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US 4,066,717 AGranted
Thermoplastic resin compositions comprising polyindene or coumarone-indene resin
AssigneeThe Standard Oil Company
InventorsGeorge S. Li, Irving Rosen
Life of this patent
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Abstract
Certain physical properties, such as heat-distortion temperature and flexural modulus, of certain commercially available thermoplastic resins are improved by blending with polyindene or coumarone-indene resins.
Claims2
A composition having improved physical properties comprising a blend of (A) 100 parts by weight of polystyrene and (B) from 1 to 50 parts by weight of polyindene.
The process comprising blending in an efficient blending apparatus a mixture of (A) 100 parts by weight of polystyrene and (B) from 1 to 50 parts by weight of polyindene.
Dependencies are inferred from the claim text.