Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2007-10-19
2009-12-08
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C156S325000, C156S327000, C428S354000, C428S411100, C428S412000, C525S067000, C528S196000, C528S198000
Reexamination Certificate
active
07629432
ABSTRACT:
The present invention relates to polycarbonate having repeat units derived from tert-butylhydroquinone (TBHQ). It has herein been found that polycarbonate having repeat units derived from TBHQ has superior properties as compared to polycarbonate having repeat units derived from other dihydroxy (hydroquinone-type) compounds. In one embodiment the present invention provides a polycarbonate having repeat units derived from tert-butylhydroquinone. The polycarbonate has a Mw (PC) of at least 9,000 g/mol.
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Kamps Jan Henk
Kung Edward
Mullen Brian
Boykin Terressa M
Larson & Anderson LLC
Sabic Innovative Plastics IP B.V.
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