Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1996-10-04
1998-05-05
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526279, 526319, 526332, 526344, C08F22400, C08F21808, C08F21406, C08F21612
Patent
active
057476179
ABSTRACT:
An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight percent of vinyl chloride, 0.05-15 weight percent of allyl glycidyl ether, and 0.05-15 weight percent of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.
The copolymerization of vinyl chloride, allyl glycidyl ether, a vinyl ester and small amounts of an unsaturated organic trifunctional silane provide self-adhesion without gelation.
REFERENCES:
patent: 3928684 (1975-12-01), Buning et al.
patent: 4178423 (1979-12-01), Anderson et al.
patent: 5641845 (1997-06-01), Park et al.
Park Hung S.
Parker Anthony A.
Strickler David A.
Cheng Wu C.
Libbey-Owens-Ford Co.
Schofer Joseph L.
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