wherein the hypohalogenous compound is a hypochlorous compound.8. The method according to claim 1 , wherein the hydroxylated compound is an alcohol.9. The method according to claim 1 , wherein the hydroxylated compound is water or a mixture thereof with an alcohol.10. The method according to claim 8 , wherein the alcohol is methanol.11. The method according to claim 1 , wherein the method comprises reaction of an N-haloamide-(C═O)-N(X) with the hydroxylated compound to synthesize the hypohalogenous compound.12. The method according to claim 11 , wherein the N-haloamide is trichloroisocyanuric acid.13. The method according to claim 1 , wherein the reaction takes place in a reaction mixture whose liquid phase consists of a single phase.14. A modified ...

METHODS FOR PROVIDING POLYVINYL CHLORIDE PARTICLES FOR PREPARING CHLORINATED POLYVINYL CHLORIDE

A method for providing particles of polyvinyl chloride, wherein the particles offer improved chlorinating efficiency, the method comprising (i) providing polyvinyl chloride particles; and (ii) introducing a chlorination accelerant to the polyvinyl chloride particles to thereby provide polyvinyl chloride particles having an accelerant associated therewith. 1. A method for providing particles of polyvinyl chloride , wherein the particles offer improved chlorinating efficiency , the method comprising:i. providing polyvinyl chloride particles; andii. introducing a chlorination accelerant to the polyvinyl chloride particles to thereby provide polyvinyl chloride particles having an accelerant associated therewith.2. The method of the preceding claim , where said step of providing polyvinyl chloride includes providing a dispersion of polyvinyl chloride particles wherein the polyvinyl chloride particles are dispersed in water , and where said step of introducing a chlorination accelerant includes adding the chlorination accelerant to the dispersion to thereby associate the chlorinating accelerant with the polyvinyl chloride particles and provide polyvinyl chloride particles having an accelerant associated therewith.3. The method of claim 2 , further comprising the step of separating the polyvinyl chloride particles having an accelerant associated therewith from the water.4. The method of claim 3 , where said step of separating includes drying the particles.5. The method of claim 4 , where said step of introducing a chlorination accelerant to the polyvinyl chloride particles takes place prior to said step of separating the polyvinyl chloride particles having an accelerant associated therewith from the water.6. The method of claim 5 , where said step of introducing a chlorination accelerant to the polyvinyl chloride particles takes place after said a step of centrifuging and prior to said step of drying.7. The method of claim 1 , where the polyvinyl chloride particles having ...

Catalyst Composition, Method of Preparing the Composition, Method of Preparing Conjugated Diene-Based Polymer By Using the Composition, and Conjugated Diene-Based Polymer Prepared by the Method of Preparing the Polymer

A catalyst composition capable of forming a conjugated diene-based polymer having a narrow molecular weight distribution by being used in polymerization of a conjugated diene-based monomer, a method of preparing the same, a method of preparing a conjugated diene-based polymer using the catalyst composition, and a conjugated diene-based polymer prepared by the method of preparing the polymer are provided. Since the catalyst composition according to the present invention includes a polymer having a number-average molecular weight of 3,000 g/mol to 10,000 g/mol and including a conjugated diene-based monomer-derived unit, the catalyst composition may be used in the polymerization of a conjugated diene-based monomer to prepare a conjugated diene-based polymer having a narrower molecular weight distribution in comparison to a conventional neodymium catalyst composition.

Polyethylene and Chlorinated Polyethylene Thereof

The polyethylene according to the present invention has narrow particle size distribution, and can minimize a change in the crystal structure, and thus, it can be reacted with chlorine to prepare chlorinated polyethylene having excellent chlorination productivity and thermal stability. 1. Polyethylene having a molecular weight distribution (Mw/Mn) of 2 to 10 ,a tie molecule fraction of 3% or more,a crystal structure transition temperature of 108° C. or more, andan endothermic initiation temperature of 125° C. or more.2. The polyethylene according to claim 1 , wherein the polyethylene is ethylene homopolymer.3. The polyethylene according to claim 1 , wherein the polyethylene has a weight average molecular weight of 50000 g/mol to 250000 g/mol.4. The polyethylene according to claim 1 , wherein the polyethylene has a crystallinity of 55% or more.5. The polyethylene according to claim 1 , wherein the polyethylene has a melting temperature of 130° C. or more.6. The polyethylene according to claim 1 , wherein the polyethylene has a density of 0.940 g/cmor more.7. The polyethylene according to claim 1 , which has a melt index of 0.1 g/10 min to 10 g/10 min measured under temperature of 230° C. and load of 5 kg according to ASTM D1238.9. Chlorinated polyethylene prepared by reacting the polyethylene according to with chlorine.10. The polyethylene according to claim 1 , wherein the tie molecule fraction is about 6.0% % or less.11. The polyethylene according to claim 1 , wherein the crystal structure transition temperature is about 132° C. or less.12. The polyethylene according to claim 1 , wherein the endothermic initiation temperature is about 134° C. or less.17. The polyethylene according to claim 8 , wherein the metallocene catalyst comprises at least one first compound represented by the Chemical Formula 1 claim 8 , and at least one second compound represented by the Chemical Formulas 2 claim 8 , 3 or 4.18. The polyethylene according to claim 8 , wherein hydrogen gas is ...

Polymeric hybrid particle containing nano particles and uses

A polymeric hybrid particle or composition comprising of polymers, such as polystyrene or methylated polystyrenes with cyclic amines and their halogenated forms, and nanoparticles (NPs). The method for the preparation thereof and uses as nano-adsorbent, or a biocide, or a dual function combination of biocide and adsorbent for use in a fluid system for the purpose of purification or remediation are also disclosed.

METHODS OF FORMING A POLYMER LAYER ON A POLYMER SURFACE

Methods of forming polymer layers on polymer surfaces using surface initiated atom-transfer radical-polymerization (ATRP) are described. The method can include functionalization steps prior to performing surface initiated ATRP, such as hydroxylation steps and/or halogenation steps. The hydroxylation step can be carried out in a solution including potassium persulfate, ammonium persulfate, or lithium hydroxide. The halogenation step can also be carried out in a solution. The methods described herein can be performed on bundles of hollow polymer fibers, including bundles of hollow polymer fibers mounted in a module. 1. A method of forming a polymer film on a polymer surface , the method comprising the steps of:(a) hydroxylating the polymer surface in a hydroxylation solution;(b) halogenating the polymer surface;(c) performing surface initiated atom-transfer radical-polymerization on the polymer surface, wherein the surface initiated atom-transfer radical polymerization forms a polymer film on the polymer surface.2. The method of claim 1 , wherein the hydroxylation solution comprises potassium persulfate claim 1 , ammonium persulfate claim 1 , lithium hydroxide claim 1 , or combinations thereof;wherein the polymer surface is a fluorinated polymer when the hydroxylation solution comprises lithium hydroxide,3. The method of claim 2 , wherein the hydroxylation solution further comprises water.4. The method of claim 1 , wherein the polymer surface comprises a bundle of polymer fibers.5. The method of claim 4 , further comprising the step of mounting the bundle of polymer fibers in a module prior to performing step (a).6. The method of claim 5 , wherein the bundle of polymer fibers comprises a bundle of hollow polymer fibers and the bundle of hollow polymer fibers is mounted in the module such that only the exterior surface of the hollow polymer fibers is exposed to the hydroxylation solution.7. The method of claim 5 , wherein the bundle of polymer fibers comprises a bundle ...

Azidated copolymers and processes for preparing same

The present invention relates to functionalized copolymers of isoolefins and olefinic monomers, particularly to azidated copolymers. The present invention also relates to methods of preparing such azidated copolymers. The functionalized copolymers are used in various technology areas such as surface modification, adhesion, drug delivery, compatibilization of polymer blends or motor oil and fuel additives, and in providing clean cured products without contaminant leaching and/or side products.

Aqueous hydrogen peroxide purification method and purification system

A purification method for an aqueous hydrogen peroxide solution includes subjecting the aqueous hydrogen peroxide solution to a reverse osmosis membrane separation treatment with a high-pressure reverse osmosis membrane separation device. The high-pressure reverse osmosis membrane has a denser skin layer on the membrane surface and is therefore lower in an amount of membrane permeate water per unit operating pressure but higher in the rejection rate of TOC and boron, as compared with a low-pressure or ultralow-pressure reverse osmosis membrane. The high-pressure reverse osmosis membrane permeate water is preferably further subjected to an ion exchange treatment with an ion exchange device including two or more columns packed with gel-type strong ion exchange resins.

PVDF-TrFE Co-Polymer Having Improved Ferroelectric Properties, Methods of Making a PVDF-TrFE Co-Polymer Having Improved Ferroelectric Properties and Methods of Changing the End Group of a PVDF-TrFE Co-Polymer

A method of exchanging or transforming end groups in and/or improving the ferroelectric properties of a PVDF-TrFE co-polymer is disclosed. A bulky or chemically dissimilar end group, such as an iodine, sulfate, aldehyde or carboxylic acid end group, may be transformed to a hydrogen, fluorine or chlorine atom. A method of making a PVDF-TrFE co-polymer is disclosed, including polymerizing a mixture of VDF and TrFE using an initiator, and transforming a bulky or chemically dissimilar end group to a hydrogen, fluorine or chlorine atom. A PVDF-TrFE co-polymer or other fluorinated alkene polymer is also disclosed. The co-polymer may be used as a ferroelectric, electromechanical, piezoelectric or dielectric material in an electronic device. 1. A PVDF-TrFE co-polymer comprising a plurality of vinylidene fluoride units , a plurality of trifluoroethylene units , and end groups or substituents selected from H , F and Cl.2. The PVDF-TrFE co-polymer of claim 1 , having a molecular weight of from 100 kDa to 800 kDa.3. The PVDF-TrFE co-polymer of claim 2 , wherein the molecular weight is from 200-600 kDA.4. The PVDF-TrFE co-polymer of claim 2 , wherein the molecular weight is from 100-300 kDA.5. The PVDF-TrFE co-polymer of claim 1 , having a formula X—(CHF)—(CHF)—X claim 1 , where Xis R claim 1 , H claim 1 , F or Cl claim 1 , R is a C-alkyl group that may contain from 1 to 2n+1 fluorine atoms claim 1 , Xis independently H claim 1 , F or Cl claim 1 , n is an integer of 1 to 6 claim 1 , p and q are integers of 2 or more claim 1 , and p+q>2000.6. The PVDF-TrFE co-polymer of claim 5 , wherein p+q>2500.7. The PVDF-TrFE co-polymer of claim 6 , wherein p+q<20 claim 6 ,000.8. The PVDF-TrFE co-polymer of claim 5 , wherein p and q are in a ratio of from 10:90 to 90:10.9. The PVDF-TrFE co-polymer of claim 1 , wherein the PVDF-TrFE co-polymer comprises a fluorinated polyalkene having a ratio of F atoms to H atoms of from 7:5 to 2:1.10. The PVDF-TrFE co-polymer of claim 1 , wherein the PVDF- ...

SURFACE MODIFICATION METHOD AND SURFACE-MODIFIED ELASTIC BODY

Provided are methods for surface-modifying a rubber vulcanizate and surface-modified elastic bodies, which can cost-effectively provide a variety of functions, including sliding properties, liquid leakage resistance, and protein adsorption resistance. Included is a method for surface-modifying a rubber vulcanizate as a modification target, the method including: step 1 of forming polymerization initiation points A on the surface of the modification target; step 2 of radically polymerizing a monomer starting from the polymerization initiation points A to grow polymer chains; and step 3 of adding a silane compound to the surfaces of the polymer chains, followed by reaction with at least a fluoroalkyl group-containing silane compound to form modified polymer chains. 1. A method for surface-modifying a rubber vulcanizate as a modification target , the method comprising:step 1 of forming polymerization initiation points A on a surface of the modification target;step 2 of radically polymerizing a monomer starting from the polymerization initiation points A to grow polymer chains; andstep 3 of adding a silane compound to surfaces of the polymer chains, followed by reaction with at least a fluoroalkyl group-containing silane compound to form modified polymer chains.2. The method according to claim 1 ,wherein step 3 includes adding a silane compound to surfaces of the polymer chains, followed by reaction with at least a fluoroalkyl group-containing silane compound and a perfluoroether group-containing silane compound to form modified polymer chains.3. A method for surface-modifying a rubber vulcanizate as a modification target claim 1 , the method comprising:step I of radically polymerizing a monomer in the presence of a photopolymerization initiator A on a surface of the modification target to grow polymer chains; andstep II of adding a silane compound to surfaces of the polymer chains, followed by reaction with at least a fluoroalkyl group-containing silane compound to form ...

Macromolecular compositions comprising indene-derivatives, preparation thereof, and use thereof

The present invention relates to a method for preparing a macromolecular composition comprising indene-derivatives. The invention also relates to the macromolecular compositions per se, and to methods of using the macromolecular compositions. The macromolecular compositions are useful for undergoing subsequent reactions with small molecules. 2. The method according to claim 1 , wherein the monomer of general formula (I) is selected from the group consisting of:4-ethenylindene, 5-ethenylindene, 6-ethenylindene, 7-ethenylindene,4-ethenylindane-1-one, 5-ethenylindane-1-one, 6-ethenylindane-1-one, 7-ethenylindane-1-one,4-ethenylindane-1,2-dione, 5-ethenylindane-1,2-dione, 6-ethenylindane-1,2-dione, 7-ethenylindane-1,2-dione,4-ethenylindane-2-one, 5-ethenylindane-2-one,4-ethenylindane-1,3-dione, 5-ethenylindane-1,3-dione,4-ethenylindane-1,2,3-trione, 5-ethenylindane-1,2,3-trione,4-ethenyl-2,2-dihydroxyindane-1,3-dione, 5-ethenyl-2,2-dihydroxyindane-1,3-dione,3-ethenylbenzene-1,2-dicarboxylic acid, 4-ethenylbenzene-1,2-dicarboxylic acid,dimethyl 3-ethenylbenzene-1,2-dicarboxylate, dimethyl 4-ethenylbenzene-1,2-dicarboxylate,diethyl 3-ethenylbenzene-1,2-dicarboxylate, diethyl4-ethenylbenzene-1,2-dicarboxylate,4-ethenyl-2-benzofuran-1,3-dione, 5-ethenyl-2-benzofuran-1,3-dione,3a,8a-dihydroxy-7-ethenyl-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione, 3a,8a-dihydroxy-6-ethenyl-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione,3a,8a-dihydroxy-5-ethenyl-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione, and 3a,8a-dihydroxy-4-ethenyl-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione.3. The method according to claim 1 , wherein the monomer of general formula (I) is selected from the group consisting of: 5-ethenylindene claim 1 , 6-ethenylindene claim 1 , 5-ethenylindane-1-one claim 1 , 6-ethenylindane-1-one claim 1 , 5-ethenylindane-1 claim 1 ,3-dione claim 1 , 5-ethenylindane-1 claim 1 ,2 claim 1 ,3-trione claim 1 , 5-ethenyl-2 claim 1 ,2-dihydroxyindane-1 claim 1 ...

CHLORINATED POLYOLEFIN RESIN COMPOSITION

An object is to provide a chlorinated polyolefin resin composition being superior in adhesion, solution stability, and chipping resistance. The chlorinated polyolefin resin composition contains a component (A): a polyolefin resin A having a melting point (Tm) obtained with a differential scanning calorimeter (DSC) in the range of 90 to 160° C., and a component (B): a polyolefin resin B having a melting point (Tm) obtained with a differential scanning calorimeter (DSC) in the range of 50 to 130° C., at least any one of the component (A) and the component (B), or a copolymer thereof being a chlorinated polyolefin resin (where |Tm−Tm|≥5° C.). 1. A chlorinated polyolefin resin composition comprising:{'sub': 'A', 'a component (A): a polyolefin resin A having a melting point (Tm) obtained with a differential scanning calorimeter (DSC) of 90 to 160° C., and'}{'sub': 'B', 'a component (B): a polyolefin resin B having a melting point (Tm) obtained with a differential scanning calorimeter (DSC) of 50 to 130° C.,'}{'sub': A', 'B, 'wherein at least one of the component (A) and the component (B), or a copolymer thereof is a chlorinated polyolefin resin, where |Tm−Tm|≥5° C.'}2. The chlorinated polyolefin resin composition according to claim 1 ,wherein at least one of the component (A) and the component (B), or the copolymer thereof is a graft-modified product of an α,β-unsaturated carboxylic acid or an anhydride thereof.3. The chlorinated polyolefin resin composition according to claim 1 ,wherein a content ratio of the component (A) and the component (B), represented by component (A)/component (B) is of 90/10 to 10/90, where component (A)+component (B)=100.4. The chlorinated polyolefin resin composition according to claim 1 ,wherein the component (B) is a propylene block copolymer comprising a propylene component and another α-olefin component, andthe propylene block copolymer comprises 60 mass % or more of propylene-derived constituent units.5. The chlorinated polyolefin resin ...

혼성 담지 메탈로센 촉매를 이용한 폴리올레핀의 제조 방법

본 발명은 혼성 담지 메탈로센 촉매를 이용한 폴리올레핀의 제조 방법에 관한 것이다. 본 발명에 따르면, 특정의 화학 구조를 갖는 메탈로센 화합물 2종 이상을 포함하는 혼성 담지 메탈로센 촉매의 존재 하에서 조촉매의 함량을 최적 범위로 투입함으로써, 좁은 분자량 분포를 갖는 폴리올레핀을 매우 효과적으로 제조할 수 있다. 특히, 본 발명의 제조 방법에 따른 폴리올레핀은 염소화(chlorination)시 폴리올레핀내의 염소 분포 균일성이 우수하게 나타나며, 염소화 폴리올레핀의 신율 및 PVC와의 상용성 및 충격보강 성능 등을 현저히 향상시킬 수 있고, 이로써 내화학성, 내후성, 난연성, 가공성 및 충격강도 보강효과 등이 우수하여 PVC 파이프 및 윈도우 프로파일(Window Profile)의 충격보강제 등으로 적합하게 적용될 수 있다.

Homo-or co-polymers of ethylene with combination of processability and toughness properties

The present invention discloses a homo- or co-polymer of ethylene characterised in that it combines the properties of: a) melt strength MS ≥ 0.021 p - 0.131 wherein melt strength MS is expressed in N and extruder head pressure p is expressed in MPa, when processed in a rheological extruder through a die with L/D of 30:2 at a rate of 500 s -1 and at temperature of 190 °C; b) long chain branching index g' determined by SEC-VISCO larger than 0.90; c) polydispersity index (Mw/Mn) of at most 7. It also discloses a method to prepare said polyethylene resin.

Supported hybrid catalyst and method for preparing polyolefin by using same

Hybrid Supported Catalyst and Method of Preparing Polyolefin Using the Same

Provided are a hybrid supported catalyst which includes two or more kinds of transition metal compounds having the following Chemical Formulas 1 and 2, thereby preparing a polyolefin, particularly, a high-density polyethylene having a molecular structure which is optimized to improve tensile strength of a chlorinated polyolefin compound, and a method of preparing a polyolefin using the same:wherein all the variables are described herein.

混杂负载型催化剂和使用该催化剂制备聚烯烃的方法

提供了混杂负载型催化剂以及使用该催化剂制备聚烯烃的方法，所述催化剂包含两种以上具有特定化学结构的过渡金属化合物，从而制备聚烯烃，特别是具有经优化以提高氯化聚烯烃混配料的拉伸强度的分子结构的高密度聚乙烯。

Polyethylene and chlorinated polyethylene thereof

A polyethylene, according to the present invention, has a narrow particle size distribution and minimizes crystalline structure variation, and thus, by reacting same with chlorine, a chlorinated polyethylene exhibiting excellent chlorination productivity and thermal stability may be produced.

α-olefin/para-alkylstyrene copolymers

Copolymers comprising poly(α-olefin) having at least few p-alkylstyrene (para-alkylstyrene) groups or/and p-alkylstyrene derivatives within the structure therein, said polymer having monomer units represented by the structural formula: ##STR1## in which R, R' and R" are, independently, either hydrogen, alkyl, or primary or secondary alkyls. Preferably, R is hydrogen and C 1 to C 10 linear and branched alkyl, and most preferably R is hydrogen, C 1 and C 2 . R' and R" are hydrogen, C 1 to C 5 alkyl, or C 1 to C 5 primary or secondary alkyl, and most preferably R' and R" are hydrogen. F comprises a hydrogen or a functional group, such as --COOH, --OH, --NH 2 , --Cl, --Br, --M, --COOM (M=metals, e.g. Li, Na, K and Ca) etc., or a mixture of functional group and hydrogen. In the copolymer composition, the α-olefin mole % (m) is between about 5 and 99.9. Preferably, m is between 85 and 99.9, and most preferably m is between 95 and 99.9. The sum of m and n (mole % of p-alkylstyrene) is 100. The copolymer having a number average molecular weight (Mn) of at least about 1,000, and preferably at least about 10,000. The copolymers also preferably have a ratio of weight average molecular weight (Mw) to number average molecular weight, or Mw/Mn of less than about 8, more preferably less than about 4, most preferably less than about 2.5. Also disclosed are polymerization process, involving transition metal catalysts (especially metallocene compounds with constrained ligand geometry) for producing α-olefin/p-alkylstyrene copolymers, and subsequently derivatization processes for producing functionalized copolymers of α-olefin and p-alkylstyrene by the functionalization of benzylic protons in p-alkylstyrene units of copolymer.

Functionalized α-olefin/para-alkylstryne copolymers

Functionalized copolymers of α-olefin and para-alkylstyrene having the formula: ##STR1## in which in which R, R' and R", independently, are hydrogen or primary or secondary alkyl groups; X comprises a functional group, such as --COOH, --OH, --SH, --NH 2 , --Cl, --Br, --M, --COOM (M=metals, e.g. Li, Na, K and Ca) and anhydrides; P comprises a polymer having the molecular weight of at least about 500, which can be derived from both step and chain polymerization reactions; Y is a chemical linkage between polymer P and para-alkystyrene side chain, which is also a residue derived from graft reaction; and the combination of a+b+c+d represents the empirical formula of a substantially random functional polymer, where a ranges from about 50 to about 100,000, b, c and d range from 0 to about 10,000, and the sum of c+d is at least 1, and processes for preparing the funcitonalized copolymers are disclosed.

Stabilized fluoropolymer and method for producing same

The present invention provides a method for producing a stabilized fluoropolymer which comprises producing the stabilized fluoropolymer by subjecting a treatment target substance containing a sulfonic-acid-derived-group-containing fluoropolymer to a fluorination treatment, wherein the sulfonic-acid-derived-group-containing fluoropolymer is a fluoropolymer containing -SO 3 M (in which M represents H, NR 1 R 2 R 3 R 4 or M 1 1/L ; R 1 , R 2 , R 3 and R 4 are the same or different and each represents H or an alkyl group containing 1 to 4 carbon atoms; and M 1 represents an L-valent metal), and the treatment target substance has a moisture content of not higher than 500 ppm by mass.

Polyisobutylenes and process for making same

The present invention generally relates to alcohol-terminated polyisobutylene (PIB) compounds, and to a process for making such compounds. In one embodiment, the present invention relates to primary alcohol-terminated polyisobutylene compounds, and to a process for making such compounds. In still another embodiment, the present invention relates to polyisobutylene compounds that can be used to synthesize polyurethanes, to polyurethane compounds made via the use of such polyisobutylene compounds, and to processes for making such compounds. In yet another embodiment, the present invention relates to primary alcohol-terminated polyisobutylene compounds having two or more primary alcohol termini and to a process for making such compounds. In yet another embodiment, the present invention relates to primary terminated polyisobutylene compounds having two or more primary termini selected from amine groups or methacrylate groups.

High impact styrene/acrylonitrile polymer blend compositions

Styrene/acrylonitrile (SAN) resin compositions are provided having both improved room temperature impact properties as well as good weatherability. The compositions comprise a mixture of SAN resin, an elastomeric halogenated copolymer comprising a C 2 to C 12 monoolefin, e.g. isobutylene, and a ring-substituted alklstyrene, e.g., para-methylstyrene, and a compatibilizing agent such as zinc stearate.

聚乙烯及其氯化聚乙烯

本发明提供了一种聚乙烯和使用它制备的氯化聚乙烯，通过实现具有低含量的低分子量和高含量的高分子量的分子结构，所述聚乙烯在制备氯化聚乙烯化合物时，能够在保持优异的加工性和门尼粘度特性的同时提高拉伸强度。

production process of a polyolefin, polyolefin and 1-hexene to be used as raw material in the production of low density linear polyethylene

processo de produção de poliolefina, poliolefina e 1-hexeno para material bruto de produção de polietileno de baixa densidade linear o objeto da presente invenção é prover um processo de produção de uma poliolefina, no qual atividade de catalisador é aperfeiçoada, e uma poliolefina tal como um polietileno de baixa densidade linear pode ser industrialmente produzido vantajosamente. a presente invenção refere-se a um processo de produção de uma poliolefina, no qual na produção de uma poliolefina através de reação de polimerização de uma olefina usando um catalisador, um haleto orgânico está presente em um sistema de reação em uma quantidade de 0,05 a 10 ppm em peso em termos de um átomo de halogênio como uma concentração em uma poliolefina de material em bruto, e 1-hexeno para material bruto para produção de polietileno de baixa densidade linear, contendo um haleto orgânico em uma quantidade de 0,05 a 1 o ppm em peso em termos de um átomo de halogênio . production process of polyolefin, polyolefin and 1-hexene for crude material for the production of linear low density polyethylene the object of the present invention is to provide a process for the production of a polyolefin, in which catalyst activity is improved, and a polyolefin such as a linear low density polyethylene can be advantageously industrially produced. the present invention relates to a process for the production of a polyolefin, in which in the production of a polyolefin through the polymerization reaction of an olefin using a catalyst, an organic halide is present in a reaction system in an amount of 0, 05 to 10 ppm by weight in terms of a halogen atom as a concentration in a polyolefin of crude material, and 1-hexene for crude material for the production of linear low density polyethylene, containing an organic halide in an amount of 0, 05 to 1 ppm by weight in terms of a halogen atom.

Metodo de produccion de poliolefina, poliolefina y 1-hexano para la produccion de un material sin procesar de baja densidad lineal.

El objeto de la presente invención es el de proporcionar un método de producción de una poliolefina, en donde la actividad del catalizador es mejorada, y una poliolefina tal como un polietileno de baja densidad lineal puede ser producido ventajosamente de manera industrial. La presente invención describe un método de producción de una poliolefina, en donde la producción de una poliolefina mediante una reacción de polimerización de una olefina que utiliza un catalizador, un organohálido se encuentra presente en un sistema de reacción, en una cantidad de 0.05 a 10 ppm del peso en términos de un átomo de halógeno como una concentración en una poliolefina de un material sin procesar, y 1-hexano para la producción de un material sin procesar de un polietileno de baja densidad lineal, que contiene un organohálido en una cantidad de 0.05 a 10 ppm del peso, en términos de un átomo de halógeno.

2,3,3,3-tetrafluoro-1-propene as diluent for producing novel butyl rubbers

FIELD: chemistry. SUBSTANCE: invention relates to an efficient method of producing copolymers with a specific microstructure. Method of producing copolymers involves taking a diluent and a mixture of monomers containing isobutylene and isoprene. Diluent contains at least 50.0 wt. % 2,3,3,3-tetrafluoro-1-propene. Weight ratio of the mixture of monomers to the diluent ranges from 5:95 to 95:5. Further, the mixture of monomers is polymerised in a reaction medium in the presence of an initiating system to form a copolymer solution containing a copolymer, a diluent and residual monomers. Polymerisation is carried out at temperature within range from -100 °C to 0 °C. At the last step, residual monomers and a diluent are separated from the reaction medium to obtain a copolymer. EFFECT: invention enables to obtain copolymers with a specific microstructure having more uniformly distributed cross-linking sites. 23 cl, 1 tbl, 12 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 699 793 C2 (51) МПК C08F 210/12 (2006.01) C08F 6/06 (2006.01) C08F 2/04 (2006.01) C08F 8/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C08F 210/12 (2019.05); C08F 6/06 (2019.05); C08F 2/04 (2019.05); C08F 8/22 (2019.05) (21)(22) Заявка: 2016146804, 30.04.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): АРЛАНКСЕО СИНГАПУР ПТЕ. ЛТД. (SG) 11.09.2019 30.04.2014 EP 14166697.4 (43) Дата публикации заявки: 30.05.2018 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: WO 2004/058836 A1, 15.07.2004. WO 2004067577 A2, 12.08.2004. RU 2422466 C2, 27.06.2011. RU 2491299 C2, 27.08.2013. (45) Опубликовано: 11.09.2019 Бюл. № 26 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 30.11.2016 2 6 9 9 7 9 3 Приоритет(ы): (30) Конвенционный приоритет: R U 30.04.2015 (72) Автор(ы): НГУЕН Пол (CA), ТИРТСТРА Стивен Джон (CA), ВАТСОН Джессика (CA) CA 2015/050363 (30.04.2015) C 2 C 2 (86) Заявка ...

Anti-agglomerants for the rubber industry

The invention relates to a method to reduce or prevent agglomeration of rubber particles in aqueous media by LCST compounds and elastomers obtained thereby. The invention further relates to elastomer products comprising the same or derived therefrom..

Para-alkylstyrene/isoolefin copolymers and functionalized copolymers thereof

A copolymer of a C 4 to C 7 isoolefin and a para-alkylstyrene is provided as well as the corresponding halogenated, functionalized and grafted derivatives thereof. Processes for producing these copolymers are also provided.

Para-alkylstyrene/isoolefin copolymers

copolymers which are the direct reaction product of isoolefin having from 4 to 7 carbon atoms and para-alkylstyrene and which have substantially homogeneous compositional distillation are disclosed. These copolymers are preferably copolymers of isobutylene and para-methylstyrene, and preferably at least about 95 wt. % of the copolymer has a para-alkylstyrene content within about 10 wt. % of the average para-alkylstyrene content for the overall composition, and even more preferably the normalized differential refractive index and ultraviolet curves obtained by gel permeation chromatography for these copolymers are essentially superimposeable. These copolymers can also be halogenated, and in a particularly preferred aspect of the invention selectively brominated polymers are provided, with almost exclusive substitution taking place on the para-alkyl group, so as to yield a highly desirable benzylic halogen, and preferably bromine, functionality. Methods for producing these copolymers and halogenated copolymers are also disclosed.

Halogenation of star-branched butyl rubber with improved neutralization

A process for halogenating star-branched butyl rubber is provided wherein water and a wetting agent or wetting agent precursor are added to a solution comprising the star-branched butyl rubber, solid particles of branching agent and an organic solvent prior to the neutralization step to increase the rate of neutralization of the hydrogen halide by-product of the halogenation reaction.

System and Process for Halogenating Olefinic-Derived Elastomers in the Bulk Phase

A system for halogenating olefinic-based elastomer, the system comprising a first extruder, a first kneader vessel downstream of said first extruder and in fluid communication with said first extruder, a second extruder downstream of said first kneader vessel and in fluid communication with said first kneader vessel, a second kneader vessel downstream of said second extruder and in fluid communication with said second extruder; and a third extruder downstream of said second kneader vessel and in fluid communication with said second kneader vessel. 112.-. (canceled)13. A process for halogenating an olefin-based elastomer while the olefinic-based elastomer is in the bulk phase , the process comprising:(i) reacting an olefinic-based elastomer substantially in the bulk phase with a halogenating agent within a first kneader reactor to produce halogenated olefinic-based elastomer and by-products of a halogenations reaction; and(ii) separating the halogenated olefinic-based elastomer from at least a portion of the by-products of the halogenation reaction within a second kneader vessel.14. The process of claim 13 , further comprising the step of deforming the olefinic-based elastomer to expose unreacted surfaces of the olefinic-based elastomer to the halogenating agent during said step of reacting.15. The process of claim 13 , where said step of reacting takes place when the olefinic-based elastomer is at a temperature of from about 20 to about 200° C. and a pressure of from about 0.5 to about 10 atmospheres.16. The process of claim 13 , further comprising the step of deforming the halogenated olefinic-based elastomer to expose the by-products of halogenation to a void space within said second kneader vessel during said step of separating.17. The process of claim 13 , where said step of separating takes place at a temperature of from about 20 to about 200° C. and a pressure of from about 0.02 to about 2 atmospheres.18. The process of claim 13 , where the olefinic-based ...

Process for the production of ethylene copolymers

Supported hybrid catalyst and method for preparing polyolefin by using same

Provided are a hybrid supported catalyst which includes two or more kinds of transition metal compounds having specific chemical structures, thereby preparing a polyolefin, particularly, a high-density polyethylene having a molecular structure which is optimized to improve tensile strength of a chlorinated polyolefin compound, and a method of preparing a polyolefin using the same.

Functionalized α-olefin/para-alkylstyrene terpolymers

Functionalized terpolymers of two different α-olefin and para-alkylstyrene are disclosed, wherein the functionalized terpolymers have a substantially homogeneous compositional distribution represented by the formula: ##STR1## in which R 1 , R 2 , R' and R" independently, are hydrogen or a primary or secondary alkyl group; X is a functional group, such as --COOH, --OH, --SH, --NH 2 , --Cl, --Br, --M, --COOM (M =metals, e.g. Li, Na, K and Ca) and anhydrides; P is a polymer having a molecular weight of at least 500; Y is chemical linkage between polymer P and para-alkystyrene side chain; and the combination of a+b+c+d+e represents the empirical formula of a substantially random functional polymer; where both a and b are greater than 0; where the sum of a+b ranges from about 50 to 100,000; where each of c, d and e range from 0 to 10,000; where both d and e can not be 0; and where the sum of c+d+e is at least 1.

Chlorinated ethylene-based polymers and compositions and articles prepared therefrom

The invention provides a chlorinated ethylene-based polymer, process for preparing the same, and compositions and articles prepared from the same. The chlorinated ethylene-based polymer has a low residual crystallinity, for example, less than 8 percent, a relatively high crystallization temperature, Tc, for example greater than, or equal to, 25° C., and a medium weight average molecular weight, Mw, for example, less than, or equal to, 325,000 g/mole.

Adhesive for chlorinated propylene-based polymer and chlorine-containing polymer or aromatic polymer

Polyolefin-derived dispersants

Ethylene-C 3 -C 10 alpha olefin copolymers, dispersants and lubricating oils/fuel compositions incorporating dispersants, and related methods are generally described herein. The copolymer may comprise ethylene-derived units and C 3 -C 10 alpha-olefin-derived units. The C 3 -C 10 alpha-olefin-derived units may have a carbon number from three to ten. For example, the C 3 -C 10 alpha-olefin-derived units may be propylene-derived units.

Chlorinated propylene-based polymer, production method thereof, and use thereof

Polyethylene with controlled wax content, chlorinated polyethylene thereof and molded article produced from the chlorinated polyethylene

Disclosed are polyethylene, chlorinated polyethylene thereof and a molded article produced from the chlorinated polyethylene. More specifically, disclosed are polyethylene for preparation of chlorinated polyethylene, the polyethylene having a molecular weight distribution (MWD) of 5 or less, a melting index (5.0 kg) of 0.1 to 10 dg/min, a weight average molecular weight of 50,000 to 300,000 g/mol, a melting temperature of 125 to 135° C., a wax content of 0.0001 to 3% by weight or 0.01 to 0.3% by weight and a density of 0.94 g/cm 3 or more, chlorinated polyethylene thereof and a molded article produced from the chlorinated polyethylene.

Hydrohalogenation of vinyl-terminated macromonomers and functionalized derivatives

This invention relates to a polyolefin composition comprising one or more of the following formulae: (I) or (II) wherein the PO is the residual portion of a vinyl terminated macromonomer (VTM) having had a terminal unsaturated carbon of an allylic chain and a vinyl carbon adjacent to the terminal unsaturated carbon; X is attached to the terminal portion of the VTM to provide PO- X or at the vinylidene carbon of the VTM to provide PO-CHXCH 3 ; and X is CI, Br, I, or F.

Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes

A compound useful for reducing fouling in a hydrocarbon refining process is provided. A method for preparing the compound includes hydrohalogenating a polymer having a vinyl chain end to obtain a halogen-containing terminal group, and reacting the terminal group with a polyamine. Methods of using the compound and compositions thereof are also provided.

Polyolefin functional at each end

A polyolefin which is functional at each end and which is represented by the following general formula (I) and has a molecular-weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) of 1.0 to 1.5. It is useful in various applications. X-P-Y (I) (In the formula (I), X and Y may be the same or different and each is a group containing at least one element selected among oxygen, sulfur, nitrogen, phosphorus, and halogens; and P represents a chain consisting mainly of units of an olefin constituted of carbon atoms and hydrogen atoms only, provided that X and Y are bonded respectively to the two ends of P.)

Hydrohalogenation of vinyl-terminated macromonomers and functionalized derivatives

This invention relates to a polyolefin composition comprising one or more of the following formulae: wherein the PO is the residual portion of a vinyl terminated macromonomer (VTM) having had a terminal unsaturated carbon of an allylic chain and a vinyl carbon adjacent to the terminal unsaturated carbon; X is attached to the terminal portion of the VTM to provide PO—X or at the vinylidene carbon of the VTM to provide PO—CHXCH 3 ; and X is Cl, Br, I, or F.

Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes

A compound useful for reducing fouling in a hydrocarbon refining process is provided. A method for preparing the compound includes hydrohalogenating a polymer having a vinyl chain end to obtain a halogen-containing terminal group, and reacting the terminal group with a polyamine. Methods of using the compound and compositions thereof are also provided.

Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes

A compound useful for reducing fouling in a hydrocarbon refining process is provided. A method for preparing the compound includes hydrohalogenating a polymer having a vinyl chain end to obtain a halogen-containing terminal group, and reacting the terminal group with a polyamine. Methods of using the compound and compositions thereof are also provided.

Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes

A compound useful for reducing fouling in a hydrocarbon refining process is provided. A method for preparing the compound includes hydrohalogenating a polymer having a vinyl chain end to obtain a halogen-containing terminal group, and reacting the terminal group with a polyamine. Methods of using the compound and compositions thereof are also provided.

Chlorinated polyolefins

A chlorinated polyolefin having a chlorine content of 15 to 30% by weight which is produced by chlorinating a polyolefin type polymer comprising propylene units and units of an α-olefin having 4 to 6 carbon atoms in a particular ratio and having a crystallinity of 10 to 50% and an intrinsic viscosity of 0.8 to 6.0 dl/g. This chlorinated polyolefin can be used as an adhesive for lamination of a chlorine-containing polymer (e.g. a polyvinylidene chloride) and an aromatic polymer (e.g. a polystyrene) and exhibits excellent adhesion characteristics at high temperature atmospheres.

Thermoplastic blend containing engineering resin

A thermoplastic composition which may be unvulcanized or vulcanized is provided which comprises a polymer blend of an elastomeric thermoplastic engineering resin and a halogen-containing copolymer of a C 4 to C 7 isomonoolefin and a para-alkylstyrene. A process for preparing a dynamically vulcanized composition is also provided.

Production method of polyolefin, polyolefin and 1-hexene for linear low density polyethylene production raw material

The invention aims at providing a process for the production of polyolefins which makes it possible by virtue of enhanced catalytic activity to produce polyolefins such as linear low-density polyethylene industrially advantageously. The invention relates to a process of producing polyolefins by polymerizing an olefin with a catalyst, wherein an organic halogen compound is present in the polymerization system in a concentration of 0.05 to 10ppm by weight in terms of halogen based on the raw material olefin; and 1-hexene to be used as the raw material in producing linear low-density polyethylene, which contains 0.05 to lOppm by weight of an organic halogen compound in terms of halogen. No Suitable Figure

Novel anti-agglomerants for the rubber industry

Polyolefin functional at one end

A single-chain-end functionalized polyolefin, which is represented by the following general formula (I): P—X  (I) wherein X is a group containing at least one element selected from oxygen, sulfur, nitrogen, phosphorus and halogens, P represents a polymer chain made mainly of an olefin composed only of carbon and hydrogen atoms, and X is bonded to a terminal of P, wherein the molecular weight distribution (Mw/Mn) obtained by gel permeation chromatography (GPC) is from 1.0 to 1.5.

Isotactic polystyrene having reactive groups

The present invention relates to a process for preparing functionalized isotactic polystyrene, functionalized isotactic polystyrene which can be prepared by the process of the invention, the use of the functionalized isotactic polystyrene of the invention as macromonomer, a process for preparing a macroinitiator, a macroinitiator which can be prepared by the abovementioned process, the use of the macroinitiator for controlled free-radical polymerization, the use of the functionalized isotactic polystyrene of the invention as macromonomer, preferably in copolymerization with olefins, ROMP with cycloolefins or for coupling with silicone segments, a process for epoxidizing the functionalized isotactic polystyrene of the invention, epoxidized isotactic polystyrene which can be prepared by the abovementioned process and a process for preparing soft thermoplastic elastomers (TPEs) by metathesis polymerization of the functionalized isotactic polystyrene of the invention with suitable polymers which have terminal double bonds and soft thermoplastic elastomers which can be prepared by the process of the invention.

Wax content controlled polyethylene, its chlorinated polyethylene and product thereof

본 기재는 폴리에틸렌, 이의 염소화 폴리에틸렌 및 이로부터 제조된 성형품에 관한 것으로, 보다 상세하게는 분자량분포도(MWD)가 5 이하이고, 용융지수(5.0㎏)가 0.1 내지 10 dg/min이며, 중량평균분자량이 50,000 내지 300,000 g/mol이고, 용융온도가 125 내지 135 ℃이며, 왁스 함량이 0.0001 내지 3 중량% 또는 0.01 내지 0.3 중량%이고, 밀도가 0.94 g/㎤ 이상으로, 염소화 폴리에틸렌의 제조에 사용되는 폴리에틸렌, 이의 염소화 폴리에틸렌 및 이로부터 제조된 성형품 등에 관한 것이다. The present invention relates to polyethylene, its chlorinated polyethylene, and a molded article produced therefrom. More particularly, the present invention relates to a polyethylene having a molecular weight distribution (MWD) of 5 or less, a melt index (5.0 kg) of 0.1 to 10 dg / Is in the range of 50,000 to 300,000 g / mol, the melting temperature is 125 to 135 占 폚, the wax content is 0.0001 to 3% by weight or 0.01 to 0.3% by weight, and the density is 0.94 g / Polyethylene, chlorinated polyethylene thereof, and a molded article manufactured from the same.

Polymeric containers for 1,1-disubstituted monomer compositions

卤化用单烯烃-共轭二烯烃共聚物溶液的制备方法

本发明涉及卤化用单烯烃‑共轭二烯烃共聚物溶液的制备方法。该方法包括：(1)将降温至‑35℃以下的终止剂溶液与单烯烃‑共轭二烯烃共聚物淤浆混合，终止剂溶液含有C 1 ‑C 2 的卤代烷烃和饱和脂肪醇A以及可选的C 5 ‑C 8 的脂肪族烷烃，饱和脂肪醇A为C 1 ‑C 5 的饱和一元脂肪醇、C 2 ‑C 4 的饱和二元脂肪醇和式(1)所示的饱和脂肪醇中的一种或多种，(2)用至少一种置换溶剂置换所得溶液中的卤代烷烃并脱除未反应的单体，置换溶剂选自C 5 ‑C 8 的脂肪族烷烃。该方法得到的卤化用丁基橡胶具有凝胶含量低的特点，并且该卤化用丁基橡胶中的重均分子量小于20,000的低分子量齐聚物含量低。

Process for the production of water and solvent-free halobutyl rubbers

본 발명은 무수 무용매 할로겐화 부틸 고무 생성물, 뿐만 아니라 그의 제조 방법에 관한 것이다. 방법은 a.) 1개 이상의 농축기 유닛에서 하나 이상의 할로겐화 부틸 고무 및 하나 이상의 휘발성 화합물을 함유하는 유체를 처리하는 단계, b.) 농축 유체를 재가열하는 단계, 및 c.) 재가열된 농축 유체를 1개 이상의 압출기로 공급하는 단계를 적어도 포함한다. The present invention relates to anhydrous, non-halogenated butyl rubber products, as well as processes for their preparation. The method comprising the steps of: a.) Treating a fluid containing at least one halogenated butyl rubber and at least one volatile compound in one or more concentrator units, b.) Reheating the enriched fluid, and c.) Reheating the reheated enriched fluid to 1 To at least one extruder.

一种控制胶液精制塔进料胶液浓度的方法和系统

本发明涉及丁基橡胶生产领域，公开了一种控制胶液精制塔进料胶液浓度的方法和系统，该方法包括：(1)将粗胶液制备单元获得的粗胶液引入至溶胶单元中进行第二溶胶处理，得到第一物料；(2)将所述第一物料引入至胶液烷烃混合单元中与烷烃溶剂进行接触，得到第二物料；(3)将所述第二物料引入至胶液精制单元中与气相烷烃逆流接触以进行精制处理，得到精制胶液。本发明的方法能够实现稳定地且灵活地控制胶液精制塔进料胶液的浓度。

Preparation of elastomeric, chlorinated ethylene polymers

A process of modifying ethylene polymers by reacting granular ethylene polymers having a density of about 0.87 to about 0.92 gram per cc and a pore volume of about 0.1 to about 1 cc per gram with a gaseous chlorinating agent to produce elastomeric, granular, chlorinated polymers having a tensile modulus of less than about 2,000 psi and a crystallinity of less than about 10 percent.

Preparation of elastomeric, chlorosulfonated ethylene polymers

A process of modifying ethylene polymers by reacting granular ethylene polymers having a density of about 0.87 to about 0.93 gram per cc and a pore volume of about 0.1 to about 1 cc per gram with a gaseous chlorosulfonating agent to produce elastomeric, granular, chlorosulfonated polymers having a tensile modulus of less than about 2,000 psi and a crystallinity of less than about 10 percent.

Preparation method of polyolefin using a supported hybrid metallocene catalyst

본 발명은 혼성 담지 메탈로센 촉매를 이용한 폴리올레핀의 제조 방법에 관한 것이다. 본 발명에 따르면, 특정의 화학 구조를 갖는 메탈로센 화합물 2종 이상을 포함하는 혼성 담지 메탈로센 촉매의 존재 하에서 조촉매의 함량을 최적 범위로 투입함으로써, 좁은 분자량 분포를 갖는 폴리올레핀을 매우 효과적으로 제조할 수 있다. 특히, 본 발명의 제조 방법에 따른 폴리올레핀은 염소화(chlorination)시 폴리올레핀내의 염소 분포 균일성이 우수하게 나타나며, 염소화 폴리올레핀의 신율 및 PVC와의 상용성 및 충격보강 성능 등을 현저히 향상시킬 수 있고, 이로써 내화학성, 내후성, 난연성, 가공성 및 충격강도 보강효과 등이 우수하여 PVC 파이프 및 윈도우 프로파일(Window Profile)의 충격보강제 등으로 적합하게 적용될 수 있다. The present invention relates to a method for preparing polyolefin using a hybrid supported metallocene catalyst. According to the present invention, polyolefin having a narrow molecular weight distribution can be very effectively produced by adding the content of the cocatalyst to an optimal range in the presence of a hybrid supported metallocene catalyst comprising two or more metallocene compounds having a specific chemical structure. can be manufactured. In particular, the polyolefin according to the production method of the present invention exhibits excellent uniformity of chlorine distribution in the polyolefin upon chlorination, and can significantly improve the elongation of the chlorinated polyolefin, compatibility with PVC, and impact reinforcing performance. It has excellent chemical properties, weather resistance, flame retardancy, processability and impact strength reinforcement effect, so it can be suitably applied as an impact modifier for PVC pipes and window profiles.

使用负载型混杂茂金属催化剂制备聚烯烃的方法

本公开涉及一种使用负载型混杂茂金属催化剂制备聚烯烃的方法。根据本公开，通过在包含两种以上的具有特定化学结构的茂金属化合物的负载型混杂茂金属催化剂的存在下以最佳含量引入助催化剂可以非常有效地制备具有窄分子量分布的聚烯烃。根据本公开制备的聚烯烃在氯化期间表现出优异的在聚烯烃中的氯分布的均匀性，从而显著地改善了氯化聚烯烃的伸长率，与PVC的相容性和冲击增强性能。因此，它表现出优异的耐化学性、耐候性、阻燃性、加工性和冲击强度增强效果，并且可以合适地用作PVC管材和窗户型材的冲击增强剂。

Method for preparing polyolefin by using supported hybrid metallocene catalyst

The present invention relates to a method for preparing a polyolefin by using a supported hybrid metallocene catalyst. According to the present invention, a polyolefin having a narrow molecular weight distribution can be very effectively prepared by injecting an amount of a cocatalyst in the optimum range in the presence of a supported hybrid metallocene catalyst comprising two or more types of metallocene compounds having specific chemical structures. Particularly, a polyolefin prepared according to the preparation method of the present invention shows excellent chlorine distribution uniformity within a polyolefin during chlorination, and can remarkably improve the elongation, the compatability with PVC, the impact modification performance and the like of a chlorinated polyolefin, thereby having excellent chemical resistance, weather resistance, flame retardancy, processability, impact strength modification effect and the like, and thus is suitably applicable to an impact modifier of a PVC pipe and a window profile, and the like.

Method for preparing polyolefin by using supported hybrid metallocene catalyst

Method for preparing polyolefin by using supported hybrid metallocene catalyst

The present disclosure relates to a method for preparing a polyolefin using a supported hybrid metallocene catalyst. According to the present disclosure, a polyolefin having a narrow molecular weight distribution can be prepared very effectively by introducing a cocatalyst in an optimum conent in the presence of a supported hybrid metallocene catalyst containing two or more metallocene compounds having a specific chemical structure. The polyolefin prepared according to the present disclosure exhibits excellent uniformity in chlorine distribution in polyolefin during chlorination, thereby significantly improving elongation of the chlorinated polyolefin, compatibility with PVC and impact reinforcing performance. Thus, it exhibits excellent chemical resistance, weather resistance, flame retardancy, processability and impact strength reinforcing effect, and can be suitably applied as an impact reinforcing agent for PVC pipes and window profiles.

Process for epoxidation of unsaturated polymer

A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.

Process for epoxidation of unsaturated polymer

A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no solvent, require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.

Process for epoxidation of unsaturated polymer

A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no solvent, require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.

Anti-agglomerants for the rubber industry

The invention relates to a method to reduce or prevent agglomeration of rubber particles in aqueous media by LCST compounds and elastomers obtained thereby. The invention further relates to elastomer products comprising the same or derived therefrom.

Improved halogenated butyl rubber

Butyl rubber having olefinic unsaturation of about 0.2 to about 2.5 mole percent halogenated to contain chlorine bound to the polymer of about 0.05 to about 0.39 weight percent or bromine of about 0.05 to about 0.49 weight percent. The new halogenated butyl rubber when cured with heat reactive phenolic resin cure system, typically including a metal oxide such as zinc oxide, has improved performance properties including tension set, hot elongation, resistance to scorch and improved stress-strain properties and flex fatigue resistance after aging. Such advantages are particularly evident when the halogenated polymer is used in compositions useful as curing elements such as those used in the manufacture of pneumatic tires.

Chlorinated and chlorosulfonated elastic substantially linear olefin polymers

Chlorinated and chlorosulfonated polyethylenes are produced by clorinating substantially linear olefin polymers having a melt flow ratio, I10/I2, » 5.63, a molecular weight distribution, Mw/Mn, defined by the equation: Mw/Mn « (I10/I2)-4.63, a critical shear rate at onset of gross melt facture of at least 50 percent greater than the critical shear rate at the onset of surface melt facture of a linear olefin polymer having about the same I2 and Mw/Mn and at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5 and their method of manufacture are disclosed. The chlorosulfonated polyethylenes are produced by treating the chlorinated polyethylenes with a mixture of gaseous chlorine and sulfur dioxide.

Chlorinated ethylene-based polymers and compositions and articles prepared therefrom

본 발명은 염소화 에틸렌-기재 중합체, 그의 제조 방법 및 그로부터 제조된 조성물 및 용품을 제공한다. 염소화 에틸렌-기재 중합체는, 예를 들어 8％ 미만의 낮은 잔류 결정화도, 예를 들어 25℃ 이상의 비교적 높은 결정화 온도 Tc 및 예를 들어 325,000 g/mol 이하의 중간 중량 평균 분자량 Mw를 갖는다. The present invention provides chlorinated ethylene-based polymers, processes for their preparation and compositions and articles made therefrom. The chlorinated ethylene-based polymer has a low residual crystallinity of, for example, less than 8%, for example a relatively high crystallization temperature Tc of 25 DEG C or higher and a medium weight average molecular weight Mw of, for example, 325,000 g / mol or less. 염소화 에틸렌-기재 중합체, 결정화도, 결정화 온도 Chlorinated ethylene-based polymer, crystallinity, crystallization temperature

Alpha-olefin/para-alkylstyrene copolymers and functionalized copolymers thereof

Copolymers comprising poly(α-olefin) having at least few p-alkylstyrene (para-alkylstyrene) groups or/and p-alkylstyrene derivatives within the structure therein, said polymer having monomer units represented by structural formula (A), in which R, R' and R' are, independently, either hydrogen, alkyl, or primary or secondary alkyls. Preferably, R is hydrogen and C1 to C10 linear and branched alkyl, and most preferably R is hydrogen, C1 and C2. R' and R' are hydrogen, C1 to C5 alkyl, or C1 to C5 primary or secondary alkyl, and most preferably R' and R' are hydrogen. F comprises a hydrogen or a functional group, such as -COOH, -OH, -NH2, -Cl, -Br, -M, -COOM (M = metals, e.g. Li, Na, K and Ca) etc., or a mixture of functional group and hydrogen. In the copolymer composition, the α-olefin mole % (m) is between about 5 and 99.9. Preferably, m is between 85 and 99.9, and most preferably m is between 95 and 99.9. The sum of m and n (mole % of p-alkylstyrene) is 100. The copolymer having a number average molecular weight (Mn) of at least about 1,000, and preferably at least about 10,000. The copolymers also preferably have a ratio of weight average molecular weight (Mw) to number average molecular weight, or Mw/Mn of less than about 8, more preferably less than about 4, most preferably less than about 2.5. Also disclosed are polymerization process, involving transition metal catalysts (especially metallocene compounds with constrained ligand geometry) for producing α-olefin/p-alkylstyrene copolymers, and subsequently derivatization processes for producing functionalized copolymers of α-olefin and p-alkylstyrene by the functionalization of benzylic protons in p-alkylstyrene units of copolymer.

Chlorinated and chlorosulfonated elastic substantially linear olefin polymers

Chlorinated and chlorosulfonated polyethylenes are produced by chlorinating substantially linear olefin polymers having a melt flow ratio, I 10 /I 2 , ≧5.63, a molecular weight distribution, M w /M n , defined by the equation: M w /M n ≧(I 10 /I 2 )-4.63, a critical shear rate at onset of gross melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a linear olefin polymer having about the same I 2 and Mw/Mn and at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5 and their method of manufacture are disclosed. The chlorosulfonated polyethylenes are produced by treating the chlorinated polyethylenes with a mixture of gaseous chlorine and sulfur dioxide.

Chlorinated and chlorosulfonated elastic substantially linear olefin polymers

Chlorinated and chlorosulfonated polyethylenes are produced by chlorinating substantially linear olefin polymers having a melt flow ratio, I 10 /I 2 , ≧5.63, a molecular weight distribution, M w /M n , defined by the equation: M w /M n ≦(I 10 /I 2 )-4.63, a critical shear rate at onset of gross melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a linear olefin polymer having about the same I 2 and M w /M n and at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5 and their method of manufacture are disclosed. The chlorosulfonated polyethylenes are produced by treating the chlorinated polyethylenes with a mixture of gaseous chlorine and sulfur dioxide.

Pelletized low molecular weight brominated aromatic polymer compositions

Novel polymer compositions of specified formula are converted into pellets of this invention by process technology provided by this invention. By forming a melt blend of a polymer of such polymer compositions together with a modest amount of at least one thermoplastic polymer of at least one monoolefinic monomer having 2-12 carbon atoms per molecule, and converting the melt blend into pellets as described herein, pellets can be formed produce during production, handling, and use, almost no "fines" or air-entrainable dusts. The pellets have an array of additional superior properties and characteristics.