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
1999-09-14
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C08F 1824
Patent
active
059524413
ABSTRACT:
A polymerizable, liquid, substantially gel-free composition comprising a partially polymerized mixture of ethylenically unsaturated compounds wherein: (a) the mixture of ethylenically unsaturated compounds which was partially polymerized comprised a mixture of diethylene glycol (allyl carbonate) compounds each represented by Formula I: ##STR1## in which n is a positive integer, m is a positive integer, and the diethylene glycol (allyl carbonate) compound for which the value of n is 1 constituted from 25 to 75 area percent of the mixture of diethylene glycol (allyl carbonate) compounds; and (b) the ethylenic double bond utilization of the polymerizable, liquid, substantially gel-free composition is at least 3 percent. The polymerizable, liquid, substantially gel-free composition exhibits low shrinkage in the mold when polymerized.
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Herold Robert D.
Okoroafor Michael O.
Wiedrich Charles R.
Wu Bo
Michl Paul R.
Morris George D.
PPG Industries Ohio Inc.
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