Abstract: A method for controlling the deposition of stickies in pulping and papermaking processes comprises adding to fiber pulp or stock an additive comprising an organo-modified siloxane.

Abstract: A method for controlling the deposition of stickies in pulping and papermaking processes comprises adding to fibre pulp or stock an additive comprising an organo-modified siloxane comprising units of the formula: [R1aZbSiO(4-a-b)/2]n in which each R1 is independently selected from a hydrogen atom, an alkyl, aryl, alkenyl, aralkyl, alkaryl, alkoxy, alkanoyloxy, hydroxyl, ester or ether group, and each Z is independently selected from an alkyl group substituted with an amine, amide, carboxyl, ester, or epoxy group, or preferably at least one or more groups —R2—(OCpH2p)q(OCrH2r)S—R3; wherein n is an integer greater than 1; a and b are independently 0, 1, 2 or 3; R2 is an alkylene group or a direct bond; R3 is a group as defined for R1 or Z above; p and r are independently an integer from 1 to 6; q and s are independently 0 or an integer such that 1?q+s?400; and wherein each molecule of the organo-modified siloxane contains at least one group Z.

Abstract: A method of deinking printed paper comprises pulping the paper to form an aqueous slurry, adding a deinking additive to the paper, and removing detached ink by flotation, wherein the additive comprises an organo-modified siloxane comprising units of the formula: [R1aZbSiO(4-a-b)/2]n in which each R1 is independently selected from a hydrogen atom, an alkyl, aryl, alkenyl, aralkyl, alkaryl, alkoxy, alkanoyloxy, hydroxyl, ester or ether group; each Z is independently selected from an alkyl group substituted with an amine, amide, carboxyl, ester, or epoxy group, or a group —R2—(OCPH2P)q (OCrH2r)s—R3; n is an integer greater than 1; a and b are independently 0, 1, 2 or 3; R2 is an alkylene group or a direct bond; R3 is a group as defined for R1 or Z above; p and r are independently an integer from 1 to 6; q and s are independently 0 or an integer such that 1?q+s?400; and wherein each molecule of the organo-modified siloxane contains at least one group Z.

Abstract: A process for removing capsule oils from carbonless copy paper involving: (a) providing carbonless copy paper containing capsule oils; and (b) disintegrating the carbonless copy paper in the presence of an alkoxylated C12-14 alcohol to form a stock suspension.

Abstract: A method of controlling or preventing foam in an aqueous system is provided, wherein an effective amount of an alkoxylated, epoxidized fatty compound that has been ring-opened with a nucleophile is determined and added to the system. After ring opening with the nucleophile, the epoxidized fatty compound is alkoxylated with an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide.

Abstract: A process for controlling the deposition of stickies from paper stock suspensions during papermaking by adding to the paper stock suspensions from 0.001% to 5.0% by weight based on the weight of fibrous paper stock, of alkoxylation products obtained by reaction of alkylene oxides with C.sub.10-22 carboxylic acid derivatives or C.sub.10-22 carboxylic acids containing functional groups with at least one OH group in the 9, 10, 13 or 14 position.