Disulfide-containing phenolic resin as curing agent for...

Details Disulfide-containing phenolic resin as curing agent for... Disulfide-containing phenolic resin as curing agent for...

2007-07-17

2009-02-17

Sellers, Robert (Department: 1796)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C525S390000, C525S396000, C525S481000, C525S523000, C568S022000

Reexamination Certificate

active

07491789

ABSTRACT:
The present invention discloses a sulfur-containing phenolic resin which comprises an organic group represented by the following formula (1):in-line-formulae description="In-line Formulae" end="lead"?—R1—S—R2—S—R1—  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein R1represents a hydrocarbon group having 2 to 6 carbon atoms,R2represents a hydrocarbon group having 1 to 10 carbon atoms,between a phenolic carbon and a phenolic carbon, phenol derivatives represented by the following formula (5):wherein R5represents a C2-3alkylene group, R6represents a C1-10alkylene group, G represents H, a C1-10alkyl group, etc.,and an epoxy resin composition containing (A) a curing agent of the above-mentioned formula (5) and (B) an epoxy resin as essential components.

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