Abstract: This invention provides organic solid solutions which exhibit nonlinear optical properties.Illustrative of the invention is an optically clear solid solution of poly(N,N-dimethylacrylamide) and 13,13-di(n-hexydecylamino)-14,14-dicyano-4,5,9,10-tetrahydropyrenoquinodim ethane.

Abstract: This invention provides organic solid solutions which exhibit nonlinear optical properties.Illustrative of the invention is an optically clear solid solution of poly(N,N-dimethylacrylamide) and 13,13-di(n-hexydecylamino)-14,14-dicyano-4,5,9,10-tetrahydropyrenoquinodim ethane.

Abstract: This invention provides novel polyoxyalkylene polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.

Abstract: A fabric comprising polyethylene terephthalate fibers which exhibits a reduced tendency to pill upon encountering surface abrasion is formed on an expeditious basis. During the polymerization of the monomers required to form the polyethylene terephthalate, a quantity of polyethylene glycol (as described) is copolymerized therewith to form a polymer which exhibits a substantial intrinsic viscosity (as described). Following the melt-extrusion of the polymer to form fibers and fabric formation, the fabric is subjected to a dye bath at an elevated temperature wherein it is dyed, and the intrinsic viscosity of the polymer is reduced (as described). The presence of units derived from polyethylene glycol within the polymer chain has been found to lead to such intrinsic viscosity reduction within the dye bath.

Abstract: Surface modification of polyester material is obtained by contacting the material in substantially non-crystallized form with a non-crystallizable oligomer. The oligomer has ester linkages and is prepared from a reaction mixture which includes at least one polyol having a functionality greater than three and selected from the group consisting of pentaerythritol, low molecular weight polymers of pentaerythritol, glycerol, low molecular weight polymers of glycerol and mixtures thereof. After contact with the oligomer, the polyester is crystallized. The modified polyester material exhibits improved properties such as hydrophilicity and/or adhesive bonding.

Abstract: In one embodiment this invention provides a novel fluid composition which comprises an aqueous medium which is thickened with a synergistic viscosity mixture of hydroxypropylcellulose and poly(maleic anhydride/alkene-1).A present invention thickened aqueous medium is applicable as a vehicle for explosive slurries, printing pastes, paint formulations, and the like. A high viscosity aqueous medium of this invention is uniquely adapted for use as a hydraulic fluid in well-drilling operations and in secondary oil and gas recovery from subterranean formations.

Abstract: This invention provides a novel hydraulic fluid composition adapted for fracturing of subterranean formations, which comprises (1) an aqueous medium, (2) methyl ether of polygalactomannan gum as a gelling agent, and (3) a breaker additive for subsequent reduction of fluid viscosity.

Abstract: In one embodiment this invention provides a fluid composition which comprises an aqueous medium which is thickened with a synergistic viscosity mixture of hydroxypropylcellulose and poly(maleic anhydride/alkyl vinyl ether) as a novel hydrocolloid gelling agent.An aqueous medium thickened with a present invention gelling agent is applicable as a vehicle for explosive slurries, printing pastes, paint formulations, adhesives, and the like. A thixotropic aqueous medium of this invention is uniquely adapted for use as a hydraulic fluid in well-drilling operations and in secondary oil and gas recovery from subterranean formations.

Abstract: This invention provides a novel dry blend composition adapted for application as a thickening agent in aqueous solutions. The composition consists essentially of an admixture of a polygalactomannan gum and a copolymer containing carboxylate groups.The invention composition contributes exceptionally high viscosity to an aqueous solution due to a synergistic viscosity effect derived from the interaction of the polygalactomannan and copolymer components.

Abstract: This invention provides a novel aialkylacrylamide ether adduct of polygalactomannan gum composition. This invention further provides a novel hydraulic fluid composition adapted for fracturing of subterranean formations, which composition contains dialkylacrylamide ether adduct of polygalactomannan gum as a gelling agent.

Abstract: This invention provides a novel dialkylacrylamide ether adduct of polygalactomannan gum composition. This invention further provides a novel hydraulic fluid composition adapted for fracturing of subterranean formations, which composition contains dialkylacrylamide ether adduct of polygalactomannan gum as a gelling agent.

Abstract: This invention provides novel highly acidic gels of polygalactomannan allyl ether gum and sulfur dioxide. The gels exhibit dimensional stability, and are useful for oil well acidizing and borehole plugging, and for the preparation of explosive slurries.

Abstract: This invention provides novel sulfohydroxypropyl ethers of polygalactomannans having a degree of substitution between about 0.01 and 3, and further provides a process for producing sulfohydroxypropyl ethers of polygalactomannan gums by contacting solid polygalactomannan gum with 3-halo-2-hydroxypropanesulfonic acid and alkali metal hydroxide or ammonium hydroxide under alkaline conditions in an aqueous solution of water-miscible solvent.

Abstract: This invention provides novel quaternary ammonium ethers of polygalactomannan having a degree of substitution between about 0.01 and 3.0, and further provides a process for producing quaternary ammonium ethers of polygalactomannan gums by contacting solid polygalactomannan gum with a haloalkyl-substituted quaternary ammonium compound under alkaline conditions in an aqueous solution of water-miscible solvent.

Abstract: This invention provides novel allyl ethers of polygalactomannans having a degree of substitution between about 0.01 and 3, and further provides a process for producing allyl ethers of polygalactomannan gums by contacting solid polygalactomannan gum with allyl halide and alkali metal hydroxide or ammonium hydroxide under alkaline conditions in an aqueous solution of water-miscible solvent.