Bifunctional phenylene ether oligomer, its derivatives, its...

Details Bifunctional phenylene ether oligomer, its derivatives, its... Bifunctional phenylene ether oligomer, its derivatives, its...

2005-11-08

2005-11-08

Truong, Duc (Department: 1711)

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Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

C525S481000, C525S504000, C525S508000, C525S523000, C525S533000, C525S534000, C528S087000, C528S062000, C528S205000, C528S219000

Reexamination Certificate

active

06962744

ABSTRACT:
A bifunctional phenylene ether oligomer of the formula (1), obtained by oxidation polymerization of a bivalent phenol of the formula (2) and a monovalent phenol of the formula (3),(wherein —X— is represented by the formula (2′),and Y—O— is represented by the formula (3),R2, R3, R4, R8, R9, R10 and R11 in the formula (2′) and the formula (3′) being required not to be a hydrogen atom, and its use.

REFERENCES:
patent: 5270435 (1993-12-01), Pfaendner et al.
patent: 6689920 (2004-02-01), Ishii et al.
patent: 921158 (1999-06-01), None

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