Process of manufacture of phenolic resins for the manufacture of

Details Process of manufacture of phenolic resins for the manufacture of Process of manufacture of phenolic resins for the manufacture of

1998-07-10

2000-07-18

Wu, David W.

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...

524436, 524400, 524541, C08L 6114

Patent

active

060908831

ABSTRACT:
A process of manufacture of phenolic resins using calcium catalysis not comprising any filtration stage. This result is obtained by holding back the precipitation of the calcium species by the combined use of a chelatant/sequestrant and of a dispersing anionic polymer. Resins which are stable in storage and with excellent water tolerance.

REFERENCES:
patent: 3336185 (1967-08-01), Helbing
patent: 3933427 (1976-01-01), Bohnsack et al.
patent: 3935139 (1976-01-01), Ashall
patent: 4303568 (1981-12-01), May et al.
patent: 4904516 (1990-02-01), Creamer
patent: 4923634 (1990-05-01), Hoots et al.
French Search Report dated Feb. 13, 1998.

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