Pulp and papermaking additive

Details Pulp and papermaking additive Pulp and papermaking additive

D - Textiles, Paper

21

D

9/58

D21D 3/00 (1980.01)

Patent

CA 1099859

APPLICATION FOR UNITED STATES PATENT INVENTOR: JOSEPH A. MACIASZEK TITLE: PULP AND PAPERMAKING ADDITIVE ABSTRACT OF THE DISCLOSURE An antifoam/defoam composition used also as a drainage aid in pulp and papermaking process lines which con- sists of a water-base composition useful in the pH range 7.0-9Ø The milieu in which the composition is utilized such as e.g. black liquor, may be kept a-t a pH of 4.0-12Ø The composition is as follows: Hydrophobic silica Bisamide of the following formula: Image where n is an integer from 1 to 6; and R is a saturated or unsaturated, straight or branched chain hydrocarbyl group having from 5 to 22 carbon atoms. Acid containing crosslinked copolymer of acrylic acid Dioctyl sulfosuccinate Paraffin oil Water More particular formulae are also set out below: (A) Hydrophobic silica 0-30% Ethylene-bis-stearamide .001-50% Acid containing crosslinked acrylic acid polymer .05-10% Dioctyl sulfosuccinate .05-10% Paraffin oil .001-99% H2O .001-99% (B) Hydrophobic silica 4-12% Ethylene-bis-stearamide 4-12% Acid containing crosslinked acrylic acid polymer .25-3% Dioctyl sulfosuccinate .25-3% Paraffin oil 41-35% H2O 50-40% (C) Hydrophobic silica 4.5% Ethylene-bis-stearamide 1% Acid containing crosslinked acrylic acid polymer 1% Dioctyl sulfosuccinate 1% Paraffin oil 42.5% H2O 50%

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