SU362030A1 - METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS - Google Patents
METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALSInfo
- Publication number
- SU362030A1 SU362030A1 SU1159749A SU1159749A SU362030A1 SU 362030 A1 SU362030 A1 SU 362030A1 SU 1159749 A SU1159749 A SU 1159749A SU 1159749 A SU1159749 A SU 1159749A SU 362030 A1 SU362030 A1 SU 362030A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- polyvinilketals
- soluble
- obtaining water
- water
- obtaining
- Prior art date
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
1one
Известен способ получени водонерастворимых поливинилкеталей конденсацией лоливинилового спирта с циклическими кетонамп в водной среде в присутствии кислых катализаторов с изменением температуры по стади м.A known method for producing water-insoluble polyvinyl ketals by condensation of lolivinyl alcohol with cyclic ketones in an aqueous medium in the presence of acidic catalysts with temperature changes in stages.
Известный способ не позвол ет получать поливинилкетали в виде тоикого порошка со стандартной пониженной в зкостью.The known method does not allow polyvinyl ketali to be obtained as a single powder with a standard reduced viscosity.
С целью получени продукта в виде топкого порошка со стандартной пониженной в зкостью растворов по предлагаемому способуIn order to obtain a product in the form of a fired powder with a standard reduced viscosity of solutions according to the proposed method
провод т реакцпю в водной среде при посто нной температуре 30-50°С.the reaction is carried out in an aqueous medium at a constant temperature of 30-50 ° C.
Иредмет изобретени Iredmet invention
Способ получени водонерастворимых ноливннилкеталей конденсацией поливинилового спирта с циклическими кетонами в водной среде в присутствии кислых катализаторов, отличающийс тем, что, с целью повышени качества продукта, процесс осушествл ют при посто нной температуре 30-50°Г..The method of obtaining water-insoluble nitrivyl ketalsal by condensation of polyvinyl alcohol with cyclic ketones in an aqueous medium in the presence of acidic catalysts, characterized in that, in order to improve product quality, the process is carried out at a constant temperature of 30-50 ° Г
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1159749A SU362030A1 (en) | 1967-05-29 | 1967-05-29 | METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1159749A SU362030A1 (en) | 1967-05-29 | 1967-05-29 | METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS |
Publications (1)
Publication Number | Publication Date |
---|---|
SU362030A1 true SU362030A1 (en) | 1972-12-13 |
Family
ID=20440653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1159749A SU362030A1 (en) | 1967-05-29 | 1967-05-29 | METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU362030A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0647660A2 (en) * | 1993-10-07 | 1995-04-12 | Daicel Chemical Industries, Ltd. | Novel lactone-modified polyvinyl, acetal resin, process for the preparation thereof, curable resin composition, and a magnetic recording medium |
-
1967
- 1967-05-29 SU SU1159749A patent/SU362030A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0647660A2 (en) * | 1993-10-07 | 1995-04-12 | Daicel Chemical Industries, Ltd. | Novel lactone-modified polyvinyl, acetal resin, process for the preparation thereof, curable resin composition, and a magnetic recording medium |
EP0647660A3 (en) * | 1993-10-07 | 1995-06-28 | Daicel Chem | Novel lactone-modified polyvinyl, acetal resin, process for the preparation thereof, curable resin composition, and a magnetic recording medium. |
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