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US 5,456,984 AGranted
Halogen-free radiation curable flame retardant compositions
AssigneeDSM Desotech, Inc.
InventorsTimothy E. Bishop, Erwin S. Poklacki
Life of this patent
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Abstract
A halogen-free radiation curable flame retardant composition that comprises an end-capped oligomer of a phosphonate polyol and a polyisocyanate and an organic monomer.
Claims17
A essentially halogen-free UV radiation or electron beam curable composition suitable for producing a flame retardant polymer, which comprises:
- an oligomer which is the reaction product of a polyisocyanate and phosphonate polyol, said oligomer being end-capped by at least one monohydroxy functional compound with ethylenic unsaturation;
- and an organic monomer;
- said polyol being having the formula:
- ##STR5## wherein R.sub.1 and R.sub.3 are independently C.sub.1 to C.sub.18 alkyl or aryl;
- and R.sub.2 is polyhydroxyalkyl, polyhydroxyaryl, polyhydroxyalkylaminoakyl, polyhydroxylarylaminoalkyl, polyhydroxalkylaminoaryl or polyhydroxyarylaminoaryl having from 1 to 18 carbon atoms inclusive.
2 more elements
A essentially halogen-free UV radiation or electron beam curable composition suitable for producing a flame retardant polymer, which comprises:
- an oligomer which is the reaction product of a polyisocyanate and a phosphonate polyol, said oligomer being capped by at least one monohydroxy functional compound with ethylenic unsaturation;
- and an organic monomer;
- said polyol being the reaction product of dimethyl methylphosphonate, phosphorus pentoxide, ethylene oxide and water in a molar ration of about 2:2:8:1, respectively.
A essentially halogen-free UV radiation or electron beam curable composition suitable for producing a flame retardant polymer, which comprises:
- an oligomer that is the reaction product of a polyisocyanate and a phosphonate polyol, said oligomer being capped by at least one monohydroxy functional compound with ethylenic unsaturation;
- and an organic monomer;
- said polyol having the formula:
- ##STR6## wherein R.sub.1, R.sub.2, R.sub.4 and R.sub.6 are each independently selected from the group consisting of alkyl, aryl, poly (alkylene oxide) polyhydroxyalkyl, polyhydroxaryl, polyhydroxyalkylaminoalkyl, polyhydroxyarylaminoalkyl, polyhydroxyalkylaminoaryl and polyhydroxyarylaminoaryl;
- R.sub.3 and R.sub.5 are each independently selected from the group consisting of alkylene and arylene;
- m and n are each independently an integer from 0 to 10 inclusive, provided that at least one of m and n is 1 or more;
- and x is 1 to 100.
4 more elements
Dependencies are inferred from the claim text.