SU362030A1 - METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS - Google Patents

METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS

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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
Application number
SU1159749A
Other languages
Russian (ru)
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.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1159749A priority Critical patent/SU362030A1/en
Application granted granted Critical
Publication of SU362030A1 publication Critical patent/SU362030A1/en

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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

SU1159749A 1967-05-29 1967-05-29 METHOD OF OBTAINING WATER-SOLUBLE POLYVINILKETALS SU362030A1 (en)

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

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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)

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SU (1) SU362030A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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