Abstract: Ethylene-vinyl alcohol copolymers wherein ethylene content is 10-70 mol % diad syndiotacticity is not less than 55 mol %, and intrinsic viscosity [.eta.] is not less than 0.05 l/g when measured with a mixed solvent of 85 weight % of phenol and 15 weight % of water at 30 20 C., which show less decrease of resistance to gas permeation under high temperature and high humidity, while retaining resistance to get permeation under low humidity, transparency and melt moldability, and moldings and laminates formed thereof.

Abstract: A powder mixture used for powder metallurgy containing a metal powder as a substrate, in which a copolymer comprising the following monomer ingredients as a binder is blended:______________________________________ acrylic acid ester: 20 to 70 parts by weight methacrylic acid ester: 80 to 30 parts by weight polymerizable unsaturated acid: 0.5 to 9 parts by weight based on 100 parts by weight of the sum for the acrylic ester and the methacrylic acid ester, ______________________________________as a binder is blended therewith.The powder mixture used for powder metallurgy is manufactured by mixing the starting powdery metal material with the starting powdery material for the physical property improving ingredient, adding the solution of the binder thereto and then applying stirring and drying.Graphite segregation can be prevented without de-naturing or reducing flow rate of the substrate metal and dusting upon handling can be suppressed.

Abstract: An ultrafiltration membrane formed of a polyvinyl formal resin having a recurring unit represented by the general formula (I), and a process for producing this ultrafiltration membrane: ##STR1## wherein n is 550 to 950.

Abstract: A cationic polymer composition suitable for use as a flocculating agent and as a retention aid in paper making consists of a mixture ofa) a hydrophilic cationic polymer,b) an anionic surfactant,optionally c) a water-immeriscible oil in which the polymer a) is insoluble,and, if c) is present,optionally d) a lipophilic non-ionic surfactant,optionally e) waterand optionally f) an oil-miscible polar solvent.The compositions may be prepared by water-in-oil emulsion polymerisation and are readily diluted with water.

Abstract: Stable water-in-oil emulsions of a hydrolyzed polymer of an N-vinylamide of the formula ##STR1## where R and R.sup.1 are each H or C.sub.1 -C.sub.6 -alkyl, are prepared by polymerizing a compound of the formula I, alone or as a mixture with other monoethylenically unsaturated monomers, in the form of a water-in-oil emulsion to give a water-in-oil polymer emulsion, and then hydrolyzing the polymer, hydrolysis of the polymer in the form of the water-in-oil polymer emulsion being carried out in the presence of an acid or base, and additives in the form of antioxidants, reducing agents or aldehyde acceptors being added for stabilization.

Abstract: A method for preparing an aqueous copolymer emulsion comprising the aqueous copolymerization of vinyl acetate and ethylene in the presence of a stabilizing system consisting essentially of a stabilizing effective amount of poly(ethyloxazoline).

Abstract: Anisotropic solutions are prepared from poly]2,2'-bis(trifluoromethyl)benzidine terephthalamide] in amide solvents containing certain chlorides in specified amounts. Crystalline fibers are prepared from the polymers.

Abstract: Latex caulk compositions comprising 30 to 80% filler and 20 to 70% by weight of an emulsion polymer prepared for the interpolymerization of 30 to 70 parts by weight of a vinyl ester of an alkanoic acid; 15 to 60 parts of an alkyl (C.sub.2 and C.sub.8) acrylate or dialkyl (C.sub.2 to C.sub.10) maleate; 10 to 30 parts ethylene; 1 to 5 parts olefinically unsaturated carboxylic acid; 0 to 5 parts polyolefinically unsaturated monomer and 0 to 8 parts of a copolymerizable functional monomer containing hydroxyl, amide or methylol substituents, (to total 100 parts by weight).

Abstract: This invention relates to a radiation polymerizable composition for use in a phtographic element such as a lithographic printing plate comprising in admixturea) a binder resin having the general formula--A--B--C--wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR1## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR2## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR3## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%, group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%;b) a photoinitiator; andc) a photopolymerizable mixture ofi) a polyfunctional acrylic monomer ha

Abstract: Permanently flexible and non-tacky coating mastic and caulking compositions having improved heat-age stability contain (a) at least one polymer having a T.sub.g of about -50.degree. C. to about -10.degree. C. and pendant functional groups attached to the polymer backbone and having the formula: ##STR1## in which R.sub.1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano; (b) a zinc-containing pigment (e.g. zinc oxide); and (c) a polyphosphate anion in an amount effective for increasing the wet adhesion of the compositions, particularly of aged compositions. The mastics and caulks typically have total non-volatile matter concentrations of about 60 to about 90 weight percent of which about 15 to about 75 weight percent comprises the described polymer and about 25 to about 85 weight percent is the zinc-containing pigment and other non-volatile solid matter other than the polymer such as fillers, other pigments, etc.

Abstract: An aqueous glass fiber sizing composition comprising a polyvinyl acetate film former and an effective amount of a lubricant additive having the formula:R--A).sub.m (CH.sub.2).sub.n Si--OR.sup.1).sub.3where R is an alkyl or alkenyl group of 6 to 20 carbons, A is a divalent organic --S-- OR -- NH--group, R.sup.1 is an alkyl group of 1 to 4 carbons, m is 0 or 1 and n is 0 to 10 with the proviso that when n is 0, m is also 0.

Abstract: A method for manufacturing binder for lead storage battery glass mats, characterized in that the ingredients (A) and (B) below are mixed and emulsion-polymerized:(A) an aqueous dispersion obtained by mixing the following raw materials: (a) a thermo-crosslinking monomer and (b) an alkyl (meth)acrylate ester, as necessary ingredients, and emulsion-polymerizing them;(B) a monomer mixture of a polymerizable unsaturated carboxylic acid (c) and the alkyl(meth)acrylate ester, as necessary ingredients.

Abstract: This invention provides an ethylene-vinyl alcohol copolymer composition having specific flow characteristics in the relationship between the heating time and the extrusion rate measured with a capillary rheometer (Koka Flow Tester), and a multilayered structure utilizing the same.From the EVOH composition according to the present invention, can be obtained a molded article, particularly a multilayered structure, having an excellent appearance; more particularly, in a continuous melt molding operation over a long period, a molded article, particularly a multilayered structure, having an excellent appearance can always be obtained without worsening the appearance with running time.

Abstract: Polyamines having at least two amine groups are incorporated into a polymer system comprising an anionic surfactant and a polymer having at least one anionic pendant group. The resulting polymer system typically exhibits at least one improved physical property.

Abstract: Polyamines having at least two amine groups are incorporated into a polymer system comprising an anionic surfactant and a polymer having at least one anionic pendant group. The resulting polymer system typically exhibits at least one improved physical property.

Abstract: Polymers having pendent cationic quaternary nitrogen containing groups form salts with allantoin which provide for a film forming moisture barrier in skin conditioning lotions, ointments, cosmetics conditioning treatments, and pharmaceutical formulations.

Abstract: Disclosed are an organic nonlinear optical material comprising a 4-nitrophenylaminoacetaldehyde acetal represented by the following general formula: ##STR1## and a polymeric organic nonlinear optical material comprising an acetalized polyvinyl alcohol having the above-mentioned 4-nitrophenylaminoacetaldehyde acetal as the side chain.

Abstract: The invention provides an agricultural film of a polyolefin composition from 0.02 to 0.5 part by weight of an .omega.-hydroperfluoroalkyl group-containing fluorine compound surfactant and from 0.5 to 5 parts by weight of a nonionic dripping agent per 100 parts by weight of a polyolefin resin. The agricultural film can prevent fog generation in houses, tunnels or the like in horticulture use facilities.

Abstract: Water-in-oil emulsions of cationic water-soluble copolymers which are prepared by incorporating only a portion of the cationic monomer in the aqueous phase prior to forming the water-in-oil emulsion in which polymerization will occur, forming the emulsion, adding the balance of the cationic monomer such that essentially no polymerization occurs immediately after the addition, and polymerizing the monomers. Copolymers prepared by this process show improved performance over conventionally prepared cationic copolymers.

Abstract: Novel polyvinyl alcohols include, in the polymeric backbone, vinyl units containing pendant hydrophobic groups. The polymers are made by hydrolysis of corresponding polyvinyl acylates under conditions are avoid hydrolysis of the pendant hydrophobic groups from the polymer. These groups are preferably bonded into the polymer as allyl ether units. The hydrophobic units act as internal plasticizers in films or other shaped articles formed from the polymers and, in particular, gives significant benefit in viscosity and other rheology characteristics of aqueous compositions formed from the polymer.