Abstract: A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder); the AB block polymer has a number average molecular weight of about 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; wherein the polymeric A segment of the block polymer is of polymerized glycidyl (meth)acrylate monomers reacted with an acid from the group of aromatic carboxylic acids or aliphatic carboxylic acids; and the B segment is of polymerized alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, hydroxy alkyl (meth)acrylate monomers having about 1-4 carbon atoms in the alkyl group; and wherein the weight ratio of pigment to binder in the dispersion is about 1/100-200/100.

Abstract: An aqueous coating composition containing: (a) an aqueous carrier medium: (b) a pigment having a pH below 7.0; (c) an AB block copolymer pigment dispersant resin of (1) an A block of a hydrophobic polymer having amine groups; and (2) a B block of a hydrophilic polymer having hydroxyl groups and carboxyl groups; the AB block copolymer has a number average molecular weight of 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; wherein the pigment and the dispersant are present in a pigment to dispersant weight ratio of 0.1/1-20/1; (d) a film forming polymeric binder containing carboxyl groups and (e) a crosslinking agent which on curing of the coating composition will react with the carboxyl and hydroxyl groups of the AB block copolymer and the carboxyl groups of the film forming polymeric binder. Pigment dispersions of the AB block copolymer and process for forming the dispersions also are part of this invention.

Abstract: A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder); the AB block polymer has a number average molecular weight of about 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; wherein the polymeric A segment of the block polymer is of polymerized glycidyl (meth)acrylate monomers reacted with an acid from the group of aromatic carboxylic acids or aliphatic carboxylic acids; and the B segment is of polymerized alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, hydroxy alkyl (meth)acrylate monomers having about 1-4 carbon atoms in the alkyl group; and wherein the weight ratio of pigment to binder in the dispersion is about 1/100-200/100.

Abstract: A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder);the AB block polymer has a number average molecular weight of about 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; whereinthe polymeric A segment of the block polymer is of polymerized glycidyl (meth)acrylate monomers reacted with an acid from the group of aromatic carboxylic acids or aliphatic carboxylic acids; andthe B segment is of polymerized alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, hydroxy alkyl (meth)acrylate monomers having about 1-4 carbon atoms in the alkyl group; andwherein the weight ratio of pigment to binder in the dispersion is about 1/100-200/100.

Abstract: A process for alleviating bleed and improving color in printed elements comprises applying an anionic printing liquid and a cationic printing liquid to a substrate adjacent to one another, wherein at least one of the printing liquids contains a polymer and reacting the anionic and cationic printing liquids with one another; wherein the color integrity of the anionic and cationic printing liquids is maintained.

Abstract: The present invention relates to novel preformed silicone-containing acrylic copolymers including silicone-containing acrylic star polymers, graft copolymers and macromonomers. Described are linear diblock macromomomers, graft copolymers and star polymers comprising a substantially hydrophilic block or block and a substantially hydrophobic, permeable block or block, said hydrophilic block preferably comprising at least about 25% by weight of a hydrophilic acrylic-type monomer and said hydrophobic, permeable block comprising at least about 50% by weight of at least one or more polysiloxanylalkylesters of an alpha, beta unsaturated acid.

Abstract: The present invention relates to novel copolymers and contact lenses made from these copolymers comprising preformed silicon-containing acrylic star polymers and macromonomers, preparation of these contact lenses and a therapeutic method for treating patients with visual impairment. Described is a copolymer comprising at least about 10% by weight of a preformed silicone-containing acrylic copolymer and no more than about 90% by weight of a matrix formed from the random polymerization of a mixture of monomers. The mixture of monomers comprises at least one monomer selected from the group consisting of silicone acrylates, esters of alpha, beta-unsaturated acids and wetting monomers. The preformed silicone-containing acrylic copolymer is preferably copolymerized throughout the matrix.

Abstract: The present invention relates to novel copolymers and contact lenses made from these copolymers comprising preformed silicone-containing acrylic star polymers, graft copolymers and macromonomers, preparation of these contact lenses and a therapeutic method for treating patients with visual impairment.Described is a composition comprising at least about 10% by weight of a preformed silicone-containing acrylic copolymer and no more than about 90% by weight of a matrix formed from the random polymerization of a mixture of monomers. The mixture of monomers comprises at least one hydrophilic monomer and optionally, monomers selected from the group consisting of silicone acrylates, esters of alpha, beta-unsaturated acids and crosslinking monomers. The preformed silicone-containing acrylic copolymer is preferably copolymerized throughout the matrix. The final compositions are hydrated to a final water content of at least about 10% by weight.

Abstract: A process for preparing aqueous pigmented ink jet inks with improved properties, comprising the steps of (a) charging a rubber two-roll milling apparatus with a pigment and a polymeric dispersant; (b) milling to obtain a dispersion of pigment with polymeric dispersant; and (c) dispersing the dispersion in an aqueous carrier medium.

Abstract: The present invention relates to novel copolymers and contact lenses made from these copolymers comprising preformed silicone-containing acrylic star polymers and macromonomers, preparation of these contact lenses and a therapeutic method for treating patients with visual impairment.Described is a copolymer comprising at least about 10% by weight of a preformed silicone-containing acrylic copolymer and no more than about 90% by weight of a matrix formed from the random polymerization of a mixture of monomers. The mixture of monomers comprises at least one monomer selected from the group consisting of silicone acrylates, esters of alpha, beta-unsaturated acids and wetting monomers. The preformed silicone-containing acrylic copolymer is preferably copolymerized throughout the matrix.

Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment, and an effective amount of a surfactant sufficient to decrease the drying time of the ink. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.

Abstract: A pigmented ink for ink jet printers which comprises an aqueous carrier medium, and pigment particles dispersed in an AB or BAB block copolymer having a hydrophilic segment and a segment that links to the pigment. The A block and the B block(s) have molecular weights of at least 300. These inks give images having good print quality, water and smear resistance, lightfastness, and storage stability.

Abstract: Copolymeric macromonomers containing alkyl acrylate and methacrylate units and units of polysiloxanylalkyl esters of acrylic and/or methacrylic acids and a terminal carbon-carbon double bond organo group are useful for copolymerizing with other acrylate or methacrylate esters to make improved polymer compositions such as for contact lenses.

Abstract: Hybrid star polymers with acrylic arms and crosslinked polysiloxane cores can be made by a polycondensation of substituent alkoxysilyl groups contained in acrylic ester groups of acrylic block copolymers to form the cores.

Abstract: Hybrid star polymers with acrylic arms and crosslinked polysiloxane cores can be made by a polycondensation of substituent alkoxysilyl groups contained in acrylic ester groups of acrylic block copolymers to form the cores.

Abstract: Hybrid star polymers with functional acrylic arms and crosslinked polysiloxane cores are made by a group transfer polymerization process followed by a polycondensation of substituent alkoxysilyl groups to form the cores.

Abstract: Acrylic star polymers containing polysiloxanylalkyl ester groups in their arms and terminal organo groups containing a polymerizable carbon-carbon double bond are useful for improving polymer compositions for contact lenses.

Abstract: Oil soluble copolymers comprised of an addition-type polymeric main chain and a plurality of addition-type polymeric side branches which contain basic amine groups are disclosed which stabilize distillate fuel and lubricating oil compositions against deterioration during storage.

Abstract: ABA triblock polymers that have glycidyl methacrylate as the A segments and (meth)acrylate monomers as the B segment are made by group transfer polymerization, using a monofunctional initiator to make the A, then AB segments. A coupling agent is used to connect the AB segments at the B group.

Abstract: Hybrid star polymers with functional acrylic arms made by group transfer polymerization and crosslinked cores made by condensation reactions with the functional groups on the arms.