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 % of vinyl chloride, 0.05-15 weight % of allyl glycidyl ether, and 0.05-15 weight % 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.
This application is a continuation of application Ser. No. 08/751,745, filed Nov. 18, 1996, now abandoned, which is a Division of application Ser. No. 08/513,693 filed Aug. 11, 1995, now U.S. Pat. No. 5,641,845.
A liquid epoxy-functional acrylic resin is disclosed. The resin comprises 10-90 wt % of recurring units of an epoxy-functional allylic monomer and 10-90 wt % of an acrylic monomer that has a homopolymer Tg less that 0.degree. C. The epoxy-functional allylic monomer has the general structure: ##STR1## R is hydrogen, a C.sub.1 -C.sub.10 aryl, or a C.sub.6 -C.sub.12 aryl group; A is an oxyalkylene group; and n, which is an average number of oxyalkylene groups, is within the range of 0 to about 15.
