RU95105686A - Process for purifying low molecular weight polyisobutylene - Google Patents

Process for purifying low molecular weight polyisobutylene

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Publication number
RU95105686A
RU95105686A RU95105686/04A RU95105686A RU95105686A RU 95105686 A RU95105686 A RU 95105686A RU 95105686/04 A RU95105686/04 A RU 95105686/04A RU 95105686 A RU95105686 A RU 95105686A RU 95105686 A RU95105686 A RU 95105686A
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RU
Russia
Prior art keywords
water
polymerizate
polymer
low molecular
volumetric
Prior art date
Application number
RU95105686/04A
Other languages
Russian (ru)
Other versions
RU2096420C1 (en
Inventor
В.И. Аксенов
А.И. Грищенко
Г.Н. Грунин
Н.А. Головина
И.П. Гольберг
В.И. Хлустиков
В.С. Ряховский
В.С. Бырихин
А.И. Несмелов
В.Б. Мурачев
В.Л. Золотарев
М.Д. Скловский
Original Assignee
Акционерное общество открытого типа "Ефремовский завод синтетического каучука"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Акционерное общество открытого типа "Ефремовский завод синтетического каучука" filed Critical Акционерное общество открытого типа "Ефремовский завод синтетического каучука"
Priority to RU95105686A priority Critical patent/RU2096420C1/en
Publication of RU95105686A publication Critical patent/RU95105686A/en
Application granted granted Critical
Publication of RU2096420C1 publication Critical patent/RU2096420C1/en

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  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerization Catalysts (AREA)

Abstract

FIELD: chemistry of polymers. SUBSTANCE: claimed invention describes techniques for removing catalyst remnants from low molecular polyisobutylene produced in the presence of titanium halides and aluminium trialkyl in hydrocarbon solvents, and polymer proper is used as dopants (during or after modification to motor and diesel oil for manufacture of adhesives and for other purposes. The claimed process is carried out in two stages. At first stage polymer hydrocarbon solution is washed with acidified water at pH of 1-5 at temperatures from 20 to 50 C and volumetric ratio of polymerizate to water within 0.5 to 1.0, and at second stage, with water at pH of 7.0+-0.5 at volumetric polymerizate to water ratio of 0.75-1.0 at temperatures from 50 to 80 C followed by separating the phases and keeping polymerizate at the same temperature for at least 20 minutes. The claimed invention makes it possible to produce polymer substantially containing no catalyst remnants and completely cohorless and transparent. EFFECT: more efficient purification process.

Claims (1)

Изобретение относится к технике удаления остатков катализатора из низкомолекулярного полиизобутилена, получаемого в присутствии галогенидов титана и триалкилалюминия в углеводородных растворителях, а сам полимер используется в качестве присадок (непосредственно или после модификации) к моторным и дизельным маслам, для изготовления клея и других целей. Сущность изобретения: решения состоит в том, что процесс очистки проводят в две стадии, на первой из которых углеводородный раствор полимера отмывают подкисленной водой с рН 1-5 при температуре 20-50oС и объемном отношении полимеризат : вода в пределах 0,5 - 1,0, а на второй - водой с рН 7,0±0,5 при объемном отношении фаз полимеризат : вода 0,75 - 1,0 при 50-80oС с последующим разделением фаз и выдержкой полимеризата при той же температуре по крайней мере 20 мин. Предлагаемое изобретение позволяет получать полимер, практически не содержащий остатков катализатора и полностью бесцветный и прозрачный.The invention relates to techniques for removing catalyst residues from low molecular weight polyisobutylene obtained in the presence of titanium and trialkylaluminium halides in hydrocarbon solvents, and the polymer itself is used as additives (directly or after modification) to motor and diesel oils, for the manufacture of glue and other purposes. The essence of the invention: the solution lies in the fact that the cleaning process is carried out in two stages, in the first of which the hydrocarbon polymer solution is washed with acidified water with a pH of 1-5 at a temperature of 20-50 o C and a volumetric ratio of polymerizate: water in the range of 0.5 - 1.0, and in the second, with water with a pH of 7.0 ± 0.5 at a volumetric phase ratio of polymerizate: water 0.75 - 1.0 at 50-80 o C, followed by phase separation and exposure of the polymerizate at the same temperature at least 20 minutes The present invention allows to obtain a polymer that is practically free of catalyst residues and completely colorless and transparent.
RU95105686A 1995-04-12 1995-04-12 Method of removing catalyst remnants from polyisobutylene RU2096420C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95105686A RU2096420C1 (en) 1995-04-12 1995-04-12 Method of removing catalyst remnants from polyisobutylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95105686A RU2096420C1 (en) 1995-04-12 1995-04-12 Method of removing catalyst remnants from polyisobutylene

Publications (2)

Publication Number Publication Date
RU95105686A true RU95105686A (en) 1997-01-10
RU2096420C1 RU2096420C1 (en) 1997-11-20

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ID=20166694

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95105686A RU2096420C1 (en) 1995-04-12 1995-04-12 Method of removing catalyst remnants from polyisobutylene

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RU (1) RU2096420C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2019844B1 (en) * 2006-05-17 2013-09-11 The University of Akron Method of purifying block copolymers
RU2523799C1 (en) * 2011-12-20 2014-07-27 Чайна Петролеум Энд Кемикал Корпорейшн Additive and method of terminating polymerisation and/or reducing viscosity of polymer solution

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Publication number Publication date
RU2096420C1 (en) 1997-11-20

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