Carboxylic acid-modified biphenyl epoxy diacrylate

Details Carboxylic acid-modified biphenyl epoxy diacrylate Carboxylic acid-modified biphenyl epoxy diacrylate

2008-02-13

2008-11-04

Sellers, Robert (Department: 1796)

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

Synthetic resins

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

C525S390000, C525S396000

Reexamination Certificate

active

07446154

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),in-line-formulae description="In-line Formulae" end="lead"?HO—YaO—X—OY—ObH   (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?HO—X—OH   (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Y—OH   (3)in-line-formulae description="In-line Formulae" end="tail"?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:
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patent: 4460743 (1984-07-01), Abe et al.
patent: 5270435 (1993-12-01), Pfaendner et al.
patent: 6689920 (2004-02-01), Ishii et al.
patent: 921158 (1999-06-01), None
patent: 62-41223 (1987-02-01), None

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