Method of deinking waste paper for reclamation thereof

Details Method of deinking waste paper for reclamation thereof Method of deinking waste paper for reclamation thereof

D - Textiles, Paper

21

C

D21C 5/02 (2006.01)

Patent

CA 2126723

A method of deinking waste paper for reclamation thereof, which comprises disintegrating waste paper with an alkali in water in the presence of a polyoxyalkylene ether compound having the formula R-O(PO)x(AO)y(PO)z-H wherein R is an alkyl or alkenyl of 8-22 carbons, or an alkylphenyl wherein the alkyl has 4-12 carbons; PO is an oxypropylene group; and AO is an oxyethylene group, or a mixed oxyalkylene group composed of an oxyethylene group and at least one oxyalkylene group selected from the group consisting of an oxypropylene group and an oxybutylene group; and x is a numeral of 3-15, y is a numeral of 20-40, and z is a numeral of 5-20, as a deinking agent.

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