Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1979-06-08
1980-12-09
Schain, Howard E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
156110A, 156110C, 156110MD, 156331, 156335, 260 3, 260 293, 428295, 428382, 428383, 428392, 428394, 428397, 525138, C08G 1406
Patent
active
042385954
ABSTRACT:
Phenolic aldehyde resins used in adhesive coatings for binding substrates to rubber are modified to provide better adhesion and to decrease the problem of blowholes on the substrate coated with the adhesive coating. The resin is modified by incorporating into the resin a compound selected from the group consisting of urea, thiourea, thionamide having one to six carbon atoms or mixture thereof. In the method of preparing the modified phenolic aldehyde resin about 1 to about 10 weight percent based on the resin is added to the aqueous solution either simultaneously with or sequentially after the addition of the phenolic compond and aldehyde. The modified phenolic resin is then combined with an elastomeric latex or latices to produce the improved adhesive coating.
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Modern plastics, Pollak pp. 45, 74 & 76, 1939.
PPG Industries Inc.
Schain Howard E.
Stachel Kenneth J.
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