Process for preparing resorcinol copolymers

Details Process for preparing resorcinol copolymers Process for preparing resorcinol copolymers

1982-04-05

1983-03-15

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525442, 525501, 528139, 528140, 528143, 528144, 528145, 528155, 428480, 428482, C08G 820, C08G 822, C08G 824

Patent

active

043768547

ABSTRACT:
A process for preparing a resorcinol copolymer, comprising at least one specific phenol with formaldehyde at a certain mole ratio to obtain a resol-type precondensate containing 1 to 30% of residual unreacted formaldehyde and then adding said resol-type precondensate to a mixture of an acid catalyst and at least one resorcinol to effect co-condensation. The obtained copolymer is useful for an adhesive for polyester fiber and rubber.

REFERENCES:
patent: 2477641 (1949-08-01), Nagel
patent: 2878198 (1959-03-01), Ingram et al.
patent: 3437610 (1969-04-01), Moult
patent: 3835082 (1974-09-01), Wright
patent: 4009304 (1977-02-01), Dixon et al.
patent: 4112160 (1978-09-01), Kako et al.

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