Foam compositions for surface application to fibrous substrates

Details Foam compositions for surface application to fibrous substrates Foam compositions for surface application to fibrous substrates

1981-05-12

1982-10-12

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 84, C08L 9304

Patent

active

043539939

ABSTRACT:
Improved rosin-based foams suitable for surface application to fibrous substrates such as paper and paperboard are described. The foams are obtained by aerating an aqueous solution having a pH of at least 8 and containing 0.1 to 5% of a water-soluble salt of rosin or fortified rosin and 0.02 to 5% of a water-soluble, amine-containing polymer compatible with the salt, the weight ratio of the salt to the polymer being within the range of 1:1 to 25:1.

REFERENCES:
patent: 2370058 (1945-02-01), Maguire
patent: 2593008 (1952-04-01), Chappell, Jr.
patent: 3210240 (1965-10-01), Read et al.
patent: 4099913 (1978-07-01), Walter et al.
patent: 4184914 (1980-01-01), Jenkins

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