Prepolymers containing phosphororganic compounds and uses thereof
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United States of America Patent
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Issued Date -
Oct 5, 2006
app pub date -
Apr 5, 2006
filing date -
Apr 5, 2005
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Abandoned
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Abstract
The present invention relates to prepolymers produced by reacting resins with phosphororganic compounds obtained from phosphinic acid derivatives, and their use for producing flame resistant polymers, in particular duromers, and the polymers produced therewith. In particular, the present invention relates to a prepolymer for flame resistant polymers, particularly duromers, which is obtained by reacting at least one phosphinic acid derivative of formula I (R.sup.1O)(R.sup.2)P(O)--R.sup.3, wherein R.sup.1 and R.sup.2 independently of one another represent an optionally substituted alkyl, aryl, arylalkyl, alkylaryl or alkylarylalkyl group with 1 to 20 carbon atoms, R.sup.3 represents hydrogen or an optionally substituted alkyl, aryl, arylalkyl, alkylaryl or alkylarylalkyl group with 1 to 20 carbon atoms, with at least one resin preferably selected from the group consisting of an epoxy resin, cyanate resin, an unsaturated polyester, vinyl ester, phenol resin and a bismaleimide.
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