Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-01-30
2007-01-30
Acquah, Samuel A. (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...
C528S176000, C528S190000, C528S103000, C528S194000, C528S196000, C525S439000, C525S444000, C525S474000
Reexamination Certificate
active
11025635
ABSTRACT:
A copolymer composition comprises an arylate polyester unit, an aromatic carbonate unit, and a soft-block moiety, wherein individual occurrences of the soft block moiety are linked by a spacer unit comprising one or more of the arylate polyester units, one or more of the aromatic carbonate units, or a combination comprising each of these. In one embodiment, a soft block moiety comprises a polysiloxane unit. A film of the composition has a percent transmittance of greater than or equal to 60% as determined according to ASTM D1003-00. A method of forming a copolymer composition is disclosed, comprising substantially forming the bis-haloformates of a dihydroxy compound comprising an arylate polyester unit, and a dihydroxy compound comprising a soft-block moiety, and reacting the bis haloformates with a dihydroxy aromatic compound.
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Davis Gary C.
Mullen Brian D.
Sybert Paul D.
Acquah Samuel A.
General Electric Company
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