Reactive catalyst for amino resins

Details Reactive catalyst for amino resins Reactive catalyst for amino resins

1978-04-06

1979-07-24

Konopka, P. E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156331, 264109, 428326, B29J 500

Patent

active

041621786

ABSTRACT:
A reactive catalyst for the polycondensation of amino resins used for bonding water-penetrable cellulosic particles is disclosed. Said catalyst, if used in combination with a known catalyst, increases the rate of polycondensation of the resin while at the same time allowing the use of lower amounts of resin solids without imparting any loss in bonding strength. The catalyst comprises a concentrated aqueous solution of a mixture of organic and inorganic components, the organic components being formaldehyde and urea or a non resinous condensation product of formaldehyde and urea, and the inorganic component being a water-soluble alkali metal halide.

REFERENCES:
patent: 3697355 (1972-10-01), Black
patent: 3826770 (1974-07-01), Christensen et al.
patent: 3842039 (1974-10-01), Vargiv et al.
patent: 3905847 (1975-09-01), Black
patent: 4075149 (1978-02-01), Lakshmann
patent: 4082904 (1978-04-01), Bornstein

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