Title: Copolymers of alpha-methylstyrene and styrene and uses thereof

Abstract: This specification discloses manufacture of copolymers of alpha-methylstyrene and styrene in which the alpha-methylstryene may range from about 50 to 90% and the softening point may range from about 60.degree. to 100.degree.C. The copolymers have especial utility with elastomers to produce pressure sensitive adhesives and the like, and in hot melt coatings.

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Inventors: Douglas, Paul S. (Fayette County, PA, US)
Patellis, Anargiros Pete (Westmoreland County, PA, US)
Vredenburgh, Walter A. (Pleasant Hills, PA, US)

Application Number: 333215
Filing Date: 1973-02-16
Publication_date: 1976-01-13
Assignee: Hercules Incorporated (Wilmington, DE)
Primary Class(es): 524/524 525/98, 525/222, 525/240, 525/241, 526/237, 526/347, 528/499
Other Classes:
US Patent Ref:

3000868	Sep, 1961	Powers	260/88.
3401131	Sep, 1968	Mase et al.	260/28.
3429843	Feb, 1969	Arnold et al.	260/28.
3630981	Dec, 1971	Finfinger et al.	260/28.
3644252	Feb, 1972	Shenfeld et al.	260/27.
3654250	Apr, 1972	Davis	260/88.
3725506	Apr, 1973	Bolte et al.	260/88.

Other Refs:
Primary Examiner: Schofer, Joseph L.
Assistant Examiner: Clingman, A. L.
Attorney: Board; Charles L.