Abstract: A polyamide composition of improved impact resistance comprising a blend of components (A) a graft polymer of a (meth)-acrylate and/or (meth)-acrylonitrile and a vinylaromatic monomer grafted onto a substrate rubber, (B) a polyamide resin, (C) an acid-containing acrylate copolymer rubber and (D) an effective amount of an acid-containing polymer to improve the impact resistance of the polymer blend.

Abstract: A hot melt adhesive applicator capable of dispensing relatively large volumes of molten adhesive at relatively fast rates, comprising a barrel and rotary valve block mounted in a housing and a rotary valve to control the flow of the molten adhesive through the barrel. Heaters attached to the barrel maintain the adhesive in the molten state. Advantageously an arm may be mounted on the spindle of the rotary valve, capable of being moved manually, by electrical or mechanical means to open and close the valve. Compression seals mounted on the valve spindle prevent seepage of molten thermoplastic from the valve block. The passage in the rotary valve can be selected to provide a low pressure drop in the applicator.

Abstract: A resin and method for using the resin for solid phase peptide synthesis. The resin has a sulfoxide linkage, which is stable to strong acid conditions. The sulfoxide linkage can be reduced to a sulfide linkage, which allows cleavage of the peptide from the resin under mild acid conditions.

Abstract: A resin and method for preparing the resin for solid phase peptide synthesis. The resin has a sulfoxide linkage, which is stable to strong acid conditions. The sulfoxide linkage can be reduced to a sulfide linkage, which allows cleavage of the peptide from the resin under mild acid conditions.

Abstract: A process for the preparation of substituted aromatic amines comprising (1) contacting a primary aromatic amine with an oxidizing agent in a homogeneous solution containing water, an oxidizable water-miscible organic solvent and a base, and (2) reducing the solution with a reducing agent to produce the substituted aromatic amine.

Abstract: Preparation of sorbic acid from precursors by contact with acid catalysts is improved by utilizing crystallization to separate sorbic acid during the preparation.

Abstract: Butadiene and acetic acid are reacted with metal ion oxidant to prepare acetoxyhexenoic acids which are then converted to sorbic acid.

Abstract: A polyamide composition of improved impact comprising a blend of components (A) 20 to 79.5 weight percent of a graft rubber composition of a graft polymer of methyl (meth)acrylate and/or (meth)acrylonitrile and a vinylaromatic monomer grafted onto a substrate rubber, (B) 94.5 to 20 weight percent of a polyamide resin, an (C) 1 to 60 weight percent of a polymer compatibilizer which contains from about 0.05 to 4.0 mole percent of a comonomer containing a functional group which reacts with the polyamide resin.

Abstract: This disclosure concerns acyloxyhexenoic acids and their salts with the acids being produced by reaction of butadiene and acetic acid with metal salt oxidants in a process involving electrolytic regeneration of the metal oxidants during the reaction. Iosmeric acetoxyhexenoic acids produced can be readily converted to sorbic acid, and antimicrobial and preservative uses for the acids are also disclosed.

Abstract: Perfluoroalkanoic acids and perfluoroalkanols are prepared by electrolysis of perfluoroalkyl chlorides in the presence of carbon dioxide or an aldehyde, for example, trifluoroacetic acid is obtained from chlorotrifluoromethane and carbon dioxide while trifluoroethanol is obtained from chlorotrifluoromethane and formaldehyde.

Abstract: A class of epoxy compounds, (i.e. polyglycidamides) are blended with polyamines and other epoxy reactive oligomers to provide crosslinkable coating systems. When the systems are cured they are tough and abrasion resistant, possess solvent, chemical and water resistance and UV stability.

Abstract: Crystallizable hot melt adhesive compositions comprising block copolyesteramides and alkali metal salts of carboxy polymers. The block copolyesteramides comprise hard or crystalline polyester blocks and soft or amorphous polyamide blocks in the weight ratio of 2:3 to 4:1. The alkali metal salts are salts of copolymers of C.sub.1 to C.sub.4 aliphatic olefins and acrylic or methacrylic acid or salts of copolymers of aromatic olefins and maleic anhydride and provide a concentration of alkali metal cation in the range of 0.1 to 15 meq per 100 parts by weight of copolyesteramide. The hot melt adhesive compositions are useful for bonding plastic parts to form plastic structures which are relatively free of bond line distortion.

Abstract: Molding compositions are prepared from blends of (A) a styrene-maleic anhydride-methyl methacrylate terpolymer; (B) an ABS or MBS polymer; and (C) a polycarbonate. Component A, the styrene-maleic anhydride-methyl methacrylate terpolymers may optionally contain a rubber component.

Abstract: A process for preparing improved low temperature curable coating compositions comprising (1) forming a solution of an alkoxymethylmelamine and a styrene-allyl alcohol copolymer in a solvent and (2) adding to the solution a solution of a hydroxy-containing resin.

Abstract: Crystallizable hot melt adhesive compositions comprising block copolyesteramides and alkali metal carboxylates. The block copolyesteramides comprise hard or crystalline polyester blocks and soft or amorphous polyamide blocks in the weight ratio of 2:3 to 4:1. The alkali metal carboxylates provide a concentration of alkali metal cation in the range of 0.1 to 6 meq per 100 parts by weight of copolyesteramide. The hot melt adhesive compositions are useful for bonding plastic parts to form plastic structures which are relatively free of bond line distortion.

Abstract: The present invention provides compositions which comprise a blend of: p0 (a) from about 10 to about 97 percent by weight of the composition of a polyamide resin having a minimum molecular weight of about 5,000; p0 (b) from about 3 to about 90 percent by weight of the composition of an elastomeric polymer which(1) is selected from a group consisting of poly(ethylene oxide), poly(propylene oxide), polycaprolactone, polytetrahydrofuran, polybutadiene, polyisoprene, polyisobutylene, poly(C.sub.1 -C.sub.8 alkylene acrylate), poly(C.sub.1 -C.sub.4 dialkylene siloxane), poly(ethylene-co-propylene), poly(ethylene-co-carbon monoxide), polyethylene-co-vinyl chloride, and poly(ethylene-co-vinyl acetate) polymers and copolymers and combinations thereof; and(2) contains a minimum of about 0.055 milliequivalents of acyllactam groups per gram of said elastomeric polymer.

Abstract: Apparatus for dispensing a hot melt thermoplastic consists of a hopper containing granular thermoplastic, an extruder for melting the molten thermoplastic and delivering it to a manifold and then to an applicator for dispensing the molten thermoplastic. Optionally an accumulator can be attached to allow the molten thermoplastic to accumulate during off-periods of the applicator. Operation of the applicator controls operation of the extruder and the accumulator.

Abstract: A process for bonding a reinforced plastic structure which comprises coating reinforced plastic parts of sheet molding compounds or bulk molding compound with a primer coat and bonding together with a thermoplastic block copolymer.

Abstract: A molding composition comprising: (1) a polyamide resin; (2) a maximum of 10 percent by weight of the composition of carbon black; and (3) a maximum of less than about 20 percent by weight of the carbon black of a copper phthalocyanine pigment.

Abstract: A process for preparing an improved low temperature curable water dispersed coating compositions comprising (1) forming a solution of an alkoxymethylmelamine and a styrene-allyl alcohol copolymer in a polar solvent and (2) adding to the solution an aqueous solution or dispersion of a hydroxyl-containing resin.