Abstract: An improved continuous process for producing random ethylene/acrylate/cure-site copolymers with greater efficiency by copolymerizing therewith a small quantity of certain polyfunctional monomers, such as diallyl maleate.

Abstract: A process for producing a water-insoluble polymer of uniform shape having high strength and a desired geometric form is disclosed. This process comprises the steps of dissolving or partially suspending in water (a) a water-soluble salt of alginic acid, (b) a hydrophilic, crosslinkable vinyl monomer having two or more radical-polymerizable vinyl groups per molecule, and (c) optionally a hydrophilic, radical-polymerizable vinyl monomer; bringing the resulting aqueous solution or suspension into contact with an aqueous solution capable of causing gelation of the water-soluble salt of alginic acid and thereby forming an water-insoluble gel of uniform shape; and subjecting the gel to radical polymerization to produce a water-insoluble polymer.

Abstract: A process is disclosed for producing a water-absorbent material by dispersing and suspending an aqueous solution of a water-soluble, ethylenically unsaturated monomer in a hydrocarbon or halogenated aromatic hydrocarbon in the presence of an oil-soluble cellulose ester or cellulose ether and then carrying out the polymerization using a water-soluble radical-polymerization initiator, characterized by the feature that one or more water-soluble or water-dispersible surfactants is (are) added to the system during or after the polymerization reaction.

Abstract: A method for forming a grout composition from multiple components. A first component is mixed in pre-measured amounts along with water in a first mixing tank. A first catalyst is added in pre-measured quantities to the first mixing tank. A second catalyst is mixed in pre-determined quantities with water in a second mixing tank. The aqueous solutions in the first and second mixing tanks are combined to cause a polymerization-cross-linking reaction of the first component which results in gellation of the first component.

Abstract: Novel polyimides, optionally end-capped with polymerizable or inert groups, and the polyamic acid or ester intermediates thereof are prepared by reacting a tetracarboxylic acid compound (e.g. pyromellitic dianhydride or 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride or its methyl diester) with diamines having the general formula ##STR1## wherein Z is oxygen or sulfur, X and/or Y are carbonyl or carbinol groups, the amine groups may be in the 2-, 3-, and/or 4-position, and isomerism is present when X and/or Y is a carbinol group. The polyimides may be end-capped by reaction, during or after their formation, with polymerizable groups such as 3-aminophenyl acetylene or 3,6-endomethylene-1,2,3,6-tetrahydrophthalic anhydride. The diamines are novel classes of amines when Z is sulfur and when Z is oxygen and X, Y, or X and Y are carbinol groups.

Abstract: Copolymers comprising acrylic ester units, dicarboxylic compounds units and diisobutylene units and whose average molecular weight by number is from 500 to 250,000 are useful for improving the cold-flow properties of lube oils and other hydrocarbon oils such as diesel oil, heavy fuel oil, residual fuel oil and crude petroleum.

Abstract: Polymeric material comprising at least four polymeric constituents which comprise mer units of the following types:I acrylamide or derivatives thereofII acrylonitrile or derivatives thereofIII acrylic acid and esters, or derivatives thereofIV alkylol, sulphonyl or phosphonyl derivatives of I.The polymeric materials are useful as components of water bearing systems which are in the form of gels or suspensions.

Abstract: Adsorbents are provided for the affinity-specific separation of macromolecular materials, particularly biopolymers, the adsorbents comprising a polymeric carrier on to which an affine residue for the macromolecular material is covalently bound, either directly or via polymeric spacer. Preferred affine residue is comprised of a specific complex formers which are base-specific and/or structure specific for the macromolecular material. The invention also provides novel complex formers comprising a certain dyestuff residues and processes for their preparation.

Abstract: Novel acrylic polymers with pendant unsaturation are disclosed. Also disclosed is a wide variety of amine-containing acrylic resinous compositions prepared therefrom. These compositions are useful for coating applications, particularly cationic electrodeposition. An inexpensive method of preparing the resinous compositions of this invention is provided.

Abstract: This invention relates to an improvement in a mixture which is polymerizable by radiation and contains, as the essential constituents, (a) a polymeric binder, (b) a polymerization initiator which can be activated by radiation, and (c) a compound of the formula I ##STR1## in which R.sub.1 is a divalent aliphatic group having 1 to 15 carbon atoms which also can be partially replaced by hetero-atoms, a divalent cycloaliphatic group having 3 to 15 carbon atoms, or a mixed aliphatic-aromatic group having 7 to 15 carbon atoms, and A is an electron-attracting radical. The invention also relates to a radiation-sensitive resist material using the improved radiation-polymerizable mixture.

Abstract: A copolymer having good properties for use as a pressure-sensitive adhesive from an aqueous dispersion comprising:(a) from 10% to 30% by weight of ethylene units,(b) from 29% to 69% by weight of acrylic ester units,(c) from 20% to 55% by weight of vinyl acetate units,(d) from 0.2% to 8% by weight of (meth)acrylamide units, and(e) from 0 to 12% of other olefinically-unsaturated monomer units copolymerizable with the above,said copolymer having a glass transition temperature of from -20.degree. C. to -60.degree. C. and a K-value according to Fikentscher, measured in tetrahydrofuran, of from 50 to 180; as well as processes to make the same and aqueous dispersions of the same for use as pressure-sensitive adhesives.

Abstract: The specification discloses a polymer of ethylenically unsaturated monomers wherein the polymer comprises diamide mer units having pendant unsaturated, air-curable alkyl groups. Methods of making and using the polymers and articles made therefrom are taught. The polymer may be used in coating, bonding or adhering to substrates. Of particular importance are uses in paint compositions and in caulk compositions. The air-curable alkyl diamide mer unit is derived from an unsaturated drying oil. Aqueous coating compositions are disclosed in which the polymer is an ammonia or amine salt, in solution, and is either the sole polymeric vehicle or is combined with a water insoluble polymer latex.

Abstract: Hydrocolloidal dispersions of random interpolymer compositions that have a capacity for absorbing water in amounts of from 10 to 125 times their own weight or greater and are also bacteriostatic are prepared by the polymerization in aqueous medium of a mixture of monomers comprising (1) up to about 90% by weight of an ester of an .alpha.,.beta.-olefinically unsaturated carboxylic acid and a monohydric or polyhydric alcohol having a terminal quaternary ammonium group and (2) at least one .alpha.,.beta.-olefinically unsaturated comonomer in the presence of a crosslinking agent comprising a difunctional monomer derived from an .alpha.,.beta.-olefinically unsaturated carboxylic acid. The interpolymer compositions can be used for binding or coating nonwoven fabrics including paper to improve water absorbency, or cast into a structurally self-supporting film.

Abstract: This invention relates to bonnets for making contact lenses and contact lenses having high gas permeability shaped from a polymer selected from (a) polymers consisting essentially of the polymerization reaction products of one or a combination of different alkyl styrene monomers with one or more alkyl substituents on the aromatic ring and an unsubstituted vinyl group, and optionally at least one compatible cross-linking monomer, (b) polymers consisting essentially of the polymerization reaction products of at least one alkyl styrene monomer as defined in (a) with one or a combination of other styrene monomers selected from styrene, styrene with an alkyl substituent on the vinyl group only, and styrene with both an alkyl substituent on the vinyl group and one or more alkyl substituents on the aromatic ring, and optionally at least one compatible cross-linking monomer and (c) polymers consisting essentially of the polymerization reaction products of one of the styrenes defined in (a) and (b) or combinations the

Abstract: Cationic amine functional copolymers which are stably dispersible in water with the aid of water miscible organic solvent, and which cure to provide superior detergent and corrosion resistance are provided by forming a solution copolymer of monoethylenically unsaturated monomers including from 3% to 35% of monomer having a basic amino groups and from 35% to 50% of isobutoxymethyl acrylamide or methacrylamide, the copolymer being neutralized up to about 90% with a solubilizing acid to render the copolymer cationic and dispersible in water.

Abstract: Discrete, spheroidal microgels of a water-swollen or water-swellable, cross-linked polymer such as cross-linked polyacrylamide are particularly useful as thickening agents for aqueous dispersions to be subjected to high shear and as agents for reducing the permeability of porous structures.

Abstract: An aerobic composition which comprises (A), (B), (C), (D) and (E) and which begins to polymerize upon coming in contact with oxygen, wherein said components are;(A): at least one compound selected from (1) trivalent cerium compounds and (2) chelated trivalent cerium compounds,(B): when (A) is (1) a compound capable of forming a chelate with trivalent cerium ion and with tetravalent cerium ion and when (A) is (2), a compound capable of forming a chelate with tetravalent cerium ion,(C): at least one reducing sulfur compound capable of producing ions represented by S.sub.x O.sub.y.sup..dbd., wherein x and y are integers such that 1.ltoreq.x.ltoreq.6 and 1.ltoreq.y.ltoreq.7, or R.sub.6 SO.sub.2.sup.- ions, wherein R.sub.6 is an alkyl group of 1-15 carbon atoms, C.sub.6 H.sub.5 (CH.sub.2).sub.n.sup.- (wherein n is 1-3) or Y-C.sub.6 H.sub.4 (wherein Y is H, CH.sub.3, Cl, Br, CN, CH.sub.3 O, C.sub.2 H.sub.5 O, CH.sub.3 CONH, NO.sub.

Abstract: The invention relates to preparation of synthetic macroporous ion-exchanaging materials by a ternary copolymerization of hydrophilic monomers containing non-ionogenous groups with monomers containing ionogenous groups and cross-linking monomers in an aqueous dispersion in the presence of inert components and suspension stabilizers. Hydroxyalkyl, oligoglycol and polyglycol esters and N-substituted or unsubstituted amides of acrylic and methacrylic acid are used as the hydrophilic monomers; compounds CH.sub.2 .dbd.C(R)COX, where R = H or CH.sub.3, X = --OR.sub.1 N(R.sub.2)R.sub.3, --OR.sub.1 SO.sub.3 H, --NHR.sub.1 N(R.sub.2)R.sub.3 or --HNR.sub.1 SO.sub.3 H, R.sub.1 = alkylene and R.sub.2 and R.sub.

Abstract: A process for producing carboxyl cationites which comprises dissolution of comonomers such as methacrylic or acrylic acid and a vinyl-containing amide such as hexahydro-1,3,5-triacryloyltriazine, N, N'-methylenediacrylamide, N, N'-ethylenedimethacrylamide or N, N'-hexamethylenedimethacrylamide as well as an initiator of radical polymerization in a 5-50% acetic acid. Weight ratio between the unsaturated carboxylic acid and vinyl-containing amide is varied from 3:1 to 12:1; concentration of said comonomers in a 5-50% acetic acid is varied within the range of from 10 to 30%. The resulting reaction mixture is dispersed in polyethylsiloxane or polymethylphenylsiloxane liquid at a weight ratio between the reaction mixture and said silicone liquid ranging from 1:3 to 1:5 respectively. Thereafter, copolymerization is effected in a suspension at a temperature ranging from 20.degree. to 100.degree. C.

Abstract: Hydrocolloidal dispersions of random interpolymer compositions that have a capacity for absorbing water in amounts of from 10 to 125 times their own weight or greater and are also bacteriostatic are prepared by the polymerization in aqueous medium of a mixture of monomers comprising (1) up to about 90% by weight of an ester of an .alpha.,.beta.-olefinically unsaturated carboxylic acid and a monohydric or polyhydric alcohol having a terminal quaternary ammonium group and (2) at least one .alpha.,.beta.-olefinically unsaturated comonomer in the presence of a crosslinking agent comprising a difunctional monomer derived from an .alpha.,.beta.-olefinically unsaturated carboxylic acid. The interpolymer compositions can be used for binding or coating nonwoven fabrics including paper to improve water absorbency, or cast into a structurally self-supporting film.

Abstract: A gel polymer of vinyl compounds suitable for use as a coating is prepared by mixing the following four components [A], [B], [C] and [D],Component [A], an aqueous composition comprising an aqueous solvent and at least one selected from the group consisting of water-soluble or water-dispersible vinyl compounds,Component [B], at least one compound having at least one functional group selected from the groups consisting of hydroxyl group, amino group, quaternary ammonium group, aldehyde group, mercapto group and a group capable of producing a hydroxyl group aldehyde group, mercapto group or amino group in an aqueous medium,Component [C], at least one compound capable of producing ferric ion or ceric ion in an aqueous medium and,Component [D], at least one sulfur compound capable of producing S.sub.x O.sub.y.sup.

Abstract: A well acidizing or fracturing composition is prepared by adding to an aqueous acid solution or emulsion or fracturing composition, a cross-linked copolymer of a sulfonic acid-modified acrylamide and a polyvinyl cross-linking agent. The cross-linked copolymer functions as an effective fluid loss additive and/or diverting agent. From about 25 pounds to about 100 pounds of the additive is utilized per 1000 gallons of the aqueous acid solution or acid emulsion.

Abstract: Cross-linked water-swellable polymers are described, having a particle size of less than 4 microns. They are used as thickening agents for aqueous dispersions or solutions, particularly useful where high shear conditions are encountered in the application.

Abstract: Biocompatible polymeric microspheres having an average diameter below about 3 microns and having density at least 15% greater or lesser than organic cells and having covalent binding sites are provided in accordance with this invention. The microspheres are obtained by copolymerizing a hydroxy or amine substituted acrylic monomer such as hydroxyethylmethacrylate with a light or dense comonomer such as a fluoromonomer. A lectin or antibody is bound to the hydroxy or amine site of the bead to provide cell specificity. When added to a cell suspension the marked bead will specifically label the cell membrane by binding to specific receptor sites thereon. The labelled membrane can then be separated by density gradient centrifugation.

Abstract: Highly durable coatings are formed by the photopolymerization of screen printing inks containing aryloxyalkyl acrylate monomers or prepolymers, a polymerizable diluent and a free-radical initiating system, such inks having a viscosity of 5,000 to 200,000 centipoises and a thixotropic index of from 1 to 6. The photopolymerizable inks are useful for coating substrates, such as printed circuits, and serve as solder masks and resists for electroless plating, electroplating and etching.

Abstract: Linear addition polymers of a compound of the formula ##EQU1## wherein R.sup.1, R.sup.2 and R.sup.3 are hydrogen or alkyl having 1 to 5 carbon atoms, said polymers being thermally crosslinkable at temperatures below 100.degree.C. to produce moulded products, lacquers and coatings and to fix pigments to fibers and films of natural and synthetic origin.