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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
10-11-2016 дата публикации

Densified Cellulose Ester Pellets

Номер: US20160326343A1
Автор: Abhishek Ambekar, Naresh Budhavaram, Richard F. Gregory, AMBEKAR ABHISHEK, BUDHAVARAM NARESH, GREGORY RICHARD F, Ambekar Abhishek, Budhavaram Naresh, Gregory Richard F.
Принадлежит:

A process for preparing densified cellulose ester pellets with reduced clumping or taking comprises mixing a cellulose ester flake or powder and plasticizer to form a blend and directing the blend to a pellet mill. The densified pellets retain the mechanical properties of the cellulose ester flake or powder. An additive may be introduced to the blend or to the pellet mill to reduce downstream compounding steps. The pellets may be stored without clumping, thus reducing processing steps and increasing yield. 1. A process for densifying cellulose ester flake , the process comprising:a) mixing cellulose ester flake with a plasticizer to form a blend, wherein the blend comprises from 5 to 50 wt. % plasticizer; andb) feeding the blend through a pellet mill to form densified cellulose acetate pellet;wherein forming the cellulose acetate pellet generates heat;wherein the cellulose ester pellets exit the pellet mill at a temperature from 40 to 100° C.; andwherein the pellet is storage stable for at least 24 hours at room temperature and 30 to 35% humidity.2. The process of claim 1 , wherein the feeding of the blend through the pellet mill is gravimetric.3. The process of claim 1 , wherein no heat input is used for the pellet mill.4. The process of claim 1 , wherein step b) further comprises cooling the pellet after it exits the pellet mill.5. The process of claim 1 , wherein the plasticizer is selected from the group consisting of triacetin claim 1 , trimethyl phosphate claim 1 , triethyl phosphate claim 1 , tributyl phosphate claim 1 , triphenyl phosphate claim 1 , triethyl citrate claim 1 , acetyl trimethyl citrate claim 1 , acetyl triethyl citrate claim 1 , acetyl tributyl citrate claim 1 , dibutyl phthalate claim 1 , diaryl phthalate claim 1 , diethyl phthalate claim 1 , dimethyl phthalate claim 1 , di-2-methoxyethyl phthalate claim 1 , di-octyl phthalate (and isomers) claim 1 , dibutyl tartrate claim 1 , ethyl o-benzoylbenzoate claim 1 , ethyl phthalyl ethyl glycolate ...

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Номер записи: 1
12-02-2015 дата публикации

Cellulose Acetate Table Tennis Balls and Processes for Making

Номер: US20150045161A1
Автор: Budhavaram Naresh, Combs Michael T., GAO Yu, Gou Zeming, LI Jiawei, Li Rongfu, Pan Kevin
Принадлежит:

The present invention is directed to cellulose acetate table tennis balls and to processes for forming the cellulose acetate table tennis balls. Cellulose acetate may be provided as a flake or powder and then may be melt extruded to a sheet or pellet. The sheet may be soaked and a plurality of coupons may then be cut from the sheet. The coupons may be melt extruded to form hemispheres and then two hemispheres may be adhered to each other to form a sphere. The pellets may be injection molded to form hemispheres and then two hemispheres may be adhered to each other to form a sphere. The cellulose acetate table tennis balls are free of celluloid but meet the International Table Tennis Federation standards for table tennis balls. 1. A process for manufacturing table tennis balls , comprising:(a) mixing cellulose acetate and a plasticizer to form a mixture;(b) melt extruding the mixture in a film die to form an extruded sheet;(c) soaking the extruded sheet in a solvent to form a soaked sheet;(d) cutting a plurality of coupons from the soaked sheet;(e) thermoforming the coupons into hemispheres; and(f) adhering pairs of hemispheres to form the table tennis balls.2. The process of claim 1 , wherein the solvent is selected from the group consisting of water claim 1 , one or more alcohols claim 1 , and combinations thereof.3. The process of claim 1 , wherein the plasticizer is selected from the group consisting of triacetin claim 1 , tributyl citrate claim 1 , triethyl citrate claim 1 , dimethyl phthalate claim 1 , diethyl phthalate claim 1 , bornan-2-one claim 1 , PEG-DGE claim 1 , PPG-DGE claim 1 , tributyl phosphate claim 1 , and combinations thereof.4. The process of claim 1 , wherein the mixture further comprises an antioxidant selected from the group consisting of stearyl 3-(3 claim 1 ,5-di-tert-butyl-4-hydroxyphenyl) propionate claim 1 , bis(2 claim 1 ,4-dicumylphenyl)pentaerythritol diphosphite claim 1 , tris(2 claim 1 ,4-di-tert-butylphenyl)phosphite claim 1 , ...

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Номер записи: 2
25-02-2016 дата публикации

ANTI-FOG CONSUMER PRODUCTS AND PROCESSES FOR MAKING SAME

Номер: US20160053152A1
Автор: Budhavaram Naresh, Collins Marilyn, Combs Michael, LU Bing, Marshall Joanna, McGrady Christopher, Palyam Nagarjuna, Parker Kevin
Принадлежит:

A process for producing an anti-fog consumer product. The process comprises the steps of forming a precursor composition comprising cellulose acetate and plasticizer to yield a substantially rigid consumer product having an outer surface; and saponifying at least a portion of the substantially rigid consumer product to yield the anti-fog consumer product having a degree of substitution at the outer surface of less than 0.75. 1. A process for producing an anti-fog consumer product , the process comprising the steps of:(a) forming a precursor composition comprising cellulose acetate and plasticizer to yield a substantially rigid consumer product having an outer surface; and(b) saponifying at least a portion of the substantially rigid consumer product to yield the anti-fog consumer product having a degree of substitution at the outer surface of less than 0.75.2. The process of claim 1 , wherein the degree of substitution increases inwardly from the outer surface.3. The process of claim 1 , wherein step (b) forms a treated central region beneath the outer surface and wherein the degree of substitution throughout the treated central region is substantially uniform.4. The process of claim 1 , wherein the substantially rigid consumer product has a thickness greater than 50 microns.5. The process of claim 1 , further comprising the steps of:hard coating the anti-fog consumer product to form a coated anti-fog consumer product; andmirror coating the coated anti-fog consumer product to form a mirror coated consumer product.6. The process of claim 1 , further comprising the step of:coloring the anti-fog consumer product to yield a colored anti-fog consumer product,wherein the coloring preferably comprises dip dying the anti-fog consumer product.7. An anti-fog consumer product claim 1 , comprising cellulose acetate claim 1 , preferably from 40 wt % to 99 wt % cellulose acetate claim 1 , and a plasticizer claim 1 , preferably from 1 wt % to 60 wt % plasticizer claim 1 , and ...

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Номер записи: 3
10-03-2016 дата публикации

CELLULOSE ESTER PLASTICS AND METHODS AND ARTICLES RELATING THERETO

Номер: US20160068656A1
Автор: Bisset Wendy C., Budhavaram Naresh, Collins Marilyn T., Combs Michael, Larkin Adam, LU Bing, Mazahir Syed, McGrady Christopher, Milward Niebla Lizbeth, Palyam Nagarjuna
Принадлежит: Celanese Acetate LLC

Cellulose ester plastics may be formulated to have a depressed melt processing temperatures, improved heat resistance, increased mechanical stability, or some combination thereof. For example, in some instances, a cellulose ester plastic comprising: a cellulose ester at about 20% to about 90% by weight of the cellulose ester plastic; and a plasticizer that comprises a carbonate ester, a polyol benzoate, or both, wherein the plasticizer is at about 2% to about 40% by weight of the cellulose ester plastic, wherein the cellulose ester plastic is melt processable. 1. A cellulose ester plastic comprising:a cellulose ester at about 20% to about 90% by weight of the cellulose ester plastic; anda plasticizer that comprises a carbonate ester, a polyol benzoate, or both, wherein the plasticizer is at about 2% to about 40% by weight of the cellulose ester plastic,wherein the cellulose ester plastic is melt processable.2. The cellulose ester plastic of further comprising: a polyolefin at about 1% to about 75% by weight of the cellulose ester plastic.3. The cellulose ester plastic of claim 2 , wherein the cellulose ester is at about 20% to about 30% by weight of the cellulose ester plastic claim 2 , the plasticizer is at about 2% to about 10% by weight of the cellulose ester plastic claim 2 , and the polyolefin is at about 50% to about 75% by weight of the cellulose ester plastic4. The cellulose ester plastic of further comprising: a compatibilizer at about 0.1% to about 20% by weight of the cellulose ester plastic.5. The cellulose ester plastic of consisting of the cellulose ester at about 20% to about 85% by weight of the cellulose ester plastic and the carbonate ester at about 15% to about 40% by weight of the cellulose ester plastic.6. The cellulose ester plastic of consisting of the cellulose ester at about 20% to about 85% by weight of the cellulose ester plastic and the polyol benzoate at about 15% to about 40% by weight of the cellulose ester plastic.7. The cellulose ...

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Номер записи: 4
10-03-2016 дата публикации

CELLULOSE ESTER PLASTICS AND METHODS AND ARTICLES RELATING THERETO

Номер: US20160068665A1
Автор: Ambekar Abhishek, Bisset Wendy C., Budhavaram Naresh, Collins Marilyn T., Combs Michael, Larkin Adam, LU Bing, Mazahir Syed, McGrady Christopher, Milward Niebla Lizbeth, Palyam Nagarjuna
Принадлежит: Celanese Acetate LLC

Cellulose ester plastics may be formulated to have a depressed melt processing temperatures, improved heat resistance, increased mechanical stability, or some combination thereof. For example, in some instances, a cellulose ester plastic may include a plasticized cellulose ester at about 1% to about 99% by weight of the cellulose ester plastic, the plasticized cellulose ester consisting of a cellulose ester at about 60% to about 90% by weight of the plasticized cellulose ester and a plasticizer at about 10% to about 40% by weight of the plasticized cellulose ester, wherein the plasticizer comprises a carbonate ester, a polyol benzoate, or both; and a thermoplastic polymer at about 1% to about 99% by weight of the cellulose ester plastic; and wherein the cellulose ester plastic is melt processable. 1. A cellulose ester plastic comprising:a plasticized cellulose ester at about 1% to about 99% by weight of the cellulose ester plastic, the plasticized cellulose ester consisting of a cellulose ester at about 60% to about 90% by weight of the plasticized cellulose ester and a plasticizer at about 10% to about 40% by weight of the plasticized cellulose ester, wherein the plasticizer comprises a carbonate ester, a polyol benzoate, or both; anda thermoplastic polymer at about 1% to about 99% by weight of the cellulose ester plastic; andwherein the cellulose ester plastic is melt processable.2. The cellulose ester plastic of claim 1 , wherein the plasticizer comprises a carbonate ester claim 1 , a polyol benzoate claim 1 , or both.3. The cellulose ester plastic of claim 2 , wherein the plasticizer further comprises at least one other plasticizer selected from the group consisting of: triacetin claim 2 , trimethyl phosphate claim 2 , triethyl phosphate claim 2 , tributyl phosphate claim 2 , triphenyl phosphate claim 2 , triethyl citrate claim 2 , acetyl trimethyl citrate claim 2 , acetyl triethyl citrate claim 2 , acetyl tributyl citrate claim 2 , tributyl-o-acetyl citrate ...

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Номер записи: 5
07-07-2016 дата публикации

Melt Electrospun Fibers Containing Micro and Nanolayers and Method of Manufacturing

Номер: US20160194796A1
Автор: Budhavaram Naresh, Joseph Eugene G., Mahajan Roop
Принадлежит:

Fibers having two or more alternating polymer layers are formed by co-extrusion followed by electroprocessing. The fibers can be used as a non-woven mat or other substrate for a variety of applications. Delamination of the fibers using ultrasonication yields separated, micro and nanolayer, fiber ribbons which may also be used a non-woven mat or other substrate. 127-. (canceled)28. A method of producing ribbon shaped fibers or a fibrous substrate which includes ribbon shaped fibers , comprising the steps of:co-extruding two or more polymers;producing a fiber containing a plurality of alternating layers of two or more different polymers from the co-extruded polymers; anddelaminating the fiber to yield fiber ribbons of individual polymers co-extruded in said co-extruding step.29. The method of claim 28 , wherein the co-extruded polymers are electroprocessed in said producing step to produce said fiber containing a plurality of alternating layers of two or more different polymers and wherein said fiber has a diameter of 50 μm or less.30. The method of claim 29 , wherein said electroprocessing and delaminating steps are performed under conditions which produce a fibrous substrate configured as a non-woven.31. The method of claim 28 , wherein said fiber has a diameter of 10 μm or less.32. The method of claim 28 , wherein said fiber has at least three layers.33. The method of claim 28 , wherein said fiber has at least 50 layers.34. The method of claim 28 , wherein said delaminating step is performed by sonication of said fiber.35. The method of claim 28 , wherein said delaminating step is performed by chemical exposure of said fiber.36. The method of claim 28 , wherein said delaminating step is performed by sonication and chemical exposure of said fiber.37. The method of claim 28 , further comprising depositing a bioactive agent on said fiber ribbons.38. The method of claim 28 , further comprising depositing a catalytic agent on said fiber ribbons.39. The method of claim ...

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Номер записи: 6
04-12-2014 дата публикации

Melt Electrospun Fibers Containing Micro and Nanolayers and Method of Manufacturing

Номер: US20140357144A1
Автор: Budhavaram Naresh, Joseph Eugene G., Mahajan Roop
Принадлежит:

Fibers having two or more alternating polymer layers are formed by co-extrusion followed by electroprocessing. The fibers can be used as a non-woven mat or other substrate for a variety of applications. Delamination of the fibers using ultrasonication yields separated, micro and nanolayer, fiber ribbons which may also be used a non-woven mat or other substrate. 1. A co-extruded , electroprocessed fiber containing a plurality of alternating layers of two or more different polymers , wherein said fiber has a diameter of 50 μm or less and has at least 50 layers.2. The co-extruded claim 1 , electroprocessed fiber of wherein said fiber has a diameter of 10 μm or less.3. A fibrous substrate claim 1 , comprising a plurality of co-extruded claim 1 , electroprocessed fibers containing a plurality of alternating layers of two or more different polymers claim 1 , wherein said fiber has a diameter of 50 μm or less and has at least 50 layers.4. The fibrous substrate of wherein said co-extruded claim 3 , electroprocessed fibers have a diameter of 10 μm or less.5. The fibrous substrate of configured as a non-woven.6. The fibrous substrate of further comprising a bioactive agent deposited on said substrate.7. The fibrous substrate of further comprising a catalytic agent deposited on said substrate.8. The fibrous substrate of further comprising a fire or flame retardant deposited on said substrate.9. A fibrous substrate claim 3 , produced by the process of:co-extruding two or more polymers;electroprocessing the co-extruded polymers to produce a fiber containing a plurality of alternating layers of two or more different polymers, wherein said fiber has a diameter of 50 μm or less; anddelaminating the fiber to yield fiber ribbons of individual polymers co-extruded in said co-extruding step.10. The fibrous substrate of wherein said delaminating step is performed by sonication of said fiber.11. The fibrous substrate of configured as a non-woven.12. The fibrous substrate of further ...

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Номер записи: 7
29-10-2015 дата публикации

DRUG DELIVERY VEHICLES COMPRISING CELLULOSE DERIVATIVES, STARCH DERIVATIVES, AND COMBINATIONS THEREOF

Номер: US20150306230A1
Автор: BISSET Wendy, Budhavaram Naresh, Combs Michael, Larkin Adam, Milward Lizbeth
Принадлежит: Celanese Acetate LLC

A drug delivery vehicle (e.g., a patch, a pill, an intravaginal ring, and an implant) may include a polymer matrix comprising a plasticizer and at least one selected from the group consisting of: a cellulose ester, a cellulose ether, a starch ester, a starch ether, and a combination thereof. A drug may be dispersed in the polymer matrix, in another portion of the drug delivery vehicle, or both. 1. A drug delivery vehicle comprising:an intermediate layer comprising a drug disposed between an adhesive and a backing, wherein one of the intermediate layer and the adhesive are formed by a polymeric matrix that comprises a plasticizer and at least one selected from the group consisting of: a cellulose ester, a cellulose ether, a starch ester, a starch ether, and a combination thereof.2. The drug delivery vehicle of claim 1 , wherein the adhesive comprises the polymeric matrix and the plasticizer is in the polymeric matrix at about 15% or greater by weight of the polymeric matrix.3. The drug delivery vehicle of claim 1 , wherein the intermediate layer comprises the polymeric matrix and the polymeric matrix consists essentially of the plasticizer claim 1 , the drug claim 1 , and the at least one selected from the group consisting of: a cellulose ester claim 1 , a cellulose ether claim 1 , a starch ester claim 1 , a starch ether claim 1 , and a combination thereof.4. The drug delivery vehicle of claim 1 , wherein the polymeric matrix comprises the at least one selected from the group consisting of: the cellulose ester claim 1 , the cellulose ether claim 1 , the starch ester claim 1 , the starch ether claim 1 , and the combination thereof at about 10% to about 80% by weight of the polymeric matrix.5. The drug delivery vehicle of claim 1 , wherein the polymeric matrix further comprises at least one selected from the group consisting of: a polyolefin claim 1 , an ethylene copolymer claim 1 , a thermoplastic polyurethane claim 1 , an acrylic acid polymer claim 1 , ...

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Номер записи: 8
29-10-2015 дата публикации

ADHESIVES THAT INCLUDE HIGHLY-PLASTICIZED CELLULOSE ESTERS AND METHODS AND ARTICLES RELATING THERETO

Номер: US20150307754A1
Автор: BISSET Wendy, Budhavaram Naresh, Combs Michael, Larkin Adam, Milward Lizbeth
Принадлежит: Celanese Acetate LLC

Adhesives may include a base polymer composition, optionally a tackifying resin, optionally a wax, and optionally additives (e.g., plasticizers, fillers, antioxidants, and the like, and combinations thereof), where the base polymer comprises a highly plasticized cellulose ester and optionally polymers traditionally used in pressure sensitive adhesives, hot melt pressure sensitive adhesives, or hot melt adhesives (e.g., ethylene vinyl acetate copolymers, polysiloxanes, and polyurethanes). 1. An adhesive comprising:a base polymer composition that includes a highly plasticized cellulose ester and an additional polymer, the highly plasticized cellulose ester at about 1% to about 99% by weight of the base polymer, the additional polymer at about 1% to about 99% by weight of the base polymer, the highly plasticized cellulose ester comprising a cellulose ester and a plasticizer at about 15% or greater by weight of the highly plasticized cellulose ester, and the additional polymer being selected from the group consisting of a polyolefin, a polyalphaolefin, a polyester, an ethylene vinyl acetate copolymer, a polyvinyl acetate, a polyvinyl alcohol, a polyethyleneimine, a polyacrylate, a polymethacrylate, a polyacrylamide, a polyacrylonitrile, a polyimide, a polyamide, polyvinyl chloride, a polysiloxane, a polyurethane, polystyrene, a polyetheramide copolymer, a styrene-butadiene copolymer, a styrene-butadiene-styrene copolymer, a styrene-isoprene-styrene copolymer, a styrene-ethylene-butylene-styrene copolymer, a styrene-ethylene-propylene-styrene copolymer, butyl rubber, polyisobutylene, a isobutylene-isoprene copolymer, an acrylic, a nitrile, and a combination thereof.2. The adhesive of further comprising:a tackifying resin.3. The adhesive of claim 2 , wherein the tackifying resin is present in an amount of at about 1% to about 70% by weight of the adhesive.4. The adhesive of further comprising:about 5% or less of a tackifying resin by weight of the adhesive.5. The adhesive ...

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Номер записи: 9
17-12-2015 дата публикации

ADHESIVES THAT INCLUDE HIGHLY-PLASTICIZED CELLULOSE ESTERS AND METHODS AND ARTICLES RELATING THERETO

Номер: US20150361310A1
Автор: BISSET Wendy, Budhavaram Naresh, Combs Michael, Larkin Adam, Milward Lizbeth
Принадлежит: Celanese Acetate LLC

In some instances, adhesives may include a cellulose ester and a plasticizer in an amount of about 15% or greater by weight of the adhesive, wherein the plasticizer comprises a nonionic surfactant. In some instances, adhesives may include a cellulose ester and a mixture of two or more plasticizers in an amount of about 15% or greater by weight of the adhesive, wherein a melt flow index of the adhesive melt is greater than comparable adhesive melts that comprise the cellulose ester and only one of the plasticizers at the same amount. 1. An adhesive comprising:a cellulose ester; anda plasticizer in an amount of about 15% or greater by weight of the adhesive, wherein the plasticizer comprises a nonionic surfactant.2. The adhesive of claim 1 , wherein the plasticizer is at about 40% or greater by weight of the adhesive.3. The adhesive of claim 2 , wherein the adhesive is tacky at room temperature.4. The adhesive of claim 1 , wherein the surfactant comprises at least one selected from the group consisting of a polysorbate claim 1 , a sorbitan ester claim 1 , a polyethoxylated aromatic hydrocarbon claim 1 , a polyethoxylated fatty acid claim 1 , a polyethoxylated fatty alcohol claim 1 , a fluorosurfactant claim 1 , a glucoside claim 1 , a nonionic surfactant with C-Calkyl tail and a hydrophilic head group with hydroxyl and ester groups claim 1 , and any combination thereof.5. The adhesive of claim 1 , wherein the adhesive has a glass transition temperature between about −75° C. and about 190° C.6. The adhesive of claim 1 , wherein the adhesive has no detectable glass transition temperature above about −75° C.8. The adhesive of claim 1 , wherein the mixture of two or more plasticizers comprises at least one selected from the group consisting of: triacetin claim 1 , trimethyl phosphate claim 1 , triethyl phosphate claim 1 , tributyl phosphate claim 1 , triphenyl phosphate claim 1 , triethyl citrate claim 1 , acetyl trimethyl citrate claim 1 , acetyl triethyl citrate claim 1 ...

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Номер записи: 10
27-06-2013 дата публикации

Melt electrospun fibers containing micro and nanolayers and method of manufacturing

Номер: WO2013096095A1
Автор: Eugene G. Joseph, Naresh BUDHAVARAM, Roop MAHAJAN
Принадлежит: Virginia Tech Intellectual Properties, Inc.

Fibers having two or more alternating polymer layers are formed by co-extrusion followed by electroprocessing. The fibers can be used as a non-woven mat or other substrate for a variety of applications. Delamination of the fibers using ultrasonication yields separated, micro and nanolayer, fiber ribbons which may also be used a non- woven mat or other substrate.

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Номер записи: 11
25-02-2016 дата публикации

Anti-fog consumer products and processes for making same

Номер: CA2958565A1
Автор: Bing Lu, Christopher Mcgrady, Joanna MARSHALL, Kevin Parker, Marilyn COLLINS, Michael Combs, Nagarjuna Palyam, Naresh BUDHAVARAM
Принадлежит: Celanese Acetate LLC

A process for producing an anti-fog consumer product. The process comprises the steps of forming a precursor composition comprising cellulose acetate and plasticizer to yield a substantially rigid consumer product having an outer surface; and saponifying at least a portion of the substantially rigid consumer product to yield the anti-fog consumer product having a degree of substitution at the outer surface of less than 0.75.

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Номер записи: 12
17-12-2015 дата публикации

Adhesives that include highly-plasticized cellulose esters and methods and articles relating thereto

Номер: WO2015191525A1
Автор: Adam Larkin, Lizbeth Milward, Michael Combs, Naresh BUDHAVARAM, Wendy Bisset
Принадлежит: Celanese Acetate LLC

In some instances, adhesives may include a cellulose ester and a plasticizer in an amount of about 15% or greater by weight of the adhesive, wherein the plasticizer comprises a nonionic surfactant. In some instances, adhesives may include a cellulose ester and a mixture of two or more plasticizers in an amount of about 15% or greater by weight of the adhesive, wherein a melt flow index of the adhesive melt is greater than comparable adhesive melts that comprise the cellulose ester and only one of the plasticizers at the same amount.

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Номер записи: 13
15-08-2017 дата публикации

Anti-fog consumer products and processes for making same.

Номер: MX2017002207A
Автор: Budhavaram Naresh, Collins Marilyn, Combs Michael, LU Bing, Marshall Joanna, McGrady Christopher, Palyam Nagarjuna, Parker Kevin
Принадлежит: Celanese Acetate LLC

Un proceso para la producción de un producto antiempañante para el consumidor. El proceso comprende los pasos de formar una composición precursora, la cual comprende acetato de celulosa y plastificante, con el fin de proporcionar un producto para el consumidor sustancialmente rígido que tiene una superficie externa; y saponificar cuando menos una porción del producto para el consumidor sustancialmente rígido con el fin de proporcionar el producto antiempañante para el consumidor que tiene un grado de sustitución en la superficie externa de menos de 0.75.

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Номер записи: 14