Thermoplastic hydrogels

Thermoplastic hydrogels are prepared by making condensation polymers of spirolactones of the formula: with a difunctional compound capable of opening the lactone rings. The thermoplastic hydrogels can be cross-linked. In the formula the total of n and m and also of n' and m' is 2 to 5 and...

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Bibliographic Details
Main Authors COWSAR; DONALD ROY, TANQUARY; ALBERT CHARLES
Format Patent
LanguageEnglish
Published 20.12.1977
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Thermoplastic hydrogels are prepared by making condensation polymers of spirolactones of the formula: with a difunctional compound capable of opening the lactone rings. The thermoplastic hydrogels can be cross-linked. In the formula the total of n and m and also of n' and m' is 2 to 5 and the R groups are H or hydrocarbyl with not over 3 R groups being hydrocarbyl. Most preferably all R groups are H and n, m, n' and m' are all 1.
Bibliography:Application Number: US19760704888