Ammonia containing rosin sizes

Compositions: coating or plastic – Coating or plastic compositions – Natural resin or derivative containing

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106236, C08L 9304

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active

041417500

ABSTRACT:
Novel sizing compositions comprise an aqueous mixture of the reaction product of urea with selected Lewis acid, and a rosin that is modified with from about 5 to 50 percent based on the weight of the rosin, of an organic acidic compound selected from the group consisting of an .alpha.,.beta.-unsaturated organic acid, an anhydride thereof, and their mixtures. The selected Lewis acids which can be employed are sulfuryl chloride, chlorosulfonic acid, thionyl chloride, benzenesulfonyl chloride, benzenesulfonic acid, ortho- or para-toluenesulfonyl chloride, and ortho- or para-toluenesulfonic acid. Methods for making the sizing compositions and paper which is sized with the sizing compositions are also disclosed.

REFERENCES:
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patent: 2729637 (1956-01-01), Gable et al.
patent: 2941919 (1960-06-01), Watkins
patent: 2956956 (1960-10-01), Strauss et al.
patent: 3906142 (1975-09-01), Dowthwaite
patent: 4022634 (1977-05-01), Emerson et al.
Chem. Abst., 51:7012j.
Chem. Abst., 37:5941, 1943.
Chem. Abst., 41:710,711, 1947.
Berlstems Handbook, 4th Edition, vol. 3 (1961), pp. 80-109.
Journal of Chemical Society, vol. 146, pp. 603-616 (1943), Some Properties of Urea, Biuret and Triuret, Haworth et al.
Benchte, vol. 68, pp. 957-960, 1935, Warren et al.

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