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: 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: A thermosetting powder coating composition having improved optical properties, such as orange peel, gloss and Distinctness of Image (DOI), which includes a reactable mixture of a carboxylic acid group-containing polyester or acrylic, a fatty acid hydroxyalkylamide group-containing material and beta-hydroxyalkylamide curing agent.

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: 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: This invention relates to thermoplastic moulding compounds with improved properties, in particular with reduced water absorption and rigidity and improved impact strength, from polyamides A and a thermoplastic resin copolymer B containing at least one (meth)acrylic acid ester of a tertiary alcohol in quantities of up to 35% by weight in addition to the other monomers such as styrene or (meth)acrylic esters. The invention also relates to rigid moulding compounds which are tough at low temperatures and are obtained from polyamides and the thermoplastic resin copolymers defined above and in addition contain a rubber polymer C in quantities of up to 35% by weight.

Abstract: An acrylic additive polymer containing free carboxylic acid groups is added to a core-shell impact-property modifier containing free carboxylic acid groups to produce an improved physical-property modifier for polyamide resins.

Abstract: Unreinforced polyamide molding materials containA) from 60 to 100% by weight of a mixture consisting ofA.sub.1) from 97.5 to 99.85% by weight of one or more polyamides,A.sub.2) from 0.05 to 0.5% by weight of aluminum hydroxide andA.sub.3) from 0.1 to 2% by weight of one or more esters or amides of saturated or unsaturated aliphatic carboxylic acids of 10 to 40 carbon atoms with aliphatic saturated alcohols or amines of 2 to 40 carbon atomsand, based on the total weight of the polyamide molding material,B) from 0 to 40% by weight of a toughened polymer andC) from 0 to 10% by weight of conventional additives in effective amounts.

Abstract: Thermoplastic resin compositions having the following component A-1 or A-2, component B and component C:(A-1): a polymer component having a functional group capable of reacting with an amino group, or(A-2): a composition of component (A-1) and a resin that is non-reactive with an amino group and is different from the resin used in the following component B(B) a thermoplastic resin component that is non-reactive with an amino group under the conditions required to mold the entire resin composition; and(C) a graft copolymer obtained by a graft reaction of a thermoplastic polymer, with a compound (I), or a copolymer having the repeating unit (II) and the repeating unit of an ethylenic unsaturated monomer, ##STR1## wherein R.sup.1 -R.sup.4, the same or different represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or an aralkyl group.

Abstract: The lubricious hydrophilic coatings of the invention are significantly more lubricious when wet than when dry, are adherent to a variety of substrates, and are resistant to removal by wet abrasion. In one embodiment, the coatings include a hydrophilic polyolefin such as polyvinyl-pyrrolidone and a water-insoluble stabilizing polymer such as a cellulose ester. The coatings may also include an adherent polymer and a plasticizing agent. The coating may be applied by preparing a solution of the stabilizing polymer and a solution of the hydrophilic polyolefin, and coating the substrate first in one then the other. Alternatively, both the stabilizing and hydrophilic polymers may be dissolved in a single solvent system and applied to the substrate in a single step. In another embodiment, only a solution of a hydrophilic polyolefin is applied directly to the substrate.

Abstract: Polymeric fibrids reinforce elastomers to yield well-blended products of high modulus and elongation.

Abstract: A resin composition comprising a polyester and a modified polyolefin, wherein said polyester has an amide bond in polymer main chain and said modified polyolefin has a carboxylic acid group or a derivative thereof.

Abstract: A resin composition for powder coatings that comprises a composition (A) and a blocked polyisocyanate compound (B), the composition (A) being based on both a carboxyl group containing polyester resin having a hydroxyl value of 10 to 100 and a softening point of 50.degree. to 150.degree. C. and a glycidyl group containing acrylic resin having a hydroxyl value of 30 to 150 and a softening point of 50.degree. to 150.degree. C., and further containing a copolymer prepared by reaction between said polyester and acrylic resins. This resin composition is capable of providing an ideal paint film that possesses the features of a paint film prepared from polyester resins (high degrees of smoothness, gloss and strength) and those of a paint film prepared from acrylic resins (high levels of hardness, stain resistance and weatherability).

Abstract: The invention relates to polymers containing units of the structure ##STR1## or mixtures of A with more than one of B, B-1 and B-2; wherein R and R.sup.1 are each independently C.sub.1 to C.sub.18 alkyl;R.sup.2 is oxygen, sulfur or --NR.sup.5 --;R.sup.5 is hydrogen or lower alkyl;R.sup.3 is alkylene having from 3 to 6 carbon atoms, optionally mono- or di- substituted with lower alkyl;W is hydrogen, --NH.sub.4, an alkali metal or an alkaline earth metal;Y is alkylene;Z is hydrogen, --NH.sub.4, an alkali metal or an alkaline earth metal or mixtures thereof;X is lower alkyl, a hydroxy phenyl radical or mixtures thereof;t has a value of from 2 to 8 andm, m', m" and n independently have a value of from 30 to 3,500 and n represents at least 5 mole percent of the polymeric product. The invention is also releated to the synthesis of the above polymers and to their use as superior adhesives which have significantly improved bond strength.

Abstract: A polymer mixture reinforced by an in situ, melt-polymerized microphase whereby the rigidity of the base material is increased, a process for manufacturing same, and use thereof for providing reinforced compositions and articles in which the polymer mixture is prepared by polymerizing a component B in a melt of a component A composed of at least one thermoplastic polymer. Component B is composed of at least one compound having the structure ##STR1## The reaction of component B in a melt of component A results in linear, branched or cross-linked, high or low molecular weight polymers constituting a microphase. Preferably, the microphases have the form of microfibers. In the structure of component B, X is NH.sub.2, NHR.sup.3, OH or an N-substituted, Y-activated lactam of the ##STR2## type which is activated with an electrophilic substituent Y, where Y is CO, SO.sub.2, or R.sup.5 P=O; R.sup.1, R.sup.2 and R.sup.

Abstract: A thermoplastic propylene resin composition of the present invention is obtained by blending a polyamide resin (F), an epoxy group containing copolymer (G) with a graft resin composition (J) obtained by graft copolymerizing an unsaturated carboxylic acid or a derivative thereof onto a mixture of polypropylene (C) and a rubber-like material (H) wherein the content of the polyamide resin (F) in the thermoplastic propylene composition is less than 60% by weight.These thermoplastic propylene resin compositions can easily be processed into molded products, films or sheets by injection molding, extrusion molding or the like, giving products which have a good balance in various physical properties and a uniform and smooth appearance. They are suitable for purposes in which especially high heat resistance, impact resistance and low-temperature impact resistance are required.

Abstract: A coating composition which is capable of curing at ambient temperature to form a coating comprises (A) an anhydride-functional polymer containing at least two cyclic carboxylic acid anhydride groups per molecule and (B) an amine-functional polymer and is characterized in that the amine-functional polymer (B) contains at least two secondary amine groups per molecule, the polymer (B) being substantially free from hydroxy and ether oxygen atoms and amine nitrogen atoms in the alpha and beta positions with respect to the amine nitrogen atoms, and the carbon atoms directly bonded to the amine nitrogen atoms not being tertiary carbon atoms.

Abstract: A polyamide resin composition comprising: (a) 100 parts by weight of a polyamide; (b) from about 1 part to about 80 parts by weight of an aromatic polyamide fiber; (c) from about 3 parts to about 80 parts by weight of a polytetrafluoroethylene; and (d) from about 1 part to about 20 parts by weight of high-density polyethylene is disclosed. The polyamide resin composition can be molded into sliding members, like bearings, bushings and slide rails, that demonstrate excellent mechanical and physical properties, like low frictional force, low self-abrasion, and low abrasion to metals.

Abstract: A composition that includes a finely divided, fully imidized, polyimide dispersed in a non-volatile, fluidizing resin that is a liquid or low viscosity semi-solid at room temperature. The fluidizing resin is substantially insoluble in the polyimide at room temperature, but soluble in the polyimide at the elevated temperatures during thermal processing. The composition has the flow characteristics of a highly filled liquid. The composition if useful, e.g., as an adhesive.

Abstract: A polyamide resin composition having a multi-phase structure and a process for producing the same are disclosed, the composition comprising:(A) from 60 to 97 parts by weight of a polyamide resin containing at least 2 parts by weight of (A-1) a polyamide resin having a concentration ratio of terminal carboxyl group to terminal amino group of 1.5 or more,(B) from 3 to 40 parts by weight of an ethylene copolymer comprising:(a) from 40 to 90% by weight of an ethylene unit,(b) from 5 to 60% by weight of an .alpha.,.beta.-unsaturated carboxylic acid alkyl ester unit, and(c) from 0.3 to 10% by weight of a maleic anhydride unit, and(C) from 0.

Abstract: Neat and filled polyphthalamide resins are improved in processability when blended with polypropylene and a carboxylated polyolefin resin. Filled polyphthalamides, particularly glass-filled polyphthalamide formulations, are significantly benefited, and glass fiber-filled molding resin formulations of this invention comprising high levels of fiber are more readily moldable than polyphthalamide formulations without the polyolefin components comprising the same and even lower levels of glass-fiber.

Abstract: A process for producing a graft copolymer comprising melt-blending:(A) 1 to 90 parts by weight of an ethylene copolymer, based on the weight of the graft copolymer, comprising (a) 40 to 99.9% by weight of ethylene units, (b) 0 to 60% by weight of .alpha.,.beta.-unsaturated carboxylic acid alkyl ester units, and (c) 0.1 to 10% by weight of maleic anhydride units;(B) 0.1 to 10 moles of a lactam metal salt compound per mole of the maleic anhydride units (c) of the ethylene copolymer (A); and(C) 10 to 99 parts by weight of a lactam compound, based on the weight of the graft copolymer,which results in a graft copolymer having high impact strength, high flexibility, satisfactory dyeability, and well-balanced physical properties over a wide temperature range.

Abstract: Thermoplastic molding compositions including a semicrystalline polyamide a) and an amorphous copolyamide b), the latter containing dimerized fatty acid as one monomer building block. Optionally, a compatibility agent and other additives are also included.The molding compounds having high stiffness up to at least 100.degree. C. are produced by melt-mixing components a) and b), and optionally a compatibilizer, and are used for making molded parts which are outstanding in their thermal properties, high solvent resistance, and resistance to stress corrosion.

Abstract: It is frequently desirable to increase the modulus of rubbers which are utilized in a wide variety of applications. This invention discloses a technique for increasing the modulus of rubbers. By utilizing this technique, high modulus rubber compositions can be attained without sacrificing other properties, such as elongation and hysteresis. This invention more specifically relates to a process for preparing a high modulus rubber composition which comprises: (1) polymerizing at least one N-carboxyl-.alpha.-amino acid anhydride in a polymer cement of a rubbery elastomer under conditions which result in the formation of a rubber cement having the poly(.alpha.-amino acid) dispersed therein; and (2) recovering the high modulus rubber composition from the rubber cement. The high modulus rubber compositions made by this technique are comprised of at least one rubbery elastomer and at least one poly(.alpha.-amino acid).

Abstract: A polyamide composition comprising an aromatic ring-containing polyamide resin and a specific amount of an aliphatic polyester. The composition has improved molding properties, such as mold release characteristics, and exhibits excellent physical properties, such as stiffness, which will not be lowered upon contact with moisture. The polyamide composition may contain additional components which have been used to improve properties other than molding properties, such as Izod impact strength and hinge effect properties, so that the effects of the components are also exerted in the present composition without sacrificing the main effect aimed at by the present invention, i.e., excellent molding properties. Therefore, the polyamide composition of the present invention is useful as a molding material in various fields, e.g., automobile, electrical and electronic industries.

Abstract: A thermoplastic resin composition comprising100 parts by weight of a resin mixture comprising(A) 5-95% by weight of polyolefin and(B) 95-5% by weight of polyester and/or polyamide, and(C) 1-20 parts by weight of chlorinated polyethylene incorporated into the resin mixture.

Abstract: The invention provides a core-shell polymer which comprises (a) a core phase having carboxyl groups on surface part of the core and (b) a shell phase which is a glassy polymer containing neither functional groups reactive to the the carboxyl group nor functional groups reactive to the amino group, wherein the toluene-soluble fraction is not higher than 10% by weight based on the whole core-shell polymer; polyamide resin compositions comprising said core-shell polymer; and molded articles produced by molding said compositions.Impact strength of the resin composition or its molded articles was improved by using the core-shell polymer.

Abstract: Tough, high melt flow, low molecular weight polyamide compositions containing toughening polymers are obtained by blending conventional polyamides with the toughening polymer and then mixing the blend with very low molecular weight polyamides which are capable of reacting with the conventional polyamide by transamidation.

Abstract: Disclosed is a plastics composition comprising a thermoplastic blend comprising: (1) 5-95 wt % of a polyamide (PA) and 95-5 wt % of a polyester (PE) incorporating 1-50 wt % of an aliphatic dimer fatty acid, (2) 0.01-30 parts by weight of a compound having at least one ethylenically unsaturated group or propylene group and further having a carboxylic, acid anhydride, acid amide, imido, carboxylic ester, amino or hydroxyl group per 100 parts by weight based on the combined weight of PA and PE, (3) 0-90 parts by weight of a polyester not modified with dimer fatty acid per 100 parts by weight based on the combined weight of PA and PE. Preferably the polyester (PE) is a polyethylene terephthalate or polybutylene terephthalate modified with di-oleic acid. The blends have a greatly improved elongation at break and are readily spinnable.

Abstract: Compatibilizing agents suitable for blending otherwise immiscible polymers comprise a block or graft copolymer in which at least one of the block segments is formed by a living anionic polymerization and thereafter chemically converted to provide a polymer having at least one functional end group. The functional groups of the polymer blocks thus formed are reacted with a functionalized monomer, or an oligomer to provide a second block polymer segment. Compatibilizing agents containing more than two blocks may be formed in similar fashion. The compatibilizing agents are used to provide uniform blends of polar and non-polar polymers having superior uniformity and other physical properties.

Abstract: The present invention relates to improved polyphenylene ether-polyamide composition wherein the polyamide component comprises a mixture of amorphous and crystalline polyamide.

Abstract: A polymeric blend and a fuel container made of this blend. The blend has improved resistance to fuel and includes:(a) a copolymer obtained from copolymerization of .epsilon.-caprolactam, and a substance selected from the group consisting of:an aminocarboxylic acid having a carbon atom number not lower than 9,a lactam corresponding to said aminocarboxylic acid anda mixture of hexamethylenediamine with a dicarboxylic acid having a carbon atom number not lower than 9, a weight ratio of said .epsilon.-caprolactam with respect to said hexamethylenediamine plus said dicarboxylic acid being of from 4 to 9; and(b) a polyolefin polymer with functional groups selected from the group consisting of carboxyl groups, esters, anhydrides, and carboxylates.

Abstract: The invention concerns a golf ball constituted of a three part structure, constituted of an elastomer core, an intermediate layer, and a thermoplastic envelope. The intermediate layer is made of a thermoplastic material containing at least 10%, and preferably at least 35% of ether block copolymer. The material may also be advantageously constituted of ether block copolymer to which is added 0 to 90% of ionomer(s) with respect to the total weight of the compound.

Abstract: A macromolecular mitomycin derivative excellent in antitumor ability is produced by causing a specific divinyl ether-maleic anhydride copolymer to react with a specific aminocarboxylic acid and causing mitomycin C to react on the resultant reaction product. The derivative is optionally converted into a pharmacologically acceptable salt.

Abstract: The invention relates to improved polymer blends of polyamides and vinyl polymers containing sulfonamide structural units. Polyamide molding compounds having reduced water absorption and improved dimensional stability coupled with good mechanical properties, such as impact strength and rigidity, minimal discoloration, high heat resistance and migration resistance, are thus obtained.

Abstract: This invention relates to a process for the preparation of particulate, high molecular weight polyamides, to the particulate, high molecular weight polyamides prepared by this process, to the use of these polyamides for the production of moulded bodies, especially by extrusion or blow moulding, and to the articles produced from the polyamides according to the invention. The process is characterized in that polyamides are mixed with concentrates of certain compounds containing phosphorus and worked up into granulates and these granulates are converted into high molecular weight products by solid phase after-condensation.

Abstract: Aromatic polyetherimides can be blended with aromatic alkyl methacrylate polymers to give transparent, single phase and completely miscible materials at all compositions. Such blends, which exhibit only one glass transition, are endowed with improved workability, ease of processing and toughness compared to the polyetherimide alone as well as improved heat distortion, modulus and tensile strength as compared to the methacrylate alone. Aromatic polycarbonates, which are ordinarily immiscible with aromatic polyetherimides, can be compatibilized into single phase blends after the addition of a polyaromatic alkyl methacrylate.

Abstract: A polymer which can undergo thermally-induced transformation to provide a reinforcing component and a matrix component. This polymer has repeating units of the formula: ##STR1## wherein Z is selected from the group consisting of dialkyl amino thermoplastic moieties and dialkyl amino moieties which can undergo insitu reaction to form a thermoset. Dialkyl amino moieties which can undergo insitu reaction to form thermosets include the following: ##STR2## wherein Q is ##STR3## R is --CH.sub.3 or Q and a has a value of 1 to 3. Dialkyl amino thermoplastic moieties include the following: ##STR4##The invention described herein may be manufactured and used by or for the Government of the United States for all governmental purposes without the payment of any royalty.

Abstract: The invention relates to polymers containing units of the structure ##STR1## or mixtures of A with more than one of B, B-1 and B-2; wherein R and R.sup.1 are each independently C.sub.1 to C.sub.18 alkyl;R.sup.2 is oxygen, sulfur or --NR.sup.5 --;R.sup.5 is hydrogen or lower alkyl;R.sup.3 is alkylene having from 3 to 6 carbon atoms, optionally mono- or di- substituted with lower alkyl;W is hydrogen --NH.sub.4, an alkali metal or an alkaline earth metal;Y is alkylene;Z is hydrogen, --NH.sub.4, an alkali metal or an alkaline earth metal or mixtures thereof;X is lower alkyl, a hydroxy phenyl radical or mixtures thereof;t has a value of from 2 to 8 andm, m', m" and n independently have a value of from 30 to 3,500 and n represents at least 5 mole percent of the polymeric product. The invention is also related to the synthesis of the above polymers and to their use as superior adhesives which have significantly improved bond strength.

Abstract: A process for melt-blending a polyamide with a crystalline polyolefin incompatible therewith in the presence of a rubbery compatibilizing polymer capable of chemically or physically associating with both the polyamide and the polyolefin, at a process temperature higher than the highest melting temperature of any crystalline polymer present and higher than the highest glass transition temperature of any amorphous polymer present but such that significant degradation of any polymer present does not occur, all blend components being present within stated ranges, and the melt viscosity ratio of the polyamide to that of the polyolefin at the process temperature and a shear rate of about 100-200 sec.sup.-1 being about 0.1-1.2, especially 0.4-0.8. High stiffness, supertough polymer blends, where notched Izod impact strength exceeds 535 J/m, are obtained.

Abstract: For the preparation of thermoplastic materials based on (a) homopolymers or copolymers of vinyl chloride and (b) polyacrylates having a glass transition temperature of less than -20.degree. C., firstly the acrylate is polymerized in aqueous emulsion in the presence of crosslinking compounds copolymerizable with the acrylates and having at least two nonconjugated double bonds. Secondly, the vinyl chloride or vinyl chloride with up to 20% by weight of copolymerizable monomers is heated with an initiator, a suspension agent system and optionally additives in an aqueous suspension to a temperature of about .gtoreq.30.degree. C. The polyacrylate is subsequently added and polymerization carried out at temperatures of about >30.degree. C. to the desired conversion. The resulting polymers exhibit improved particle size distribution, good reproducibility of the bulk density and in particular caked deposits on the wall are dramatically reduced during polymerization.

Abstract: Higher yields of graft copolymer occur when a catalytic amount of base is present during the grafting reaction. The resulting blends of ungrafted polymer with higher graft-copolymer content exhibit improved toughness and clarity.

Abstract: Powder coating compositions are provided including a thermosetting or thermoplastic particulate resinous material and as a flow modifier, a copolymer of maleic anhydride or a substituted maleic anhydride and a copolymerizable material selected from among cycloalkenes and aliphatic olefins, with said copolymer optionally chemically modified with a primary amine or alcohol. Such flow modifiers can provide the cured coating with recoat adhesion and crater control.

Abstract: A novel graft copolymer capable of imparting to a polyolefin when blended therewith high tensile modulus and high sag resistance without increasing melt viscosity, and a method of making the same. The graft copolymer is a polyolefin having a relatively high weight-average molecular weight methacrylate polymer grafted thereto. The graft copolymer is formed by dissolving or swelling a non-polar polyolefin in an inert hydrocarbon solvent, heating to dissolve the polyolefin, and while stirring the mixture, adding a methacrylate monomer, together with an initiator to produce a constant, low concentration of radicals, to form a graft copolymer with a high molecular weight polymer chain covalently bonded or grafted to the polyolefin backbone. The graft copolymer can be separated from the solvent, isolated by volatilizing the solvent, for example in a devolatilizing extruder, and extruded into a desired shape such as a sheet, tube or the like. This graft copolymer can be blended with a poolyolefin matrix.

Abstract: The invention relates to compatible polymer mixtures of a polyamide and a special vinyl monomer containing copolymerized structural units of the bisphenol derivative type. The new mixtures are suitable for the production of thermoplastic molding compounds.

Abstract: This invention relates to mixtures of short fibers of varying lengths, diameters and aspect ratios composed of an anisotropic polymer, to compositions containing said fibers and one or more thermoplastic or thermoset resins, and to a process for forming said mixtures.

Abstract: A novel polyanhydride having at least two cyclic carboxylic acid anhydride groups per molecule also contains pendent amine groups, the proportion of amine groups to cyclic carboxylic acid anhydride groups being no more than 4:1 and the content of free carboxylic acid groups, if any are present, being less than 200 mole percent based on the amine groups, A coating composition comprises (A) a hydroxy component having at least two free hydroxy groups per molecule and (B) an anhydride component having at least two cyclic carboxylic acid anhydride groups per molecule, at least one of (A) and (B) being a film-forming polymer. The anhydride component (B) contains a catalytically effective amount of pendent amine groups for accelerating the curing reaction between the hydroxy groups of (A) and the anhydride groups of (B) and is preferably one of the novel polyanhydrides.

Abstract: The present invention provides a curable resin coating composition consisting essentially of:(i) a resin (A) containing .alpha.,.beta.-unsaturated carbonyl group and primary and/or secondary hydroxyl group, or(ii) a mixture of a resin (B) containing .alpha.,.beta.-unsaturated carbonyl group and a resin (C) containing primary and/or secondary hydroxyl group, and(iii) at least one curing catalyst selected from the group consisting of alkali metal alkoxides, metal hydroxides, organic acid salts of metals, quaternary ammonium hydroxides, quaternary phosphonium hydroxides, tertiary sulfonium hydroxides and organic acid salts of these onium hydroxides.

Abstract: A polyamide composition which comprises a thermoplastic polyamide red phosphorus and an olefin copolymer. The olefin copolymer is ungrafted and is a copolymer with units from ethylene and an unsaturated ester of a saturated C.sub.1 to C.sub.4 carboxylic acid.The composition can also include a magnesium compound such as magnesium hydroxide or carbonate, and also reinforcing fibers or fillers such as glass fibers.