Sizing agent and use thereof
AssigneeBayer Aktiengesellschaft
InventorsWolf-Dieter Schroer, Joachim Probst, Ingeborg Kolb, Ulrich Beck, Peter Mummenhoff, Heinz Baumgen
Life of this patent
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Abstract
A sizing agent which contains from 1 to 60 parts, by weight, of a fixing and sizing accelerating agent and from 0 to 80 parts, by weight, of conventional auxiliaries per 10 parts by weight of hydrophobic, cellulose-reactive sizing materials, the fixing and sizing accelerating agent being a polymer composed of linear or branched carbon chains, to which primary, secondary or tertiary amino and/or quaternary ammonium groups are bound directly or by side chains exhibits a thorough and rapid sizing effect, in particular in the better sizing of paper.
Claims5
A sizing agent comprising:
- (A) hydrophobic, cellulose-reactive sizing materials,
- (B) from 1 to 60 parts, by weight, of fixing and sizing acceleration agents, per 10 parts, by weight, of the hydrophobic cellulose-reactive sizing materials, where the fixing and sizing acceleration agents are statistical terpolymers of:
- (a) from 8 to 20% by weight, of N, N-dimethylamino ethyl acrylate, N, N-dimethyl-aminoethyl methacrylate or both;
- (b) from 45 to 80%, by weight, of styrene;
- and
- (c) from 8 to 35%, by weight, of acrylonitrile, wherein the total of (a) to (c) amounts to 100%, by weight, and the dimethylamino moieties of the terpolymer are protonated.
Dependencies are inferred from the claim text.