Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1997-12-30
2000-05-02
Yoon, Tae
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526227, 5262305, 526320, C08F 1824, C08F 434
Patent
active
060574119
ABSTRACT:
A process for forming a polymerizable, liquid, substantially gel-free, poly(allyl carbonate)-functional prepolymer composition comprises heating a neat composition comprising at least one poly(allyl carbonate)-functional monomer and free radical initiator having a ten-hour half-life temperature of at least 85.degree. C. at temperatures in the range of from 5 Celsius degrees below the ten-hour half-life temperature of the free radical initiator to 150.degree. C., to form a reaction mixture having an increased 25.degree. C. viscosity in the range of from 25 to 10,000 centipoises and an ethylenic double bond utilization of at least 3 percent; and over a period of less than 90 minutes cooling the reaction mixture to a temperature at least 20 Celsius degrees below the ten-hour half-life temperature of the initiator.
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Morris George D.
PPG Industries Ohio Inc.
Yoon Tae
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