Phosphonic acid cross-linked hydrophilic copolymers
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United States of America Patent
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Apr 29, 1986
Grant Date -
N/A
app pub date -
Apr 9, 1984
filing date -
Apr 22, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Crosslinked copolymers wherein crosslinking is effected with crosslinking bridge members of the formula ##STR1## wherein R.sup.1 and R.sup.2 independently of one another are each hydrogen or alkyl with 1 to 4 carbon atoms and m represents a number from 0 to 6 are prepared by copolymerization of monomers with vinylphosphonic acid (ester)-anhydrides and the new crosslinked polymers according to the invention are suitable for the preparation of acid-soluble coatings and encapsulation materials.
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