Polyformals and copolyformals with reduced water absorption,...

Details Polyformals and copolyformals with reduced water absorption,... Polyformals and copolyformals with reduced water absorption,...

2007-04-03

2007-04-03

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C264S176100, C264S219000, C359S642000, C528S126000, C528S174000, C528S198000, C528S205000, C528S219000

Reexamination Certificate

active

10894973

ABSTRACT:
A thermoplastic molding composition comprising a linear (co)polyformal is disclosed. The (co)polyformal corresponds to formulae (Ia) or (Ib),in which A independently denotes hydrogen or phenyl, —O-D-O— and —O-E-O— independently denote a diphenolate residue, in which -E- and -D- independently denote an aromatic radical having 6 to 40 C atoms, wherein at least one of —O-D-O— and —O-E-O— denotes 1,1-bis(4-hydroxyphenyl)cyclohexane residue. The composition is characterized in its restricted water absorption. Also disclosed is a process for the preparation of the composition.

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patent: 1 117247 (1982-01-01), None
Patent Abstracts of Japan Bd. 010, Nr. 036 (C-328), Feb. 13, 1986 & JP 60 188426 A (Idemitsu Kosan KK), Sep. 25, 1985.
Patent Abstracts of Japan Bd. 015, Nr. 504 (C-0896) Dec. 19, 1991 & JP 03 221523 A (Idemitsu Kosan Co Ltd), Sep. 30, 1991.

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