RU95105686A - Process for purifying low molecular weight polyisobutylene - Google Patents
Process for purifying low molecular weight polyisobutyleneInfo
- 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
- Authority
- RU
- Russia
- Prior art keywords
- water
- polymerizate
- polymer
- low molecular
- volumetric
- Prior art date
Links
Landscapes
- 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)
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 |
Family
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 |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2096420C1 (en) |
Families Citing this family (2)
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 |
-
1995
- 1995-04-12 RU RU95105686A patent/RU2096420C1/en active
Also Published As
Publication number | Publication date |
---|---|
RU2096420C1 (en) | 1997-11-20 |
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