Abstract: This invention is directed to a process for preparing copolymers of ethylene with certain alpha olefins and nonconjugated dienes. The novel aspect of this invention relates to a catalyst system comprising a vanadium tetrachloride catalyst in conjunction with a cocatalyst comprising equimolar quantities of ethyl aluminum dichloride and tri-isobutyl aluminum. Isobutyl aluminum dichloride may be substituted for the ethyl aluminum dichloride. The product prepared by this process has a high number average molecular weight and is high in tensile strength when compounded with carbon blacks or mineral fillers and extender oils. Additionally, the polymer of this invention exhibits a rapid cure rate. Since the product further exhibits a narrow molecular weight distribution and low crystallinity, there is a greatly reduced die swell upon extrusion. The combination of the high molecular weight, narrow molecular weight distribution and low crystallinity produce a vulcanized product of low compression set.

Abstract: This patent describes a method of catalyzing the reaction of organic polybasic acid anhydrides with at least one oxirane which comprises carrying out the reacton in the presence of an effective catalytic amount of a synergistic catalyst mixture comprising an active chromium III tricarboxylate salt haing unoccupied coordination sites and any compound capable of polarizing the carboxlyic acid anhydride to yield a reactive carboxylic acid moiety.

Abstract: This invention relates to the preparation and use of durable press fabrics with strong acid grafts. The preparation is accomplished by the incorporation of a reactive hydroxyalkyl sulfonic or phosphinic acid in a crosslinking finishing system. As a consequence of this, durable press fabrics are produced with sulfonic or phosphinic acid grafts. Because of these strong acid grafts, these fabrics show improved moisture regain properties, can be dyed with basic dyes, can be whitened with basic optical brighteners and have ion exchange properties for metallic cations.

Abstract: Peroxygen chemicals are activated, in laundering operations conducted below 80.degree.C, by using as activators certain isophorone derivatives, to wit, the isophorone enol acetates and isophorone oximinoacetate.

Abstract: Copolymers of ethylene and vinyl acetate which contain additionally activated halogen atoms as sites for sulfur vulcanization, and the sulfur vulcanized elastomer obtained therefrom.

Abstract: Improvement in strength and elimination of coloration are achieved in fabrics finished for durable press properties by treatment with an N-methylol amide crosslinking agent and aluminum sulfate catalyst when sodium dihydrogen phosphate is included in the finishing formulation. These effects are achieved when the weight ratio of sodium dihydrogen phosphate to aluminum sulfate is 2.05.

Abstract: Polymeric compositions comprising the product of the addition polymerization of N-vinylcarbazole and at least one member selected from the group consisting of N-vinylphthalimide and the isostructural modifications thereof. Many of the above polymeric products are photoconductive and, thus, are suitable for use in electrophotography.

Abstract: Perphthalic acid solutions remove discoloration from heat-cured phosphonate-treated fabrics.

Abstract: A perfluoroalkylene oxide dinitrile, an aromatic dinitrile N-oxide and an aromatic trinitrile are terpolymerized to obtain a poly(perfluoroalkylene oxide) oxadiazole containing pendent aromatic nitrile groups. The fluorinated polymer product can be cured with a polyfunctional nitrile N-oxide to provide elastomers that are particularly useful in aircraft applications involving use temperatures ranging from about -70.degree.F to about 400.degree.F. For example, the elastomers can be employed as fuel tank sealants, coatings, O-ring seals, diaphragms, and the like.

Abstract: Improved impact strength of copolymers of acrylonitrile and styrene prepared in the presence of a diene rubber is achieved by presoaking the diene rubber with part of the acrylonitrile and styrene monomers prior to conducting the graft polymerization reaction.

Abstract: Hydroxy-terminated polymers of butadiene having two hydroxy groups per molecule are prepared by polymerizing butadiene in a chain transfer solvent at a temperature of from about 50.degree. to about 170.degree.C. with t-butyl beta-hydroxyethyl peroxide as an initiator.

Abstract: Vinyl chloride is removed from wet cakes that comprise a vinyl chloride polymer, vinyl chloride, and water by contacting the wet cakes with steam, preferably at atmospheric pressure and at a temperature in the range of 100.degree. to 125.degree.C.

Abstract: Textiles are impregnated with a solution of dimethylol dihydroxyethylene urea or a partially or wholly methylated derivative thereof, phosphoric acid as catalyst and sodium metaborate as buffering agent. Impregnated textile is heated to cure the solution and impart crease-resistance to said textile.

Abstract: A process for preparing a resin suitable for preparation of sizes, which comprises polymerizing a cracked oil fraction which is obtained by the thermal cracking of petroleums, has a boiling point of 20.degree. to 220.degree.C., and contains diolefins, thereby to form a hydrocarbon resin, reacting the resulting hydrocarbon resin with an unsaturated dicarboxylic acid or its anhydride, and heating the acid-modified resin in the presence of water or an alkali metal hydroxide at a temperature of 130.degree. to 350.degree.C.

Abstract: Textile fabrics have been bleached with aqueous solutions of hydrogen peroxide for many years. Since hydrogen peroxide is quite unstable under bleaching conditions, stabilizers have been necessary and silicate of soda, commonly called water glass, is the stabilizer commonly used in the industry. Water glass has a number of disadvantages when used in commercial bleaching of textiles. This invention provides new processes for bleaching textile fabrics with aqueous solutions of hydrogen peroxide containing sodium orthosilicate in combination with a magnesium ion-polyphosphate ion stabilizer and new compositions of matter comprising aqueous solutions of hydrogen peroxide containing an effective amount of sodium orthosilicate and magnesium-polyphosphate stabilizer.

Abstract: Ethylene-maleic anhydride interpolymers of improved hydrolytic and electrolytic stability are produced by cross-linking with about 0.35 to about 0.55 mol percent of triallyl isocyanurate based upon the maleic anhydride monomer.

Abstract: A thermoplastic bottle having a unique combination of properties. The bottle is characterized by a very high level of molecular orientation, and possesses the properties of high impact strength, low gas permeability and excellent resistance to creep strain under tensile load. A blowing process for fabricating the bottle is also taught which features a means for substantially improving the resistance to creep strain.

Abstract: A dispersion is described of block copolymer particles in a saturated aliphatic hydrocarbon diluent, the block copolymer consisting of a thermoplastic tertiary butyl styrene polymer block A of molecular weight 10,000-100,000 which is soluble in the diluent, an elastomeric conjugated diene polymer block B of molecular weight 1,000-100,000 which is terminally attached to block A, and a styrene homopolymer or copolymer block C of molecular weight 20,000-1,000,000 which is terminally attached to block B, is insoluble in the diluent and forms at least part of the core of the particles. The particles may be separated from the diluent while retaining their previous molecular organization, i.e. with the insoluble block C present in the core of the particles and the thermoplastic block A remote from the core, and may be converted by hot pressing into shaped articles having impact resistance.

Abstract: In the known process of manufacturing an amphoteric polymeric composition which process comprises firstly polymerising a mixture comprising a monomer containing a basic group and a monomer containing an acidic group, the improvement of carrying out the process in the presence of a solvent system comprising formic acid.

Abstract: A copolymer suitable for making self-extinguishing fibers, containing at least 50 wt.% acrylonitrile, from 2 to 30 wt.% vinyl or vinylidene chloride, from 0 to 10 wt.% of a neutral, ethylenically unsaturated, non-halogenated monomer and from 2 to 40 wt.% of alpha-bromoacrylonitrile.