Weatherable resin compositions having low gloss appearances

Details Weatherable resin compositions having low gloss appearances Weatherable resin compositions having low gloss appearances

2006-01-03

2006-01-03

Mullis, Jeffrey (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S066000, C525S069000, C525S070000, C525S074000, C525S080000, C525S085000

Reexamination Certificate

active

06982299

ABSTRACT:
A low gloss thermoplastic molding composition comprising a grafted acrylate rubber (ASA) and a process for its preparation are disclosed. The composition contains an effective amount of a gloss-reducing agent that is the reaction product of(i) compound having two or more maleic anhydride groups per molecule and(ii) compound having two or more terminal primary amine groups per molecule.The incorporation of the gloss reducing agent in the inventive composition may be by blending the reaction product or, in the alternative, blending the reactants (i) and (ii) in the molten ASA under process conditions designed to bring about the in situ formation of the inventive gloss reducing agent.

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patent: 0 285 969 (1988-03-01), None

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