.alpha. methylstryrene and para methylstyrene copolymers

Details .alpha. methylstryrene and para methylstyrene copolymers .alpha. methylstryrene and para methylstyrene copolymers

C - Chemistry, Metallurgy

08

F

400/3002, 402/57

C08F 212/12 (2006.01) C09J 153/02 (2006.01)

Patent

CA 1246299

ALPHA METHYLSTYRENE AND PARA METHYLSTYRENE COPOLYMERS Abstract of Disclosure Disclosed are copolymers of alpha methylstyrene and para methylstyrene having Ring & Ball softening points greater than 140°C, a Tg of greater than 100°C to 110°C, a weight average molecular weight (Mw) of less than 15,000, and a molecular weight distribution of about 2 to about 3. These copolymers are useful in adhesives, sealants and molding compounds, especially as reinforcing or modifier resins for thermoplastic block copolymers having aromatic and aliphatic blocks contained in pressure sensitive adhesives.

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