Method of preparation of sorbing.

The present invention relates to a process for preparing sorbaits, from synthetic resins.

It is known from Eschrich Η ., Drent W, extracting Chromatography, Eurochemical infancy (June 1971) andr-to-271 utilized as part of the extraction chromatography, as stationary phase, sorbents which are constituted by a support and an extraction agent or mixture of extractants, the extractant, or this mixture of extractants, being able to interact with ions or molecules. It is known more than after Beranovà H, Novak had m, transporter. Zech. Mal. Reproducing system. 30 1073 - 1081 (1965) using synthetic resins, such as macroporous copolymers of styrene and divinylbenzene as supports on which load the extractant by impregnation of the copolymer with the extractant.

The sorbents on which the extractant was loaded by impregnating have the drawback of releasing the extractant in the mobile phase in a relatively short time, and therefore they don't have a short lifetime. On the other hand the elution profiles of such sorbents exhibit undesirable streaks formations.

The applicant has discovered according to the invention are produced with the sorbents made of synthetic resins which do not have the drawbacks mentioned above if there is added to the mixture to be polymerized compounds and mono - polyvinyl an extracting agent, a mixture of extractants or the solution of an extractant in a solubilizer, the extracting agent, the mixture of extractants or the solution of the extractant in a solubilizer being a solvent for the monomer compounds monoet polyvinyl, but not for the polymer, and the polymerization is carried out in the presence of the extractant, the crosslinker mixture extraction or the solution of the extractant in a solubilizer. The sorbents thus prepared contain the extracting agent or mixture of extraction agents included in the polymer.

As monovinyl compounds come into consideration for example: styrene, methylstyrene, acrylic acid, methacrylic acid, acrylonitrile polymers, vinylanisol, vinylnaphthalene, acrylic esters and methacrylic esters such as methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, tert-butyl acrylate, ethylhexyl acrylate, cyclohexyl acrylate, isobornyl acrylate, benzyl acrylate, phenyl acrylate, acrylates alkylphenyl, ëthoxyméthyle acrylate, ethoxyethyl acrylate, ethoxypropyl acrylate, acrylate propoxymethyl, propoxyethyl methacrylate acrylate, acrylate propoxypropyle,

.3 îate of ethoxyphenyl, cyclohexylvinylether¹ ethoxybenzyl, acrylate éthoxycyclohexyi .,

- ^ does ethyl acrylate, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, tert-butyl methacrylate, ethylhexyl methacrylate, cyclohexyl methacrylate, isobornyl methacrylate, benzyl methacrylate, phenyl methacrylate, phenyl methacrylate, methacrylate ethoxymethyl, ethoxyethyl methacrylate, ethoxypropyl methacrylate, methacrylate propoxymethyl, propoxyethyl methacrylate methacrylate, methacrylate propoxypropyle, ethoxyphenyl methacrylate, methacrylate ethoxybenzyl, ethylene, propylene, isobutylene, diisobutylene, vinyl chloride, vinyl acetate and vinylidene chloride. Also suitable are polyethylenic unsaturated monomers such as isoprene, butadiene and chloroprene which generally behave as if they that a double bond. Another alternative is to include heterocyclic monovinyl compounds as:

vinyl pyridine, methyl-2-vinyl 5 pyridine derivatives, ethyl-2 vinyl 5 pyridine derivatives, methyl-3 vinyl 5 pyridine derivatives, dimethyl-2.3 vinyl 5 pyridine derivatives, methyl-2 ethyl-3 vinyl 5 pyridine derivatives, vinyl 5 mlthyl-to-2 quinoline, methyl-4 viny1-to-2 quinoline, methyl-1 or methyl-3 vinyl 5 isoquinoline and vinyl pyrrolidone.

As polyvinyl compounds monomers include the following compounds: divinylbenzene, divinylpyridine, divinyltoluenes, divinylnaphtalenes, diallyl phthalate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, divinylxylene, divinylethylbenzene, divinyl sulfone, ethers of glycol or polyallylic polyvindic, glycerin and pentaerythritol, divinylcétone, divinyl sulfide, allyl acrylate, diallyl maleate, diallyl furaarate, diallyl succinate, diallyl carbonate, diallyl malonate, diallyl oxalate, diallyl adipate, diallyl sebacate, divinyl sebacate, diallyl tartrate, diallyl silicate, triallyl tricarballylate, triallyl aconitate gel, triallyl citrate, triallyl phosphate, the n, n-'methylenebisacrylamide, the n, n-' a-raéthylènediméthacrylamide, the n, n-' a-éthylènediacrylamide bis (α-méthylméthylènesulfonaraido) - L-, 2 ethylene, trivinylbenzene, polyvinylanthracenes trivinjinaphtalene and. the amount of polyvinyl compounds implemented may vary within wide limits. In general the content of such compounds will be about 5 to 70% by weight of the total monomer amount; preferred is a content of 8 to 60% by weight.

As extraction agents come into consideration all lesconçosés which are known as extractants in the extraction chromatography; a list is given in the Publication Eschrich H, Drent W, extracting Chromatography, Eurochemic. The sponsorship (June 1971) andr and 271. This are compounds within the class of widely varying as; ester, ® particularly acid esters and neutral phosphors acids, sulfides, oxides, aliphatic and aromatic sulfoxides, amine oxides, phosphine oxides, oxides and arsines. Another alternative is to include primary amines, secondary and tertiary amines, ammonium salts and sulfonium salts, ketones, ethers, carboxylic acids, sulfonic acids, mercaptan, oxime, lactams, hydroxylamine, quinolines and pyrazoles. It may be mentioned for example as esters of phosphorus acid: dibutyl phosphate, diamyl, dipentyle, dihexyle, diheptyl, dioctyl, dinonyl, didecyl, diundécyle, didodecyl, ditridecyl, phthalate, dipentadécyle, dihexadécyle, phosphates butyl and amyl, butyl and hexyl, butyl and octyl, hexyl and lauryl, tributyl phosphate, triamyle, trihexylphosphate, triheptyle, trioctyltrimellitate, trinonyle, tridecyl, triündécyle, tridodecyl, tritridécyle, tritétradécyle, tripentadécyle, trihexadécyle, phosphatesdedihexyle and nonyl, didodecyl and octyl, octyl, nonyl and decyl, phosphate salts of n, n dibutyldiéthylcarbamoyle, triisobutyl phosphate, triisooctyle, diisooctyl phthalate, thiophosphate triisooctyle, dihydrogen phosphate monbisooctyle, tetrabutyl hypophosphate, tetrabutyl pyrophosphate, hypophosphate n-dodecyl, monooctylcyclohexane phosphate, dioctyl phosphate, phenyl and phosphorothionate diisooctyl phthalate, di-n-butylphosphorothiolque, diheptyl phosphorothionate and phenyl.

As the esters, can be further include: butyl acetate, isoamyl acetate, methyl toluenesulfonate, benzoate ethyl chloro 2, ethyl salicylate.

As oxides, include: tributylphosphine oxide, oxide triamylphosphine, trihexylphosphine oxide, triheptylphosphine oxide, trioctylphosphine oxide, trinonylphosphine oxide, tridécylphosphine oxide, oxide triundécylphosphine, tridodécylphosphine oxide, triphenylphosphine oxide, oxide tridiphénylphosphine, dibutylamylphosphine oxide, oxide dihexylheptylphosphine, dioctyllaurylphosphine oxide, oxide hexyloctyllaurylphosphine, diphénylbenzylphosphine oxide, oxide dodécylphospholine, tétrahexylméthylènediphosphine oxide, oxide of tetra - (ethyl-2 ethylhexyl) méthylènediphosphine, tétraoctylméthylènediphosphine oxide, oxide tétraoctyl-to-éthylènediphosphine, tétraoctylpropylènediphosphine oxide, oxide tétraoctylbutylènediphosphine, tétraoctylhexylènediphosphine oxide, oxide tétraoctyloctylènediphosphine, tétraoctyldécylènediphosphine oxide, oxide hexaoctyltributylènetétraphosphine, décaoctylheptabutylèneoctaphosphine oxide, di-n-octyl amylsulfoxyde, di-n-octyl hexylsulfoxyde, di-n-octyl heptylsulfoxyde, di-n-octyl octylsulfoxyde, di isooctylsulfoxyde, di-n-octyl nonylsulfoxyde, di-n-octyl décylsulfoxyde, di η-to-undécylsulfoxyde, didodécylsulfoxyde, p toluylsulfoxyde, oxide tri-n-anylamine, oxide tri-n-octyl amine, oxide tri-isooctylamine, tri-n-dodecylamine, tri-n-oxide ^ octylarsine, sulfide

tri-n-octylphosphine.

As amine include: monooctylamine, nonylamine, decylamine, undécylamine, lauryl, dihexylamine, diheptylamine, dioctylamine, dinonylamine, didécylamine, diundécylamine, dilaurylamine, tetradecylamine, pentadécylamine, hexadêcylamine, ditridécylamine, ditétradécylamine, dipentadécylamine, dihexadécylamine, hexylheptylamine, hexyloctylamine, hexylnonylamine, hexyldécylamine, hexylundéçylamine, hexyldodécylamine, hexyllaurylamine, hexylhexadécylamine, heptyloctylamine, heptylnonylamine, heptylundécylamine, hexylpentadécylamine, nonyldecylamine, nonyllaurylamine, nonyltétradécylamine, lauryltétradécylamine, trlbutylamine, triamylamine, trihexylamine, triheptylamine, of trioctylamine, trinonylamine, tridécylamine, triundécylamine, trilaurylaaine, tritétradécylamine, tripentadécylamine, trihexadecylamine, dibutylamylamine, butyldiamylamine, dioctylnonylamine, dioctyllaurylaminehexylheptyloctylamine, tricaprylamine, n dodécényltrialkylméthylamines, n lauryltrialkylméthylamines, aéthyl-diphenylamine, aniline compounds, diphenylamine, an O -, m--, p toluidine, xylidines from. As quaternary ammonium salts include: tributylmethylammonium chloride, tripentylméthylammonium, trihexylraéthylammonium, triheptylraéthylammonium, willwill trioctylraéthylamœoniura, trinonylméthylammonium, willwill tridécylaéthylamaoniura, triundécylméthylaramonium, trilaurylméthylaamonium, tributyléthylammonium, tripentyéthyaramonium 1 1, trihexyléthylammonium, triheptyléthylamoonium, trioctyléthylammonium, trinonyléthylammoniua, tridécylëthylaomonium, triundécyléthylaamonium, trilauryléthylaamonium, tributylpropylamoonium, tripentylpropylammonium, trihexylpropylammonium, willwill triheptylpropylamaoniura, trioctylpropylatanonium, trinonylpropylammonium, tridécylpropylammonium, triundécylpropylamoonium, trilaurylpropylammonium, tetrabutylammonium, triamylbutylaamonium, trihexylbutylammonium, triheptylbutylammonium, trioctylbutylanmoniua, tributy1amy1aramonium, tétraamylammonium, trihexylamylanmsonium, trioctylamylammonium, tributylhexylammonium, triamylhexylammonium, tétrahexylamraonium, triheptylhexylamraonium, willwill trioctylhexylamooniura, dibutylamylméthylammonium, butyldiaraylméthylammonium, butyldiamylpropylammonium, dioctyllaurylbutylammonium, methyl-tricaprylammonium, diisobutylphénoxyéthyldiméthylbenzylammonium, diisobutylcrésoxyéthyldiméthylbenzylammoniùm, méthyldodécylbenzyltrioéthylaaoonium, methyldodecylxylylene bis - (trimethylammonium).

As trialkylsulfonium salts, include: trioctylsulfonium chlorides, trinonylsulfonium, tridécylsulfonium, triundécylsulfonium, tridodécylsulfonium, tritétradécylsulfonium, trihexadécylsulfonium, di-decyl-mono mêthylsulf onium compound.

As ethers, include: isopropyl ether, ether of bis (~2 butoxy-ethyl) ether of bis - (cyano 2 ethyl) of 1' ethylene glycol, the tris (cyanû-to-2 ethoxy) - L-, propane is 2.3. hexakisphosphate (cyano 2 ethoxy) 1, 2, 3, 4, 5, 6 hexane diisocyanate.

As ketones, it may. name: n dibutylcétone, n diamylcétone, n dihexylcétone, n dioctylcétone, acetylacetone, acetophenone, benzophenone.

As carboxylic acids come into consideration acids

straight or branched chain, optionally substituted with halogens,

c_C. - C.₁₀ , acids in C, c, .. being preferred. Examples include acid

3 AO/10

valerianic, caproic acid, oenanthic, caprylic, pelargonic, capric, lauric, myristic, palmitic, margaric, stearic, phenyl-4 valerianic and " - bromqlauric.

As sulfonic acids, include: dinonylnaphthalene sulfonic acid, m xylidinesulfonic, di-n-octyl octylthiosulfuric.

As oxime, include :•benzyloxime, hydroxy 2 dodecyl 5 bensophénoneoxime, diethyl-5.8 hydroxy 7 reduce emissions-oxime 6.

As mercaptan, mercaptans may be used substituted by

alkyl or aryl groups. Can include for example the following compounds: propylmercaptan, butylmercaptan, amylmercaptan, isopropylmercaptan, isohutylmercaptàn, isoamylmercaptan, thiophenol, thio-O-cresol, a thio-m-cresol, thiourea P-cresol, thio-naphthol and thio P-naphthol.

Can also be used as extractants for use phosphonates of the general formula:

I

wherein RP is £the R and R ^ independently represent alkyl straight chain or branched to c ^ grams, preferably in c, . to c ^ - the O *¹ include for example the following compounds: tributyl phosphonates, triamyle, trihexylphosphate, triheptyle, trioctyltrimellitate, trinonyle, tridecyl, triundécyle, trilauryl, tritétradécyle, tripentadécyle and trihexadécyle.

' Can be further include phosphinates are of the general formula:

GOLD.

II wherein SR ^ and R have the meanings given for formula I.

Can include phosphinates tributyl, triamyle, trihexylphosphate, triheptyle, trioctyltrimellitate, trinonyle, tridecyl, triundécyle, trilauryl, tritétradécyle, tripentadécyle and trihexadécyle.

Gum other compounds which can be dubbed TAIS out as' extraction, can be further include the following compounds: dodecyl-7 hydroxy 8 quinoline, quinoline hydroxy 8, substituted n-benzoyl-phenylhydroxylamine, isooctyl thioglycolate, caprolactam, diphenylthiocarbazone, tertiohexyldécylmercaptan, n-hexadecyl-n-'-phenylurea, N oléylhydroxylamine, tétrachlorohydroquinone, methylglyoxal bis - (hydroxy 2 anchor-tie), Phenylbenzohydroxamic acid, (thenoyl-to-2) trifluoroacetic 3, 3, 3 - L-acetone, -7 hydroxyquinoline (carboxyméthoxyanilinobenzyl), the di-dodecyl-Monosubstituted, heptadécanedionedioxime and 2.3, the n - (P hexadécylphényl) pyrrolaldimine, the n - (n-octyl) - (tetramethyl-2, 2, 4, 4 a butyl) -4 pyrrolaldimine, tetraphenyl boron, diisobutylcarbinol, sec-butyl 4 (a CT-methylbenzyl) phenol -2, tert-butyl 4 (CT--methylbenzyl) phenol -2, the bis - (amino-octylsulfinyl) - ethane, the bis (n octylsulfinyl) - methane, N benzoylphénylhydroxylamine, phosphonate-n, n dibutyldiéthylearbaraoyle, dibenzoylmethane, dicyanodiéthyle sulfide, dimethyl disulfide, dibutyldiglycol, quinoline oéthyl-to-2, of tetrakis (methyl-2 hexyDphosphonium, diphosphonate tetrabutylmethylene, diphosphonate tetrabutylethylene, acétylpivalylméthane, trifluoroacétylpivalylméthane, pentafluoropropanoylpivalylméthaneheptafluorobutanoylpivalylméthane and, as well as substituted pyrazoles of the formula:

R

VBE1

<

THE N/

NR

wherein R ^ represents a hydrogen atom, methyl, ethyl, n-butyl, phenyl or benzyl and R ^₃ The rg * and R ^ are determined by the equations

R_C. THE R -=, =CH.C - HR. or R, =H, ..

5, 7 2 n + 1 2 6 n 2 n + l η

Used of the extractants in general in amounts of 10 to 90% by weight relative to the total amount of monomers; preferred is a ratio of 40 to 75% by weight.

Could carry out the extraction agents individually or in mixtures. Coimnè mixtures, include:

phosphate/trlbutyle trioctylphosphine oxide,

As trialkylsulfonium salts, include: trioctylsulfonium chlorides, trinonyl ' sulphonium, tridécylsulfonium, triundécylsulfonium, tridodécylsulfonium, tfitétradéeylsulfonium, trihexadécylsulfonium, di-decyl-mono eêthylsulfonium.

As éthersj include: isopropyl ether, ether of bis (butoay *" 2 ethyl) ether of bis - (cyano 2 ethyl) ethylene glycol, the tris (cyano 2 ethoxy) - L-, propane is 2.3. hexakisphosphate (cyano 5 ethoxy acetic acid) 1, 2, 3, 4>5>6 hexane diisocyanate.

As ketones, include: n dibutylcétone, n diamylcétone, n dihexylcétone, n dioctylcétone, acetylacetone, acetophenone, benzophenone.

As carboxylic acids come into consideration acids

straight or branched chain, optionally substituted with halogens,

valerianic, caprolque, oenanthic, caprylic, pelargonic, capric, lauric, myristic, palmitic, margaric, stearic, phenyl-4 valerianic and a-brotw? lauric.

As sulfonic acids, include: dinonylnaphthalene sulfonic acid, m xylidinesulfonic, di-n-octyl octylthiosulfuric.

As oxime, include: benzyloxime, hydroxy 2 dodecyl 5 benzophénoneoxime, diethyl-5.8 hydroxy 7 reduce emissions-oxime 6.

As mercaptan, mercaptans may be used substituted by

alkyl or aryl groups. Can include for example the following compounds: propylmercaptan, butylmercaptan, amylmercaptan, isopropylmercaptan, isobutylmercaptan, isoamylmercaj>of tan, thiophenol, thio-O-cresol, a thio-m-cresol, thiourea P-cresol, thiourea TDC-naphthol and thio P-naphthol.

' Can also be used as extractants for use phosphonates of the general formula:

I

wherein RP R.₂ ^ and R independently represent an alkyl radical is a linear or branched to c ^ grams, preferably C ^ - ^ c include for example the following compounds: tributyl phosphonates, triamyle, trihscyle, triheptyle, trioctyltrimellitate, trinonyle, tridecyl, triundécyle, trilauryl, tritétradécyle, tripentadécyle and trihexadécyle.

' Can be further include phosphinates are of the general formula:

II wherein R ^, ^ R.^and R3^have meaning given for formula I.

Can include phosphinates tributyl, triamyle, trihexylphosphate, triheptyle, trioctyltrimellitate, trinonyle, tridecyl, triundécyle, trilauryl, tritétradécyle, tripentadécyle and trihexadécyle.

Gum other compounds which may be implemented as' extraction, can be further include the following compounds: dodecyl-7 hydroxy 8 quinoline, quinoline hydroxy 8, substituted n-benzoyl-phenylhydroxylamine, isooctyl thioglycolate, caprolactam, diphenylthiocarbazone, tertiohexyldécylmercaptan, n-hexadecyl-n-'-phenylurea, N oléylhydroxylamine, tétrachlorohydroquinone, methylglyoxal bis - (hydroxy 2 anchor-tie), phenylbenzohydroxaraic acid, (thenoyl-to-2) trifluoroacetic 3, 3, 3 - L-acetone, -7 hydroxyquinoline (carboxyméthoxyanilinobenzyl), the di-dodecyl-Monosubstituted, heptadécanedionedioxime and 2.3, the n - (P hexadécylphényl) pyrrolaldimine, the n - (n-octyl) - (tetramethyl-2, 2, 4, 4 a butyl) -4 pyrrolaldimine, tetraphenyl boron, diisobutylcarbinol, sec-butyl 4 (α-methylbenzyl) phenol -2, tert-butyl 4 (α-methylbenzyl) phenol -2, the bis - (amino-octylsulfinyl) - ethane, the bis (n octylsulfinyl) - methane, N benzoylphénylhydroxylamine, phosphonate-n, n dibutyldiéthylcarbamoyle, dibenzoylmethane, dicyanodiéthyle sulfide, dimethyl disulfide, dibutyldiglycol, methyl-2 quinoline, of tetrakis (methyl-2 ethylhexyl) phosphonium salts, j-bisphosphonate<_I tetrabutylmethylene, diphosphonate tetrabutylethylene, acétylpivalylméthane, trifluoroacétylpivalylméthane, pentafluoropropanoylpivalylméthaneheptafluorobutanoylpivalylméthane and, as well as substituted pyrazoles of the formula:

VBE1

{

THE R:

//N-VBE1

NR

*

wherein R ^ represents a hydrogen atom, methyl, ethyl, n-butyl, phenyl or benzyl and R ^, ^. ^ the R and R are determined by the equations

R==R-CH2 -₀ H -. or R, =this,

5, 7 2 n + 1 2 6 n 2 n + l η

Used of the extractants in general in amounts of 10 to 90% by weight relative to the total amount of monomers; preferred is a ratio of 40 to 75% by weight,

Could carry out the extraction agents individually or in mixtures. As mixtures, year include:

tributyl phosphate/trioctylphosphine oxide,

phosphate/trihhtyle tricresylphosphate,

tributyl phosphate/dioctyl phosphate,

tributyl phosphate/dibutyl phosphate,

tributyl phosphate/phosphate-die trioctyltrimellitate/dioctyl phosphate, tributyl phosphate/tricresylphosphate/trioctylphosphine oxide

the Ty 1 rpm lo C. amino/rev inony Amin to 1 W,

of trioctylamine./ trilaurylméthylammonium chloride, aniline derivatives of trioctylamine // tetrabutylammonium nitrate,

dioctyl phosphate/of dithizone,

capry acid anhydride/1' phbsphat ^ e of triisooctyle,

butyl acetate/dibutyl ether/butanol extract.

The ratios of the extractants therebetween in such blends can vary within wide limits. The term "solubilizer" corresponds to compounds which are a solvent both of the extractant mono - and compounds and polyvinyl implemented. This destydrocarhares are optionally halogenated straight chain or branched aliphatic, cycloaliphatic and aromatic but also compounds such as ketones, ethers and alcohols. Include: normal hexane, or heptane, isooctane, nonane derivatives, decane, undecane, dodecane, dl-dodecane, oil, white oil, paraffin oil, and cyclopentane, cyclohexane derivatives, methylcyclohexane, dimethylcyclohexane, chloroform, carbon tetrachloride, butyl iodide, dibromo 1.2 a propane, ethane trichloro 1, 1, 1, trichloro 1, 1, 2 ethane, propane is PCP and 1, 1, 2, 3, 3, platinic 1 dodecane, benzene, toluene, xylenes, mésitylfene, chlorobenzene, iodobenzene, nitrobenzenes, diphenylmethane, diphenylethane, naphthalene, -diisopropylbenzene, n dibutylcétone, n diamylcétone, n dihexylcétone, n dioctylcétone, methyl isobutyl ketone, acetylacetone, aeétophénone, benzophenone, dipropyl ether, dibutyl ether, ether diisoamylic, dihexylic ether, ether diheptylic, di isooctylic ether, dioctyl ether, amyl alcohol, alcohol I-amyl alcohol, octyl alcohol, dodecyl alcohol, cyclohexanol derivatives.

The preparation is carried out generally by dissolving sorbents

the compounds mono - and polyvinyl in the extracting agent,

the mixture of extractants or the solution of an extractant in a solubilizer, and subsequently polymerizing after addition of a polymerization catalyst in a known manner.

To prepare sorbents in the form of beads, is carried out generally by pouring in a first mixture of water and a stabilizer for emulsions a mixture of mono - and polyvinyl compounds,

the catalyst and the extractant with stirring until and drop formation.

The stabilizers of emulsions are known. Economic analysis methylcellulose, 1' hydroxyethylcellulose, carboxymethylcellulose, gelatin, gum arabic, styrene/maleic anhydride copolymers, polyvinyl alcohol, bentonite, sodium lauryl sulfate and the mersolates.

The catalysts used are also known, include acetyl peroxide, benzoyl peroxide, 1 'tertiary butyl hydroperoxide, cumene peroxide, lauryl peroxide, 1 'azo bis isobutyronitrile, methyl ethyl ketone peroxide, the peroxide tetralin and persulfates.

The catalysts are used in dosages of 0.01 generally to 4% by weight relative to the total monomer amount; preferred doses between 0.2 and=27, by weight,

The polymerization temperature is generally between 30 and 150^has C and preferably between 60 and 95 °c. The temperatures above 100 °c require the use of external pressures. Carrying out the polymerization is thus not restricted to normal pressure but may also occur under pressure.

The sorbents obtained according to the method of the invention does not substantially release extractant in the mobile phase. The curves of élutkn substantially do not smearing. Figures 1 and 2 allow comparing the elution profiles of eorbants prepared above with those obtained by eluting sorbents according to known methods. The sorbents-utilized in Figures 1 and 2 have been prepared in a manner known from Beranovà according to H. Novak had m, transporter comprising Zech. Reproducing system. 30, 1073 - 1081 (1965) by impregnating 100 g of a macroporous copolymer of divinylbenzene and 87 . 92% styrene with 67 ml of phosphate tri-n-butyl (fig. 1) respectively by impregnating a macroporous copolymer of 75% and 25% of divinylbenzene styrene with 150 ml phosphate tri-n-butyl (fig. 2), and, 'd ' on the other hand, by the method according to the invention as described in the example 1, by copolymerization of styrene 36.8%, 3.2% of divinylbenzene and 60% phosphate tri-n-butyl (fig. 1) respectively 30% styrene, divinyl benzene in the presence of 10% 60% phosphate tri-n-butyl (fig. 2). Is filled in each case a column of 2.4 cm diameter and a height of 24 cm with 100 ml of sorbent and introduced into 100 ml of a uranyl nitrate solution at a concentration of 100 g/l ^ ^ in ENT n as the mobile phase.

Subsequently washed the sorbents charged both with HNO is ^ ^ 150 n and is eluted with water. The curves designated by I in Figure 1 and Figure 2 represent the breakthrough curves sorbents according to the invention. See very clearly that - these curves, the ' to-formationformation.de streaks, as-shown in curves of elution of the sorb a-d prepared according to known methods is practically eliminated. They can also see a very sharp increase in capacity in the case of sorbents prepared above.

The following examples illustrate the invention without however limiting its scope.

EXAMPLE 1 '■"

To a base mixture of 1500 parts water and 130 parts of a 2.5% solution of methyl cellulose, is added a solution of 13.4 parts of divinylbenzene to 60.8%, 136.6 parts styrene, 1.5 part of benzoyl peroxide and 350 parts of phosphate tri-n-butyl. The mixture is heated with stirring 3 hours at 80 °c, is left at this temperature for 10 hours and then rises the temperature in 1 hour to 90 °c. After cooling, the aqueous phase is separated off and washed quickly the obtained polymer with 1' water.

EXAMPLE 2

Operation is carried out as in the example 1 with the difference that is introduced in the base mixture a solution of 32.9 parts divinylbensene to 60.8%, 167.1 parts vinyl toluene, 2 parts of benzoyl peroxide and 300 parts of phosphate tri-n-butyl.

EXAMPLE 3

Operation is carried out as in the example 1 with the difference that is introduced into the base mix 49.3 parts of divinylbenzene to 60.8%, 150.7 parts styrene, 3 parts of azo bis isobutyronitrile and 300 parts of dodecylamine.

EXAMPLE 4

Operation is carried out as in the example 1 with the difference that is introduced into the base mix to 60.8% 65.7 parts of divinylbenzene, 134.3 parts styrene, 2 parts of azo bis isobutyronitrile and 150 parts 150 parts phosphate chlorododecane and bis - (ethyl-2 hexyl).

EXAMPLE 5'

Operation is carried out as in the example except that is introduced into the mixture of base-divinylbenzene to 60.8% 65.7 parts,

134.3 parts styrene, 3 parts of azo bis isobutyronitrile, 240 parts of chloro-1 dodecane and 60 parts of bis - (ethyl-2 ethylhexyl) - amino.

EXAMPLE 6

Operation is carried out as in the example 1 with the difference that is introduced into the base mix 32.8 parts of divinylbenzene to 60.8%, 67.2 parts styrene, 1 sP:^T'e * O-bis isobutyronitrile and 150 parts of tricaprylamine.

EXAMPLE 7

Operation is carried out as in the example 1 with the difference that is introduced into the base mix 142.6 parts of divinylbenzene to 56.1%, 57.4 parts styrene, 6 parts of azo bis isobutyronitrile and 300 parts of amino-a 9 heptadecane.

EXAMPLE 8

Operation is carried out as in the example 1 with the difference that is introduced into the base mix 178.3 parts of divinylbenzene to 60.8%, 21.7 parts styrene, 6 parts of azo bis isobutyronitrile and 300 parts of bis - (ethyl-2 ethylhexyl) amine hydrochloride.

EXAMPLE 9

Operation is carried out as in the example 1 with the difference that is introduced into the base mix 164.4 parts DPs to 60.8% divinylbenzene, 35.6 parts styrene, 6 parts of azo bis isobutyronitrile and 300 parts of éthyl-to-2 ethylhexylamine.

EXAMPLE 10

Operation is carried out as in the example 1 with the difference that is introduced into the base mix 123.9 parts of divinylbenzene to 60.5%, 26.1 parts styrene, 1.5 part of benzoyl peroxide and 350 parts of tributyl phosphate.

EXAMPLE 11

Has a mixture of 307 parts water and 27 parts of a 2.5% solution of methylcellulose solution is added 21.7 parts of divinylbenzene to 96.8%, 8.3 parts styrene, 0.3 part of benzoyl peroxide and 70 parts of phosphate tri-n-butyl. Stirring the mixture is heated in 3 hours to 80 °c, is left at this temperature for 15 hours and mounting the temperature in 1 hour to 90 °c. After cooling, the aqueous phase is separated off and washed quickly with water the polymer, obtained in the form of beads.

EXAMPLE 12

Has a mixture of 1000 parts water and 87 parts of a 2.5% solution of methylcellulose, solution is added 124.4 parts of divinylbenzene to 95.5%, 75.6. parts styrene, 2 parts of benzoyl peroxide, 150 parts of caprylic acid and 150 parts phosphate bis (ethyl-2 hexyl). The mixture is heated with stirring in 3 hours to 80 °c, is left at this temperature for 10 hours and mounting the temperature in 1 hr at 90 °c. After cooling, the aqueous phase is separated off and washed quickly with water the resulting polymer in the form of beads.

EXAMPLE 13

Has a mixture of 13.6 326.4 parts water and portions of a 2.5% solution of methylcellulose, added 30 parts of divinylbenzene to 96.8%, 70 parts of phosphate tri-n-butyl and 0.7 part of benzoyl peroxide. The mixture is heated with stirring in 3 hours to 80 °c, is left at this temperature for 10 hours and then heating * 90 °c in 1 hour. After cooling, the polymer obtained is separated in the form of beads from the aqueous phase and washed quickly with water.

EXAMPLE 14

Operation is carried out as in the example 1 with the difference that is added to the basic mixture 42.6 parts of divinylbenzene to 52.8%, 407.4 parts styrene, 4.5 parts of azo bis isobutyronitrile, 25 parts of methyl chloride tricaprylammonium chlorododecane and 25 parts.

EXAMPLE 15

Operation is carried out as in the example 1 with the difference that is added to the basic mixture 127.1 parts of divinylbenzene to 52.8%, 172.9 parts styrene, 4 parts of azo-bis ispbutyronitrile and 100 parts of tributylamine,

EXAMPLE 16

Operation is carried out as in the example 1 with the cifférence added to the basic mixture 33.5 parts of divinylbenzene to 96.8%, 16.5 parts styrene, 0.5 part of benzoyl peroxide, 360 parts of PCP and 1, 1, 2, 3, 3 propane and 90 parts of tricresylphosphate.

EXAMPLE 17

With a mixture of 500 parts water and 130 parts of a 2.5% solution of methylcellulose, is added a solution of 243.9 parts of divinylbenzene to 61.5%, 56.1 part styrene, 6 parts of azo bis isobutyronitrile and 200 parts of sulfide dicyano-2.2 ' diethyl. The mixture is heated

by stirring in 6 hours to 80 °c, is left at this temperature for 7 hours and then rises the temperature to 90 °c in 3 hours. After cooling, the polymer obtained is separated in the form of beads from the aqueous phase and washed quickly with water.

EXAMPLE 18

With a mixture of 500 parts water and 130 parts of a 2.5% solution of methylcellulose, is added a solution of 155 parts of divinylbenzene to 96.8%, 45 parts styrene, 2 parts of azo bis isobutyronitrile and 300 parts of chloroform. The mixture is heated rapidly agitantà60 °C and allowed at that temperature for 15 hours. After cooling, the polymer beads are separated from the aqueous phase and washing them quickly

water.

EXAMPLE 19

In a mixture of 500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 51.7 parts of divinylbenzene to 96.8%, 48.3 parts styrene, 1 part of benzoyl peroxide, ' 200 parts of white oil, 38.6 parts of butanol density 0,810 gm/ml., 36.8 parts of dibutyl 0,773 gm/ml and density 124.6 parts of butyl acetate density 0,875 grams/milliliter. The mixture is heated with stirring in 4 hours to 80 °c, is left at this temperature for 9 hours and then rises the temperature in 3 hours at 90 °c. After cooling, the polymer beads are separated from the aqueous phase obtained and washing them quickly with water.

EXAMPLE 20

In a mixture of 500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 130.1 parts of divinylbenzene to 61.5%, 269.9 parts styrene, 4 parts of peroxide

benzoyl, 20 parts of phosphate TrI n-butyl and 80 parts n-octane.

Heating the mixture with stirring in 4 hours at 85 °c, is left at this temperature for 10 hours and the temperature is then raised to 90 °c in 1 hour.

Polymer beads are separated from the aqueous phase and washed quickly with water.

EXAMPLE 21

In a mixture of 1500 parts of a saturated solution of sodium sulfate, is introduced into a solution of 216.9 parts of divinylbenzene to 96.8%, 83.1 parts styrene, 3 parts of benzoyl peroxide, 160 parts phosphate tri-n-butyl and 40 parts of oxo-to-1 phospholine dodecyl 1. The mixture is heated with stirring in 3 hours at 85 °c ., is left at this temperature for 10 hours, and then mounted the temperature at 95 °c in 1 hour. After cooling, the polymer beads are separated from the aqueous phase obtained and washed quickly with water.

EXAMPLE 22

In a mixture of 1500 parts water and 130 parts of a solution

2.5% of methylcellulose, introduced a solution of 289.3 parts of divinylbenzene to 96.8%, 110.7 parts styrene, 4 parts of azo bis isobutyronitrile and 100 parts of aniline. The mixture is heated in 5 hours with stirring to 81 °c, is left at this temperature for 10 hours and the temperature is then raised to 91 °c in 1 hour. Polymer beads are separated from the aqueous phase and washed quickly with water.

EXAMPLE 23

In a mixture of 1500 parts water and 130 parts of a solution of methylcellulose 2, -5%, is introduced into a solution of 62 parts of divinylbenzene to 96.8%, 38 parts styrene, 1 part of benzoyl peroxide,

200 parts phosphate bis - (ethyl-2 hexyl), 100 parts of white oil and 100 parts of a propane pentaehloro and 1, 1, 2, 3, 3. The mixture is heated with stirring in 1 hour to 80 °c, is left at this temperature for 12 hours and fitting the temperature at 90 °c in 1 hour. After cooling, the polymer beads are separated from the aqueous phase obtained and washing them rapidly to the water.

EXAMPLE 24

In a mixture of 500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 75.7 parts of divinylbenzene to 52.8%, 24.3 parts styrene, 1 part of azo bis isobutyronitrile and 380 parts of dimethyl disulfide and 20 parts of polystyrene. The mixture is heated with stirring in 1.5 hour to 70 °c, is left at this temperature for 10 hours and then mounting the sputtering temperature 90 °c in 1 hour. After cooling, the polymer beads are separated from the aqueous phase obtained and washed quickly with water.

EXAMPLE 25

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose,, is introduced into a solution of 151.4 parts ^ divinylbenzene to 52.8%, 48.6 parts styrene, 2 parts of benzoyl peroxide and bromo-1 300 parts of butane. The mixture is heated with stirring to 80 °c

in 4 hours, is left at this temperature for 7 hours, then mounts the temperature to 90 °c in 2 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 26

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 151.4 parts of divinylbenzene to 52.8%, 48.6 parts styrene, 2 parts of benzoyl peroxide and 300' portions of diethyl sulfate. The mixture is heated with stirring in 2 hours at 70 °c, mounting the temperature in 1 hour to 80 °c, is left at this temperature for 15 hours and then heated to 90 °c during 1 hour. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 27

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 113.5 parts of divinylbenzene to 52.8%, 86.5 parts styrene, 2 parts of benzoyl peroxide and 300 parts of dipropylcétone. The mixture is heated with stirring 6 hours at 80 °c in, is left at this temperature for 9 hours, then rises the temperature to 90 °c in 2 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 28

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 240.6 parts of divinylbenzene to 52.8%, 47.4 parts styrene, 0.9 part of benzoyl peroxide and 210 dibutyldiglycol portions. The mixture is heated with stirring in 2 hours at 85 °c, allowed temperature for 12 hours, is subsequently mounted temperature to 95 °c in 2 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 29

In a mixture of 511 parts water and 44 parts of a 2.5% solution of methylcellulose, introduced a solution of 25.5 parts of divinylbenzene to 52.3%, 41.2 parts styrene, 0.7 part of benzoyl peroxide, 80 parts of phosphate tri-n-butyl and 20 parts of trioctylphosphine oxide. The mixture is heated with stirring in 2 and a half hours to 80 °c, is left at this temperature for 10 hours, and then mounts the temperature to 90 °c in 1 hour. After cooling, the polymer beads are separated from the aqueous phase thus obtained and washing them rapidly to the water.

EXAMPLE 30

In a mixture die 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 53.5 parts of divinylbenzene to 52.3%, 296.5 parts styrene, 2.5 parts of benzoyl peroxide, methyl isobutyl ketone and 146 parts 4 parts (thenoyl-to-2) -1 trifluoroacetic 3, 3, 3 acetone. The mixture is heated to 85 °c in 4 hours, allowed■8 hours at this temperature, the temperature is subsequently mounted to 95^C. C in 2 hours.

After cooling, the polymer beads are separated from the aqueous phase obtained and washing them rapidly with water,

EXAMPLE 31

In a mixture of 500 parts water and 40 parts of a solution

2.5% of methylcellulose, introduced a solution of 50.9 parts of divinylbenzene to 52.8%, 2.9 parts styrene, 0.5 part of azo bis isobutyronitrile, 80.3 parts of methyl isobutyl ketone and 0.5 part of didodecyl-to-Monosubstituted.

The mixture is heated with stirring to 80 °c in 7 hours, allowed temperature for 9 hours, is subsequently mounted temperature to 95 °c in 3 hours. After cooling, the polymer obtained is separated from the aqueous phase and washed quickly with water.

EXAMPLE 32■.

In a mixture of 500 parts water and 40 parts of a solution

2.5% of methylcellulose, introduced a solution of 33.1 parts of divinylbenzene to 52.8%, 36.9 parts styrene, 0.7 part of benzoyl peroxide, 100 parts of methyl isobutyl ketone and 5 parts of oxo-to-8 quinoline. The mixture is heated with stirring to 85 °c in 4 hours, allowed temperature for 13 hours, and then mounts the temperature to 90 °c in 1 hour. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 33

In a mixture of 500 parts water and 40 parts of a solution of 2.5% to méthylceliulose, introduced a solution of 32.7 parts of divinylbenzene to 52.8%, 36.6 parts styrene, 0.7 part of benzoyl peroxide, 100 parts of methyl isobutyl ketone and/0.38 portion has - (carbo methoxyanilino) - 7 - hydroxyquinoline/butyl benzyl phthalate. The mixture is heated with stirring in 3 hours to 80 °c, is left at this temperature for 12 hours, is subsequently mounted the temperature at 90 °c in 1 hour. After cooling, the polymer beads are separated from the aqueous phase obtained is washed - and rapidly with 1' water.

EXAMPLE 34

In a mixture of 1500 parts water and 130 parts of a solution

of méthylceliulose to 2.5%, is introduced into a solution of 57.4 parts of divinylbenzene to 52.3%, 242.6 parts styrene, 3 parts of benzoyl peroxide, 170 parts of white oil and 30 parts phosphate bis - (ethyl-2 hexyl).

The mixture is heated in 2 and one half hours to 83° g, is left at this temperature for 12 hours, is subsequently mounted temperature to 95 °c in 1 hour. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water,

EXAMPLE 35

In a mixture of 1500 parts water and 130 parts of a solution

of méthylceliulose to 2.5%, is introduced into a solution of 57.6 parts of divinylbenzene to 52.3%, 202.4 parts styrene, 2.5 parts of benzoyl peroxide, polypropylene oxide portions of 62.5, 125 parts oil and 62.5 parts octanol. Ôn heats the mixture by stirring in 2 hours at 80 °c, is left at this temperature for 13 hours, and then mounts the temperature to 90 °c in 1 hour. Separating the polymer beads obtained from the aqueous phase and washed quickly with water.

EXAMPLE 36

In a mixture of 1500 parts water and 130 parts of a solution

of méthylceliulose to 2.5%, is introduced into a solution of 19.1 parts of divinylbenzene to 52.3%, 80.9 parts styrene, 1 part of benzoyl peroxide and 400 parts of isoamyl acetate. The mixture is heated with stirring in 4 hours to 80 °c, is left at this temperature for 10 hours, and then mounts the temperature to 90° g in 1 hour. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 37

In a mixture of 1500 parts water and 130 parts of a solution

methylcellulose to 2.57 ", is introduced into a solution of 133.8 parts divinylbenzèhe to 52.37", 216.2 parts styrene, 3.5 parts of azo-to-bisisobutyronitrile, 75 parts trinonylamine and 75 parts of tetrachloro-1, 1, 2, 2 ethane. The mixture is heated with stirring to 80 °c in 7 hours, is left at this temperature for 10 hours, and then mounts the temperature to 90 °c in 1 hour.

After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

FOR EXAMPLE, 38

In a mixture of 1500 parts water and 130 parts of a solution

methylcellulose to 2.57 ", is introduced into a solution of 57.4 parts of divinylbenzene to 52.37", 42.6 parts styrene, 1 part of azo bis isobutyronitrile and 400 parts of methyl-2 quinoline. Is heated with stirring in 4 hours to 80 °c, is left at this temperature for 11 hours, is subsequently mounted temperature to 90 °c in 2 hours. After cooling, separating the polymer beads

- ^ held the aqueous phase and washed quickly with water.

EXAMPLE 39

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 305.9 parts of divinylbenzene to 52.37 ", 94.1 parts styrene, 4 parts of benzoyl peroxide and 100 parts of methyl para-toluenesulphonate. Is heated with stirring in 5 hours to 80 °c, is left at this temperature for 11 hours, is subsequently mounted temperature to 90 °c in 2 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 40

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 267.7 parts of divinylbenzene to 52.37 ", 82.3 parts styrene, 3.5 parts of benzoyl peroxide and methylcyclohexyl acetate 150 parts. The mixture is heated with stirring to 80 °c in 6 hours, allowed temperature for 11 hours, is subsequently mounted temperature to 90 °c in 2 hours. After cooling is separated from the beads of polymer obtained from the aqueous phase and washed quickly with

1 of¹ water,

EXAMPLE 41

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 191.2 parts of divinylbenzene to 52.3%, 58.8 parts styrene, 2.5 parts of benzoyl peroxide and 250 parts benzoate ethyl chloro-2. The mixture is heated with stirring to 80 °c in 3 hours, allowed during 5 hours at this temperature, and then

mounting the temperature to 90 °c in 5 hours. After cooling, the polymer beads are separated from the aqueous phase obtained is washed and rapidly with 1' water.

EXAMPLE 42

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 97.6 parts of divinylbenzene to 61.5%, 52.4 parts styrene, 1.5 part of benzoyl peroxide and 350 parts of diisopropyl ether. The mixture is heated with stirring to 80 °c in 4 hours, is left at this temperature for 5 hours, and then mounts the temperature to 90 °c in 5 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 43

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 352.2 parts of divinylbenzene to 61.5%, 74.8 parts styrene, 4 parts of benzoyl peroxide and 100 parts of ethyl salicylate. Heated " n-stirring at 80 °c in 5 hours, is left at this temperature for 5 hours then rises the temperature to 90 °c in 5 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 44

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 284.5 parts of divinylbenzene to 61.5%, 65.6 parts styrene, 3.5 parts of azo bis isobutyronitrile and 150 parts of méthyldivinylamine. The mixture is heated to 70 °c in 2 hours, allowed 8 hours at this temperature, followed by heating to 90 °c during 4 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 45

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 200.8 parts of divinylbenzene to 52.3%, 149.2 parts styrene, 6 parts of benzoyl peroxide, 75 parts of hydroxy-a 2 dodecyl 5 benzophenone oxime and 75 parts of white oil. Is heated with stirring to 85 °c in 4 hours, is left at this temperature for 10 hours, and then mounts the temperature to 95 °c in 1 hour.

After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 46

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 172.1 parts of divinylbenzene to 52.3%, 127.9 parts styrene, 6 parts of benzoyl peroxide, 100 parts of dodecyl 7 hydroxy 8 quinoline and 100 parts of white oil. The mixture is heated with stirring to 90 °c in 5 hours, allowed temperature for 12 hours. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 47

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 143.4 parts of divinylbenzene to 52.3%, 106.6 parts styrene, 2.5 parts of benzoyl peroxide, 125 parts of octyl-to-7 hydroxy 8 quinoline and 125 isododécaæ portions. The mixture is heated with stirring to 85^Ç C in 6 hours, is left at this temperature for 10 hours, and then mounts the temperature to 95 °c in 1 hour.

Separating the polymer beads obtained from the aqueous phase and washed quickly with water.

EXAMPLE 48

In a mixture of 1500 parts water and 130 parts of a 2.5% solution of methylcellulose, introduced a solution of 86.1 parts of divinylbenzene to 52.3%, 60.7 parts styrene, 3.2 parts acrylate

butyl, 1.5 part of benzoyl peroxide, 210 parts oil,

52.5 parts of dodecanol and 87.5 parts of a mixture of hydroxy-a 2 dodecyl 5 benzophenone oxime and diethyl-5.8 hydroxy 7 oxime derivatives reduce emissions and 6. The mixture is heated with stirring to 80 °c in 3 hours, is left at this temperature for 11 hours, is subsequently mounted temperature to 90 °c in 2 hours.

Àprès cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 49

In an autoclave containing a mixture of 1200 parts of water and 300 parts of a 2.5% solution of methylcellulose, introduced a solution of 97.1 parts of divinylbenzene to 61.8%, 202.9 parts styrene, 3 parts of benzoyl peroxide and 200 parts of phosphate tri-n-butyl. Stirring the mixture is heated to 80 °c, 1 hour is allowed at this temperature, mounting the temperature in 1 hour to 120 °c and is left at this temperature for 1 hour. During this time the pressure rises to 4 atmospheres. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

EXAMPLE 50

In an autoclave containing a mixture of 1200 ml of water and 300 ml of a 2.5% solution of methylcellulose, introduced a solution of 72.7 g of divinylbenzene to 61.8%, 77.3 g of styrene, 1.5 grams of azo bis isobutyronitrile and 350 g of tributyl amine. The mixture is heated with stirring to 70 °c, 1 hour is allowed during this temperature, is subsequently mounted temperature in 1 hour and a half to 140 °c and maintains this temperature for about 1/2 hour. The pressure rises to 5 atmospheres. After cooling, is separated from the beads of polymer obtained from the aqueous phase and washed quickly with water.

Of course various modifications may be made by those skilled in the relevant arts to the method just described solely by way of non-limiting example without departing from the scope of the invention.