Method of preparing zinc-modified phenol-aldehyde novolak resins

Details Method of preparing zinc-modified phenol-aldehyde novolak resins Method of preparing zinc-modified phenol-aldehyde novolak resins

1978-05-31

1979-08-21

Schain, Howard E.

Textiles: manufacturing

260 293, 428307, 428327, 528162, 525504, 525506, 525936, B41L 136, B41M 516, C08G 828, C08G 832

Patent

active

041651030

ABSTRACT:
A method of making zinc-modified phenol-aldehyde novolak resins for use as a color-developing agent in pressure-sensitive record sheet material involving the addition of certain dry particulate zinc compounds and an ammonium carboxylate to the melted resin. Specifically, a phenol-formaldehyde resin is reacted with zinc oxide or zinc carbonate and ammonium formate.

REFERENCES:
patent: 3732120 (1973-05-01), Brockett et al.
patent: 3737410 (1973-06-01), Mueller
patent: 3817922 (1974-06-01), Barth
patent: 4025490 (1977-05-01), Weaver
patent: 4027065 (1977-05-01), Brockett et al.
patent: 4082713 (1978-04-01), Kelley
patent: 4121013 (1978-10-01), Miller et al.

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