Aqueous pigment suspensions based on alkyl (meth)acrylates...

Details Aqueous pigment suspensions based on alkyl (meth)acrylates... Aqueous pigment suspensions based on alkyl (meth)acrylates...

D - Textiles, Paper

21

H

9/58

D21H 17/37 (2006.01) D21H 17/74 (1990.01)

Patent

CA 1276754

Abstract of the Disclosure: Aqueous pigment suspensions which are added to the stock suspension during papermaking and contain, as a dispersant, from 0.1 to 2% by weight, based on the pigment, of a copolymer which contains, as copolymerized units, a) from 40 to 95% by weight of an ester of (meth)acrylic acid with a saturated monohydric C1-C8-alcohol or with a saturated dihydric C2-C4-alcohol and b) from 60 to 5% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and has a K value of from 10 to 65 (determined according to H. Fikentscher in 1% aqueous solution in the form of the ammonium salt at pH 9 and at 20°C), their prepara- tion and their use.

503564

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