Abstract:
Hydroxy-functional allyl terpolymers are disclosed. The terpolymers comprise recurring units of an allyl ester, an allylic alcohols or propoxylated allylic alcohol, and a vinyl monomer. The high hydroxyl group content and favorable solubility characteristics make the terpolymers easy to formulate into many polymer products, including polyurethanes, polyesters, melamines, alkyds, uralkyds, and other thermoset polymers.
Abstract:
Copolymers based on ethylenically unsaturated dicarboxylic anhydrides, long-chain olefins and fluoroolefins Copolymers containing 10 to 60% by weight of bivalent structural units of the formula A ##STR1## wherein R.sup.1 and R.sup.2, independently of one another, are hydrogen or C.sub.1 -C.sub.6 -alkyl,a and b are zero or one and a+b is one,X and Y are identical or different and are the group --N--HR.sup.3,where R.sup.3 is C.sub.1 -C.sub.40 -alkyl, C.sub.3 -C.sub.40 -alkenyl, C.sub.5 -C.sub.20 -cycloalkyl or C.sub.6 -C.sub.18 -aryl, the group --N--(R.sup.3).sub.2,where R.sup.3 are identical or different and have the abovementioned meaning, and/or the group --O--R.sup.4,where R.sup.4 is hydrogen, an alkali metal cation, one equivalent of an alkaline earth metal ion, a cation of the formula H.sub.2 N.sup..sym. (R.sup.3).sub.2 or H.sub.3 N.sup..sym. R.sup.3, C.sub.1 -C.sub.40 -alkyl, C.sub.5 -C.sub.20 -cycloalkyl or C.sub.6 -C.sub.18 -aryl, 30 to 89% by weight of bivalent structural units of the formula B ##STR2## wherein R.sup.5 is hydrogen or C.sub.1 -C.sub.4 -alkyl andR.sub.6 is C.sub.6 -C.sub.40 -alkyl or C.sub.6 -C.sub.18 -aryl, and1 to 20% by weight of bivalent structural units of the formula C ##STR3## wherein n is a number from 6 to 24.The invention also relates to a process for the preparation of these copolymers and to the utilization thereof.
Abstract:
Copolymers of vinyl or vinylidene halides and vinyl esters of C.sub.2 and C.sub.3 acids are provided having low molecular weights, good particle characteristics, and improved melt flow are made by aqueous polymerization utilizing an effective amount of a mercaptan as a chain transfer agent, wherein the chain transfer agent is admixed with the vinyl esters to form a chain transfer composition, and may be added before the start of the polymerization.
Abstract:
The invention relates to new copolymers of alkenyl phenol or alkenyl phenol ether in combination with alkenyl silanes. These copolymers are useful positive photoresists.
Abstract:
A method for preparing a stable vinyl chloride based resin emulsion which comprises a copolymer colloidally dispersed in an aqueous medium, the copolymer having a Tg from 0.degree. to 50.degree. C., about 65 to 90 wt% vinyl chloride, about 5 to 35 wt% ethylene, 0 to 10 wt% olefinically unsaturated copolymerizable monomer and prepared by emulsion polymerization of vinyl chloride, ethylene and, optionally, an olefinically unsaturated comonomer in the presence of about 3 to 15 wt% polyvinyl alcohol as the dispersing agent, the polymerization method comprising(a) forming an aqueous emulsion reaction mixture containing substantially all the polyvinyl alcohol and a portion, preferably at least 5%, of the total vinyl chloride monomer,(b) pressurizing the reaction mixture with an ethylene pressure sufficient to provide the copolymer with a 5 to 35 wt% ethylene content,(c) initiating the reaction mixture by the addition of a free radical generating source and continuing polymerization until the rate of polymerization begins to decrease to provide a prepolymer emulsion, and(d) adding the remaining vinyl chloride at a substantially uniform rate and continuing polymerization until the polymerization reaction is no longer self-sustaining, ethylene being neither withdrawn nor added during the polymerization in one embodiment.
Abstract:
A process for the production of polymers of vinyl chloride by suspension polymerization, uses as the suspension stabilizer either(A) a methylhydroxypropylcellulose with a methoxy substitution degree of 20-32%, a hydroxypropoxy substitution degree of 2-10%, and a viscosity of 30-70 mPa.s; and/or(B) a suspension agent combination consisting essentially of:(a) methylcellulose with a methoxy substitution degree of 22-34% and a viscosity of 7-20 mPa.s, and(b) methylcellulose with a methoxy substitution degree of 22-34% and a viscosity of 50 mPa.s-4,000 mPa.s and/or methylhydroxypropylcellulose with a methoxy substitution degree of 20-32%, a hydroxypropoxy substitution degree of 2-10%, and a viscosity of 100-3,000 mPa.s, and polymerizes in the presence of 0.4-8% by weight of an ethylene-vinyl acetate copolymer. The resultant polymers are suitable for lowering viscosity of polyvinyl chloride plastisols.
Abstract:
An aqueous dispersion of vinylidene chloride resin which, when coated onto a synthetic resinous film substrate, has the combined properties of: (1) good adhesion to the substrate; (2) good adhesion of a printing ink to the coating; (3) satisfactory barrier to gases (especially oxygen) and water vapor; and (4) a high resistance to boiling water treatment. The vinylidene chloride resin must also have polymerized therein methyl methacrylate, methacrylonitrile and methacrylic acid. A total amount of methacrylic acid must be between 1.times.10.sup.-4 and 3.times.10.sup.-4 moles of methacrylic acid per gram of polymer solids. A portion of the total amount of methacrylic acid exists in a form titratable with a 1/20 Normal aqueous solution of sodium hydroxide. The portion must be the less of (a) about 1.3.times.10.sup.-4 moles per gram of polymer solids or (b) about 60 percent of the total amount.
Abstract:
An acrylonitrile polymer comprising acrylonitrile, at least one of vinyl chloride and vinylidene chloride, a sulfo group-containing vinyl monomer having a higher reactivity ratio than acrylonitrile and a methallyl sulfonic acid monomer, which is prepared by conducting a polymerization in a manner such that at least half amount of the methallyl sulfonic acid monomer to be used is added to the polymerization system in a substantial period of adding the sulfo group-containing vinyl monomer having a higher reactivity ratio than acrylonitrile to the system. The acrylonitrile polymer is suitable for the preparation of a modacrylic synthetic fiber, and the modacrylic fiber prepared therefrom has excellent flame resistance, devitrification preventing property and dyeing affinity.
Abstract:
A composition for an interlayer film of a laminated safety glass, said composition comprising (A) a thermoplastic resin resulting from copolymerization of (1) vinyl chloride, (2) glycidyl methacrylate and (3) at least one monomer selected from the group consisting of ethylenic hydrocarbons, vinyl esters of fatty acids, acrylic esters and vinyl ethers, and (B) a plasticizer.
Abstract:
A composition for an interlayer film of a laminated safety glass, said composition comprising (A) a thermoplastic resin resulting from copolymerization of (1) vinyl chloride, (2) glycidyl methacrylate and (3) at least one monomer selected from the group consisting of ethylenic hydrocarbons, vinyl esters of fatty acids, acrylic esters and vinyl ethers, and (B) a plasticizer.