Aqueous dispersions, a process for their preparation and the use

Details Aqueous dispersions, a process for their preparation and the use Aqueous dispersions, a process for their preparation and the use

1986-07-02

1988-05-10

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Natural resin or derivative containing

106238, 162158, 1621646, 428498, C08J 302, B32B 906

Patent

active

047433035

ABSTRACT:
Aqueous cationic or anionic dispersions of rosin and certain synthetic sizing agents, carbamoyl chlorides, ketene dimers or acid anhydrides. The particles in the dispersed phase contain a mixture of rosin and synthetic sizing agent and the dispersions are prepared by homogenisation of a homogeneous mixture of the rosin material and the synthetic sizing agent in the presence of a dispersing agent. The dispersions are used as sizing agents in the production of paper, paper board, board and similar products.

REFERENCES:
patent: 2386033 (1945-10-01), Chappell
patent: 3139373 (1964-06-01), Liggett
patent: 3940519 (1976-02-01), Helmer et al.
patent: 4296012 (1981-10-01), Okumichi
patent: 4522686 (1985-06-01), Dumas
Chem. Abst. 94:67567z Mar. 1979 Japan abstract, Hamada, #59:89357 May 23, 1984.
Sizing Seminar "An overview of cellulose reactive sizes" Dumas pp. 85-92, 1983 Tapp. series.
Sizing Seminar "Critical Phenomena in Rosin Sizing" Strazdins, E., pp. 53-65-Tapp. Seminar notes.
Abstract Bull. of the Inst. of Paper Chem. vol. 51 No. 10 Number 10271; Okumichi et al., Apr., 1981.

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