Urethane-modified novolaks for increasing the steel cord adhesio

Details Urethane-modified novolaks for increasing the steel cord adhesio Urethane-modified novolaks for increasing the steel cord adhesio

1997-09-08

1999-01-12

Truong, Duc

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528146, 528159, 528 48, 528 75, 528486, 528493, 528503, 525123, 525133, 525134, 4284231, 4284139, 428460, C08G 0804

Patent

active

058591699

ABSTRACT:
Urethane-modified novolaks which are prepared by simultaneous reaction of a monohydric or polyhydric phenol (A) with an oxo compound (aldehyde or ketone) (B) and a urethane (C) in the presence of an acidic catalyst (D) at an elevated temperature of 60.degree. to 200.degree. C. and contain no interfering amounts of free starting phenol, and their use as adhesion improvers in rubbers, in particular rubbers containing reinforcing media such as steel cord or textile fibers.

REFERENCES:
patent: 4148769 (1979-04-01), Swarts et al.
patent: 5089589 (1992-02-01), Hesse et al.
patent: 5426152 (1995-06-01), Hesse et al.

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