Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1988-02-19
1990-10-02
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524596, 528163, 528164, C08K 714, C08G 1410
Patent
active
049608266
ABSTRACT:
The titled compositions are useful binding adhesives, especially, for example, with engineered glass fiber-containing products, and the like. In the A-stage, the compositions are typically exceptionally water soluble and low temperature storage stable. Such compositions can be prepared initially by a procedure in which a resole or the like is copolymerized with free melamine(s) and is conditioned to include acidic stage conditioning. For example, phenol per se, formaldehyde and sodium hydroxide followed by melamine per se and aqueous sulfamic acid solution, with subsequent neutralization, can yield the exceptionally water soluble low temperature storage stable A-stage composition. The C-stage composition is non-punking and can be structurally hard and sound.
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Borden Inc.
Hoke Veronica P.
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