Composition and process for sizing paper

Details Composition and process for sizing paper Composition and process for sizing paper

1996-05-09

1997-07-15

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

1062071, 1062179, C09D10306, C09D10500

Patent

active

056478984

ABSTRACT:
The invention relates to a new composition for sizing paper and board, containing a cationic polysaccharide esterified by a dicarboxylic acid anhydride, characterized in that the said dicarboxylic acid anhydride is substituted with a carbon chain, saturated or unsaturated, of branched structure. The anhydride may for example consist of tetrapropenylsuccinic anhydride or of any one of its isomers. The composition for sizing according to the invention may, if necessary, contain an oxidizing agent such as a persulphate. It may advantageously be applied to the surface treatment of printing and/or writing papers, in particular of papers for envelopes and of papers for impact-free printing such as inkjet printing.

REFERENCES:
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patent: 3732207 (1973-05-01), Kovats
patent: 4239592 (1980-12-01), Gaspar et al.
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patent: 4387221 (1983-06-01), Tessler et al.
patent: 4613407 (1986-09-01), Huchette et al.
patent: 4626288 (1986-12-01), Trzasko et al.
patent: 4872951 (1989-10-01), Maliczyszyn et al.
patent: 4992536 (1991-02-01), Billmers et al.
patent: 5129989 (1992-07-01), Gosset et al.

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