Abstract: A molding composition is provided which is effective as an agent for imparting compatibility in thermoplastic blends or as an adhesion-promoting layer in composite materials which comprises:A. a polyamideB. a polyester, andC. an oxazoline derivative.

Abstract: Fluorine-containing thermoplastic elastomeric compositions comprising: (A) a continuous phase comprising: (1) about 0 to 90 weight percent of thermoplastic polymer having a melt temperature or glass transition temperature greater than about 150.degree. C., and (2) about 10 to 100 weight percent of block thermoplastic elastomer having a melt temperature greater than about 150.degree. C.; and (B) a disperse phase comprising particles or domains of cured, fluoroelastomer composition. Such compositions are preferably prepared by dynamically vulcanizing the ingredients of the fluorine-containing thermoplastic elastomeric composition.

Abstract: An oriented, shaped article comprising at least about 55% and less than about 80% by weight of a first polymer phase of at least one lyotropic polymer and at least about 20% and less than about 45% by weight of a second polymer phase of at least one thermally-consolidatable polymer and consolidated parts made therefrom.

Abstract: Disclosed are novel nitrogen containing heterocyclic compounds and novel vinyl terminated polyurethane/polyamide polymers together with the use of both of these compounds in a novel adhesive and coating composition. The nitrogen containing heterocyclic compounds of the invention contain two vinyl-terminated substituents and at least one carbamylmethyl substituent and have a nucleus selected from melamine, oligomers of melamine, benzoguanamine, and oligomers of benzoguanamine, glycoluril and oligomers of glycoluril. The vinyl terminated polyurethane compounds of the invention have a molecular weight of from about 3000 to about 80000, and contain at least two vinyl end groups.

Abstract: Disclosed are compositions and process for the improving the rate of crystallization of polyamide containing compositions which comprise two polyamides having dissimilar melting temperatures, said process comprising the steps of heating the two polyamides to a temperature which is above the melting point of the polyamide having the lower melting temperature but below the melting temperature of the polyamide having the higher melting temperature, as well compositions made in accordance with the process. Preferred polyamides include polycaprolactam and polyhexamethylene adipamide, and the said compositions may optionally include further constituents. The process provided for improved nucleation without the necessity of inorganic nucleation promoters or agents, and articles made in accordance to the process exhibit good physical properties.

Abstract: An adhesive composition particularly useful for bonding a heat-recoverable polymeric sleeve around a cable splice to form a cable splice case comprises a polyamide and a copolymer of ethylene and an ester of an ethylenically unsaturated carboxylic acid, said copolymer having a melt flow index of at least 40 as measured according to ASTM D12380-70; the amount of copolymer being at least 38% based on the weight of the polyamide.

Abstract: Halide polymer such as polyvinylchloride and polyamide are melt blendable when the melt blending is carried out at a temperature of no greater than about 220.degree. C. and the polyamide has a processing temperature no greater than the temperature of melt blending and the melt blend also incorporates a carboxyl and/or CO-functional ethylene polymer which compatibilizes the PVC and polyamide one with the other.

Abstract: A composition for improving the wet strength of cellulosic fibrous webs is comprised of an aminopolyamide-epichlorohydrin acid salt resin having an E/N ratio of from about 0.6 to about 2.0 and from about 1% to about 35% of a water soluble cationic polymer based on the weight of the resin. The composition has a total organic chlorine content of from about 0.5% to 1.0% by weight based on the weight of the aminopolyamide-epichlorohydrin acid salt resin.

Abstract: Polyamide-hydrogenated polybutadiene-acrylonitrile block copolymers having high solubility in organic solvents, good compatibility with other polymers, and excellent thermal resistance and adhesive properties are characterized by comprising block units (A) represented by the following formula (I) and block units (B) represented by the following formula (III): ##STR1## wherein Bu is hydrogenated butadiene radical, R is divalent organic radical, R' is a divalent aromatic group having a hydroxyl group, Ar is an aromatic divalent group represented by the following formulae (1)-(6): ##STR2## each of k and z is an average polymerization degree where k is an integer of 2-400, and z is an integer of 5-100, m and n are molar fractions in the copolycondensation, where m.gtoreq.0.04, and m+n=1, and x and y are molar fractions in the copolymerization, where x:y=0.95:0.05 to 0.6:0.4, and x+y=1, and block units (A) and (B) are contained in the range of 2 to 20, respectively.

Abstract: An adhesive composite including a compatibilized composition comprised of at least one polyamide, and at least one propylene polymer which is at least partially modified by a polar monomer and which has a melt flow index (MFI) measured according to ASTM standard D 1238-86 (230/2.16 conditions) higher than 20 g/10 min., preferably, higher than 50 g/10 min., most preferably, such that 70 g/10 min..ltoreq.MFI of the propylene polymer.ltoreq.80 g/10 min.; and at least one other material selected from the group consisting of an organic synthetic polymer, a cellulosic product, and a metal.

Abstract: Thermoplastic resins of enhanced solvent resistance especially useful for packaging or automotive parts comprising blends of amorphous polyamides with a thermoplastic polyester resin, substantially free of a polyarylate have excellent physical properties and barrier resistance to oxygen and carbon dioxide. Preferred blends comprise polyesters prepared by reacting a dihydric alcohol with a dicarboxylic acid, and amorphous polyamides prepared from non-symmetric monomers comprising odd-number chain diamines and diacids, and meta aromatic diamines and diacids.

Abstract: A polymer composition is disclosed which includes a polyamideimide polymer and a liquid crystalline polymer, wherein the amount of the liquid crystalline polymer is in an amount which significantly decreases the melt viscosity of the polyamideimide polymer while not significantly decreasing the mechanical properties of the polyamideimide polymer.

Abstract: Orientable single and multilayer thermoplastic flexible films utilizing blends comprising an amorphous nylon copolymer such as nylon 6I/6T and a nylon copolyamide having a melting point of at least about 145.degree. C. having improved processability, shrinkage and optical properties.

Abstract: Polyimide oligomers include (1) linear, monofunctional crosslinking oligomers prepared by condensing a monoanhydride end cap with a diamine that includes alternating ether and "sulfone" (--SO.sub.2 --, --S--, --CO--, --(CF.sub.3).sub.2 C--, or --(CH.sub.3).sub.2 C--) linkages connecting alternating aromatic radicals and with a dianhydride (or dianhydride mixture), particularly the unsaturated, aliphatic dianhydride commonly known as MCTC; (2) linear, mono- or difunctional crosslinking oligomers prepared by condensing an amine end cap with a diamine and a dianhydride; and (3) multidimensional, crosslinking oligomers having an aromatic hub and at least three radiating arms connected to the hub, each arm including a crosslinking end cap at its distal end and at least one imide linkage.Blends, prepregs, and composites can be prepared from the oligomers.

Abstract: Graft copolymers of .epsilon.-caprolactam are made by a process in which .epsilon.-caprolactam is polymerized in the presence of a copolymer of an aliphatic acrylate and an ethylenically unsaturated carboxylic acid, such as n-butylacrylate and acrylic acid. Such grafted polymers which have nylon-6 side chains grafted onto the acrylate polymer backbone are useful as hot melt adhesives. In the process for preparing these polymers, the backbone polymer is formed initially by solution polymerization at a moderate temperature and the .epsilon.-caprolactam is then added and the temperature increased in the presence of an acidic catalyst. .epsilon.-Caprolactam can be used as the solvent in the polymerization of the backbone polymer.

Abstract: Novel graft copolymers, well adopted for compatibilizing at least two normally incompatible thermoplastic polymers, include the copolymerizates of at least one monoamino-substituted polyamide oligomer and an .alpha.-monoolefin polymer or copolymer having grafted thereon a monomer which is reactive with the amine functional group of the monoamino-substituted polyamide oligomer.

Abstract: A reactive, after cooling still viscous-plastic moldable hot-melt adhesive contains a mixture ofat least one thermoplastic material,at least one binder on isocyanate basis, andat least one thixotropic agent,and the isocyanate content, referred to the total of the hot-melt adhesive, is in the range from 0.01 to 10 percent by weight.

Abstract: Disclosed is a polyamide/polybutadiene/acrylonitrile block copolymer useful in a wide variety of applications, such as an adhesive film, which comprises a polycondensate comprising a polybutadiene/acrylonitrile copolymer having a carboxyl group at each terminal thereof and a polyamide having an aminoaryl group at each terminal, and which is represented by general formula (I) ##STR1## wherein R is a divalent organic group, Ar is a divalent aromatic group, x, y, z, m and n each: represent mean degree of polymerization and are integers in the ranges of x=3 to 7, y=1 to 4, z=5 to 15, n=1 to 30, and nm=2 to 20, respectively.

Abstract: Copolymers comprising amide units and ester units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids and diamines with dihydric alcohols and diesters of aromatic dicarboxylic acids. The products are tough resins, useful per se as molding compounds, and to compatibilize and toughen other thermoplastic polymers.

Abstract: The present invention contemplates a method of making a hollow section fiber reinforced composite assembly useful as a structural component wherein a first rigid, fiber reinforced, EB (electron beam) curable-thermoplastic composite member is formed by liquid castable molding (LCM) thermoplastic-forming material about a fiber reinforcement and a second rigid, fiber reinforced, EB curable-thermoplastic composite member is similarly formed. An EB-curable adhesive material is provided at an interface between the assembled composite members. The composite members are then partially fusion bonded (e.g. ultrasonic tack welded) together at regions of the interface devoid of adhesive to form a hollow section for subsequent curing. The hollow section is subjected to irradiation by high energy electrons effective to cure the adhesive material and the partially bonded first and second fiber reinforced, EB curable-thermoplastic members to a thermoset condition useful in structural applications.