Abstract: Melt-processible blends of aluminum ionomers of ethylene/unsaturated carboxylic acid copolymers and thermoplastic resins or elastomers are obtained by mixing the ethylene/acid copolymer and the thermoplastic resin or elastomer and simultaneously or subsequently neutralizing from about 1 to about 100% of the carboxylic acid groups of the ethylene copolymer with aluminum ions.

Abstract: This invention is an improvement over the copending Olivier application Ser. No. 537,789, now U.S. Pat. No. 4,594,386, filed Sept. 30, 1983 and entitled "Polyamide Grafted EPM Blend". This invention relates to the further improvement in impact strength and toughness of polycaprolactams and other polyamide based resinous compositions and to a new and improved method for the manufacture of same.

Abstract: Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" required for most applications.

Abstract: Described herein are curable molding compositions comprising a mixture of:(a) a poly(acrylate) characterized by the following empirical formula: ##STR1## wherein R is the hydroxy-free residue of an organic polyhydric alcohol which contained alcoholic hydroxyl groups bonded to different carbon atoms, R.sub.1 and R.sub.2 are independently hydrogen or methyl, and n is 1 to 3,(b) acrylic or methacrylic acid or a functionalized derivative thereof having a molecular weight of less than 300 which is different from (a), and(c) an ethylenically unsaturated monomer which is soluble in and copolymerizable with (a) and (b) and which is different from (a) and (b). The compositions can also contain one or more fibers with a melting point or a glass transition temperature above about 130.degree. C.

Abstract: An improved method for making alloys of styrenic resins and polyamides. The styrenic resin is first melt-processed with an ethylenically-unsaturated carboxylic compound, optionally in the presence of a free-radical generator, then combined with the polyamide under melt-processing conditions. The compositions remain thermally-processable and generally exhibit good impact properties with little or no delamination.

Abstract: Wires of poly-.epsilon.-caprolactam with a diameter of from 2 to 8 mm and a strength of from 35 to 45 cN/tex containing from 0.1 to 10% by weight, based on poly-.epsilon.-caprolactam, of titanium dioxide pigment are useful as anchoring wires in the cultivation of wine and fruit and for fences around pasture land.

Abstract: A thermoplastic polybend of nylon 66 and polymethylmethacrylate having superior friction and wear properties. Alternatively, the polybend composition may contain a third component of polytetrafluoroethylene to further improve its friction and wear properties.

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: Pressure sensitive adhesives comprise blends of polyamides with polyacrylates. The resultant blends are particularly suited for use in pressure sensitive adhesive tapes. Films, articles, and coated articles containing these pressure sensitive adhesives are also disclosed.

Abstract: A soil release composition comprising:(A) a polymer comprising 10 to 100% by weight of constituting units of the formula: ##STR1## wherein R.sub.f is a C.sub.3 --C.sub.21 fluoroalkyl group; R.sup.1 is a hydrogen atom or a C.sub.2 --C.sub.4 acyl group; R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are, the same or different, each a hydrogen atom, a methyl group or an ethyl group; A is a group of the formula: --CH.sub.2 CH(OR.sup.1)CH.sub.2 --OCO-- which R.sup.1 is the same as defined in the above, --CO--, --(CH.sub.2).sub.k N(R.sup.2)CO-- in which R.sup.2 is the same as defined in the above and k is an integer of 1 to 10, or --(CH.sub.2).sub.

Abstract: Elastomeric thermoplastic molding materials contain(A) from 5 to 50 parts by volume of a partially or completely crystalline thermoplastic polymer having a melting point of above 160.degree. C., as a coherent phase, and(B) from 95 to 50 parts by volume of one or more crosslinked elastomeric polymers which are prepared by emulsion polymerization, are dispersed in the component A and have a glass transition temperature Tg of below -10.degree. C., the sum of A and B being 100 parts by volume, with the proviso that the mixture of A and B has a Vicat softening temperature, measured according to DIN 53,460, which is 5.degree.-40.degree. C. lower than that of the component A, with or without(C) effective amounts of conventional assistants.

Abstract: A polyamide-rubber blend composition is disclosed. The composition is prepared by mixing the following components (a) and (b) under heating in the presence of a crosslinking agent.(a) 70 to 40 vol % of a rubber composition made of 5 to 40 vol % of an acrylonitrile-butadiene copolymer rubber and 95 to 50 vol % of an epichlorohydrin rubber; and(b) 30 to 60 vol % of a polyamide resin, the gel fraction of the rubber composition (a) in the blend composition is at least 70 wt %.The acrylonitrile-butadiene copolymer rubber of the composition preferably contains not less than 1.5 wt % of a carboxyl group in the polymer.

Abstract: Thermoplastic compositions particularly suitable for fabrication of low permeability hoses are produced by mixing a crystalline polyamide and a carboxylated synthetic rubber as polymeric materials and as a first additive a member selected from halides of lithium, magnesium, calcium and zinc and as a second additive a member selected from oxides and hydroxides of magnesium, calcium, barium and zinc and the peroxides of calcium and zinc.

Abstract: Disclosed is a composition useful for preparing paperboard containers comprising wood pulp, polyolefin pulp containing carboxylic functionality and a water-soluble cationic wet-strength resin. The paperboard is used for preparing containers for liquids such as juices and dairy products. The filled containers have improved durability when exposed to high humidity.

Abstract: A polyamide article for use in contact with antifreeze compositions at elevated temperatures wherein the article is formed of a reinforced composition comprising a polyamide selected from nylon 66, nylon 6 and nylon 610 or copolymers thereof, from 10 to 60% by weight of reinforcing filler and from 0.1 to 10%, preferably 0.25 to 5% by weight of a copolymer formed from ethylenically unsaturated monomers and having functional groups extending from the polymer chain capable of reaction with the end groups of the polyamide polymer wherein the copolymer contains up to 50 mole % of residues obtained from ethylenically unsaturated monomers containing functional groups. The functional groups are preferably carboxylic acid or carboxylic acid anhydride groups. The articles include radiator end tanks and water pump bodies and impellers.

Abstract: In one embodiment this invention provides a nonlinear optical substrate which comprises a transparent film of an external field-induced noncentrosymmetric macroscopic orientation of poly[[benzo(1,2-d:5,4-d')bisthiazole-2,6-diyl]-1,4-phenylene] molecules: ##STR1##

Abstract: A dispersion aid for polymers comprising a copolymer salt of a low molecular weight copolymer acid of an alpha-olefin and an alpha,beta-ethylenically unsaturated carboxylic acid, a composition containing the lubricant, and a method for processing polymers containing the dispersion aid.

Abstract: The compatibility and thermal stability of blends of polyamides/carboxyl-containing ethylene polymers is improved by adding thereto an organic carboxylic acid compound, especially di-basic acids such as sebacic acid or tartaric acid. The blends may also contain free-radical scavengers and/or antioxidants. These blends are useful as heat-plasticized adhesives or bonding agents.

Abstract: Impact-resistant nylon molding materials are prepared by activated alkaline lactam polymerization by a process in which the polymerization is carried out in the presence of a graft polymer in whichA. from 5 to 95 parts by weight of a rubber-like polymer having a glass transition temperature below 0.degree. C. form the grafting base forB. from 95 to 5 parts by weight of a polyadduct, polycondensate or acrylyl polymer having a glass transition temperature above 0.degree. C., with or withoutC. from 0 to 90 parts by weight of a vinyl monomer.

Abstract: Impact strength and toughness of polyamide resins are improved by blending resin with up to 50 percent by weight maleic anhydride grafted EPM rubber of low molecular weight and exposing the mixture to elevated temperature during blending.

Abstract: Low-shrinkage nylon moldings are produced by activated alkaline lactam polymerization, preferably using the reactive injection molding technique, by a process wherein the polymerization is carried out in the presence of from 5 to 80% by weight of a polymer P which1. is completely soluble in the lactam,2. separates out in the course of polymerization at a conversion of from 1 to 50%,3. is composed of one or more blocks which are compatible with polylactam and one or more blocks which are incompatible therewith, and preferably4. possesses functional groups which are incorporated into the growing polylactam chain.

Abstract: A process is provided for the production of mixtures of polymer and fibrous materials by co-coagulation of the polymer and fibrous material. Mixtures of the polymer and fibrous material and vulcanizates of these mixtures are also described.

Abstract: This invention is concerned with polyetherimide blends. More particularly the polyetherimide blend comprises a polyetherimide and a block copolymer of a vinyl aromatic hydrocarbon and a diene hydrocarbon, and a polyester to form a ternary blend.

Abstract: The char residue formation of molded compositions, upon combustion, is improved by incorporating into the moldable composition a char-forming polymer containing recurring units of at least one monomer capable of undergoing tautomerization, at least one monomer capable of undergoing a nucleophilic substitution reaction by said monomer capable of undergoing tautomerization and, optionally, at least one additional copolymerizable monomer.

Abstract: The present invention describes a polyamide-rubber blended composition having improved resistance to ozone, stress whitening and gasoline prepared by mixing together with heating the following components:(a) from 70 to 20 volume percent of a rubber composition consisting of:(i) 30 to 70 volume percent of an acrylonitrile-butadine copolymer rubber containing at least 0.8 weight percent of an epoxy group in the polymer, and(ii) 30 to 80 volume percent of an epichlorohydrin rubber;(b) 30 to 80 volume percent of a polyamide resin; and(c) at least 0.15 parts by weight of a carboxylic acid having a functional group calculated in terms of the weight of the carboxyl group per 100 parts by weight of the rubber composition of component (a).

Abstract: The present invention describes a polyamide-rubber blended composition having improved resistance to ozone, stress whitening and gasoline prepared by mixing together with heating the following components:(a) from 70 to 20 volume percent of a rubber composition consisting of:(i) 30 to 70 volume percent of an acrylonitrile-butadiene copolymer containing at least 0.7 weight percent of a carboxyl group in the polymer, and(ii) 70 to 30 volume percent of an epichlorohydrin rubber;(b) 30 to 80 volume percent of a polyamide resin; and(c) at least 0.1 parts by weight of a polyepoxy compound in terms of the weight of the epoxy group per 100 parts by weight of the rubber composition of component (a),components (a) and (b) blended together after which component (c) is added and the resulting mixture kneaded with heat to form the polyamide-rubber blended composition.

Abstract: The present invention is a flame retardant composition comprising from 5 to 20 weight percent of a homopolymer of a monomer having the formula: ##STR1## wherein n=0 or 1, X is bromine or chlorine and R is hydrogen or methyl. The polymer has a molecular weight between 1.times.10.sup.3 and 10.times.10.sup.6, and preferably 5.times.10.sup.3 to 5.times.10.sup.6. The molecular weight is determined by gel permeation chromotography in tetrahydrofuran. The composition contains from 80 to 95 weight percent of a polyamide having an excess of polymer chain ends terminated with amine groups. There can be from 0 to 10, preferably 1 to 10, and more preferably 2 to 6 weight percent of antimony oxide. Optionally, the composition can contain an impact modifier and/or a filler.

Abstract: Blends are provided of (a) certain aromatic-aliphatic polyamides and (b) an impact resistance-enhancing amount of a particulate rubbery impact modifier.

Abstract: This invention is a nylon fiber useful for improved comfort for wearers of apparel fabric made therefrom comprising (a) from about 5 to 15 percent by weight of poly (N,N-dimethylacrylamide) having a molecular weight which in a 25% aqueous solution gives a viscosity of from about 20 to 1 000 centipoise (0.02 to 1.0 Pa.s) at 25.degree. C. and (b) correspondingly from about 85 to 95% by weight nylon.

Abstract: Novel nylon molding materials having high impact strength contain, as an additive, a copolymer of ethylene, a primary or secondary C.sub.2 -C.sub.8 -alkyl acrylate or methacrylate and a monomer possessing a (latent) acid functional group, in particular an ethylene/n-butyl acrylate/acrylic acid copolymer.

Abstract: An adhesive interlining is described comprising randomly oriented constituent fibers and an adhesive for adhering the interlining to an article of clothing, wherein at least about 40% by weight of the fibers are heat softening fibers having a softening temperature less than the melting temperature of the adhesive, the heat softening fibers having a contraction coefficient of 3.0% or less at their softening temperature.

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: A polymeric material which is superior in mechanical strength, dimensional stability, moldability and resistances to chemicals, heat and abrasion comprises a copolymer composed of polymer chain moieties of a copolymer containing an imide compound of an .alpha.,.beta.-unsaturated dicarboxylic acid and polymer chain moieties of a polyamide, both chain moieties being bonded to each other. The material may be blended with thermoplastic resins. Furthermore, the material may be reinforced with glass fiber, etc.

Abstract: High impact resistant polyamide resins containing an amorphous polyamide and dispersed particles of a toughener containing grafted succinic anhydride groups. The toughener has a particle size of less than about 360 nm, as determined by a small angle X-ray scattering technique. The toughener is present in the resin in the amount of at least 15% by weight.

Abstract: Disclosed are injection moldable, rapidly crystallizable compositions comprising (A) a linear polyamide selected from the series poly(4,4'-methylenediphenylene azelamide to dodecanediamide); and (B) an amount sufficient to promote the crystallization of the linear polyamide, of a material selected from the group of (i) talc, (ii) sodium benzenesulfonate, (iii) a polyethylene ionomer, (iv) a methacrylated butadiene-styrene, and (v) a multi-phase composite interpolymer.The compositions crystallize rapidly from the molten state which allows for economically attractive molding procedures including fiber production and the production of aromatic-aliphatic polyamides having a combination of excellent properties.

Abstract: The preparation of monolayer blown nylon films on equipment conventionally used in the manufacture of blown polyethylene film is facilitated by the intimate admixture of a minor proportion by weight of a random ethylene/ethylenically unsaturated carboxylic acid copolymer into the nylon resin composition from which said blown nylon film is to be manufactured.

Abstract: A cathodic electrocoating binder comprises a mixture of(A) from 50 to 95 percent by weight of one or more polyadducts, polymers and/or polycondensates which possess basic nitrogen groups and(B) from 50 to 5 percent by weight of one or more amide-amines obtained by reacting monocarboxylic and/or dicarboxylic acids, or their esters, with diamines which possess one primary and one secondary amino group per molecule, the secondary amino group carrying a .beta.

Abstract: The instant invention relates to thermoplastically processable polyamides which are rendered flame retardant by means of a new flame retarding agent; the conversion product of cyanuric acid and triazine compounds having free --NH.sub.2 in a molar ratio of at least 2 triazine nuclei per mole of cyanuric acid. The properties of polyamide thermoplasts are changed only slightly through the incorporation of the new flame retarding agent.

Abstract: Vulcanizable rubbery compositions, and a process for their production, comprise a polyamide, a synthetic rubbery polymer comprising (meth)acrylonitrile, .alpha., .beta.-unsaturated carboxylic acid and butadiene and as non-polymeric additives a halide of lithium, magnesium, calcium or zinc and as oxide a hydroxide of magnesium, calcium, barium or zinc or a peroxide of calcium or zinc and sulphur vulcanization active agents.

Abstract: Polyamide carpet fibers coated with a certain class of fluorine-containing addition polymer are described. The coating is chemically bonded to the fiber surface through amide linkages (--NHCO--) of the polyamide. The coating imparts antisoiling properties of a permanent nature to the fibers. Where applied to carpet yarn, the coating has good retention through carpet dyeing operations and does not significantly interfere with the ability of the carpet to take up dye, even in the case of foam dyeing which is particularly sensitive to fluorocarbon coatings.

Abstract: A rubber-toughened addition-type polyimide composition having excellent high temperature bonding characteristics in the fully cured state and improved peel strength and adhesive fracture resistance physical property characteristics is disclosed. The process for making the improved adhesive involves preparing the rubber-containing amic acid prepolymer by chemically reacting an amine-terminated elastomer and an aromatic diamine with an aromatic dianhydride with which a reactive chain stopper anhydride has been mixed, and utilizing solvent or mixture of solvents for the reaction.

Abstract: A composition comprising a polyamide, a reinforcing amount of glass fiber, and 1 to 25, preferably 5 to 25, and more preferably 10 to 20 percent by weight based on the weight of the polyamide of a core/shell polymer. The core/shell polymer comprises 40 to 90 and preferably 50 to 90 parts by weight of an elastomer core and 10 to 60 and preferably 10 to 50 parts by weight of a rigid thermoplastic polymer shell. The shell comprises an interpolymer of 20 to 100 parts by weight of an methyacrylic ester, 0 to 80 parts by weight styrene, and from 0 to 50 parts by weight of acylonitrile. The shell can also contain alkyl acrylates, allyl methacrylates, diallyl methacrylates, and the like. The methacrylic ester is preferably a lower alkyl methacrylate/such as methyl methacrylate. The core is an elastomer and can be a diene elastomer, an ethylene-propylene-diene rubber, an acrylic elastomer, or a polyurethane elastomer.

Abstract: A process for producing high impact block copolyamide is described, comprising anion polymerizing .omega.-lactam in the presence of a prepolymer polymerization accelerator. The prepolymer is prepared by reacting a butadiene homopolymer and/or butadiene-acrylonitrile copolymer containing hydroxyl groups at the terminals thereof with polymethylene polyphenylene isocyanate or tolylene diisocyanate at an equivalent ratio of isocyanate group to hydroxyl group (NCO/OH) of 1:1 or more. With the thus-produced high impact block copolyamide, impact strength is greatly improved, and bleeding of polybutadiene is not observed.

Abstract: A polyamide molding material having good impact strength at low temperature comprising a blend of 66 nylon; 6 nylon; and a toughening polymer.

Abstract: Polyamide toughening crosslinked acrylic rubbers having an outer layer of an alkyl acrylate and a polyamide graft-linking monomer, this outer layer having a glass transition temperature of less than about 20.degree. C.

Abstract: This invention is a nylon fiber useful for improved comfort for wearers of apparel fabric made therefrom comprising (a) from about 5 to 15 percent by weight of poly (N,N-dimethylacrylamide) having a molecular weight which in a 25% aqueous solution gives a viscosity of from about 20 to 1 000 centipoise (0.02 to 1.0 Pa.s) at 25.degree. C. and (b) correspondingly from about 85 to 95% by weight nylon.

Abstract: Polyamides such as nylon-6 type polyamides are prepared by the reaction or copolymerization of a major amount by weight of a lactam and a minor amount by weight of a graft copolymer of maleic anhydride on a low molecular weight liquid conjugated diene polymer or copolymer or of a copolymer of a conjugated diene and a monovinyl aryl monomer or a nitrile. For example, a graft of maleic anhydride on liquid butadiene/acrylonitrile copolymer is copolymerized with epsilon-caprolactam using an anionic lactam polymerization catalyst (a lactamate salt) like the reaction product of ethyl magnesium bromide and epsilon-caprolactam. The present invention may be useful in a RIM (Reaction Injection Molding) process. The resulting polyamides have improved impact strength and water resistance. They can be used to make automobile and truck bodies and parts.

Abstract: Polyamides, flame retarded with a halogenated derivative and blended with a polymer blend resin being at least partially incompatible and having a lower melt viscosity than the polyamide, to improve the arc tracking resistance of the polyamide, are disclosed. The polyamides are particularly useful in the manufacture of flame retarded electrical components.

Abstract: Disclosed is a polyamide film of low crystallinity suitable for use in the manufacture of sheet molding compound (SMC). The sheet is produced from a blend comprising a polyamide selected from the group consisting of polyepsiloncaprolactam, polyhexamethylene adipamide or mixtures thereof, and about 10 to 30 wt. %, based on the total weight of said blend, of a polyolefin compound, or copolymer thereof, such as ethylene-vinyl acetate copolymer. The film has a tear strength of at least about 400 grams in the longitudinal direction as measured by ASTM D-1004-66.

Abstract: Vulcanizable polymer compositions, comprising a polymer blend and a curative system, and a process for preparing the compositions are provided. The polymer blend comprises a flux blend of a PVC, a carboxylated nitrile rubber and a nylon having a melting point of less than about 210.degree. C., and stabilizers. Vulcanizates of the polymer compositions have improved properties and may be used, for example, in spinning cots.