Colorless, purified polymerizable composition useful for the production of crosslinked polyvinylpyrrolidone
AssigneeISP Investments Inc.
InventorsSusan Y. Tseng, Philip F. Wolf
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Abstract
What is provided herein is a colorless, purified polymerizable composition useful for the production of crosslinked polyvinylpyrrolidone. The polymerizable composition includes about 74-96% by weight vinylpyrrolidone monomer and 4-26% by weight of the isomeric compound 1-vinyl-3(E)-ethylidene pyrrolidone as crosslinker. The polymerizable composition is used to make crosslinked polyvinylpyrrolidone rapidly upon heating the composition at about 80.degree.-120.degree. C. in the absence of base.
Claims2
A colorless, purified polymerizable composition consisting essentially of about 74-96% by weight of vinylpyrrolidone and about 4-26% by weight of 1-vinyl-3 (E)-ethylidene pyrrolidone.
Dependencies are inferred from the claim text.