Abstract: The synthesis and characterization of a series of novel (AB).sub.n multiblock copolymers, typically thermoplastic elastomers, containing polyisobutylene as the soft phase and polyamides as the hard phase are described. First, carboxyl ditelechelic polyisobutylene prepolymers and isocyanate ditelechelic polyisobutylene prepolymers were synthesized, both of which were subsequently reacted under solution polycondensation conditions with dicarboxylic acids and diisocyanates. The melting points of the polyamide hard phases were in the 223.degree.-284.degree. C. range. The decomposition temperatures (296.degree.-337.degree. C.) in air and nitrogen of these thermoplastic elastomers were quite similar; in contrast, these properties of polytetrahydrofuran-based thermoplastic elastomers are noticeably lower in air. Melt processing of these novel polyisobutylene-based thermoplastic elastomers is possible.

Abstract: A polyamide-containing polymer mixture having a melt viscosity of 1,000 to 1,400 Pa.multidot.s (at 270.degree. C. and under a load of 122.6 N) and includes the following components:(A) 50 to 75 parts by weight of polyamide 6, polyamide 6,6, polyamide 12 or mixtures thereof;(B) 15 to 30 parts by weight of a polyolefin having a density of 0.921 to 0.96 g/cm.sup.3 onto which an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative has been grafted, the degree of grafting being between 0.01 and 1 weight percent, with respect to the total weigh of grafted and ungrafted polyolefin;(C) 10 to 20 parts by weight of a grafted polyolefin elastomer including at least ethylene and propylene units;(D) Additives selected from the group including stabilizers, anti-friction agents and fillers,with the sum of the parts by weight of components (A) to (D) being 100, and the mixture being produced by mixing components (A), (B) and (D) or (A), (B), (C) and (D) and extruding them at 150 to 300 rpm.

Abstract: Mixtures of(I)polymers of monoethylenically unsaturated dicarboxylic acids having a molecular weight of from 200 to 5,000 and(II)(1) copolymers having a molecular weight of from 10,000 to 150,000 and comprising(a) from 10 to 70% by weight of monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acids or the salts thereof and(b) from 30 to 90% by weight of monoethylenically unsaturated C.sub.3 -C.sub.10 -monocarboxylic acids and/or the salts thereof,(2) graft polymers having a molecular weight of from 5,000 to 150,000, which are obtainable by free radical graft polymerization of(A) monoethylenically unsaturated C.sub.3 -C.sub.10 -carboxylic acids or the anhydrides and/or the salts thereof in the presence of(B) mono-, oligo- or polysaccharides and the derivatives thereof in a weight ratio (A) : (B) of (95 to 20) : (5 to 80), and/or(3) polyaminocarboxylic acids and/or polymers containing aminocarboxylic acid groupscontain the components (I) and (II) in a weight ratio of from 10 : 0.5 to 0.

Abstract: The invention provides a thermoplastic resin composition uniformly and permanently rendered antistatic which comprises (A) 100 parts by weight of a thermoplastic resin, (B) 3-30 parts by weight of a cationic copolymer comprising 80-98 mol % of an ethylene unit and 2-20 mol % of a cationic unit and having a weight-average molecular weight of 1,000-50,000, and (C) 0.

Abstract: Thermoplastic molding materials containA) from 5 to 95% by weight of a semicrystalline, partly aromatic copolyamide composed ofa.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acid,a.sub.2) from 6 to 20 mol % of units which are derived from isophthalic acid,a.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine anda.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms,the molar percentages of the components a.sub.1) to a.sub.4) summing to 100%,B) from 5 to 95% by weight of a copolymer of vinylaromatic compounds with .alpha.,.beta.-unsaturated dicarboxylic anhydrides and .alpha.,.beta.-unsaturated dicarboximides,C) from 0 to 90% by weight of an SAN, ABS or ASA polymer or of a polymer of a C.sub.1 -C.sub.

Abstract: A low molecular weight copolymer reaction product of a copolymer acid of an .alpha.-olefin and an unsaturated carboxylic acid, preferably an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and at least one amino acid compound. The present invention includes a method of preparing the copolymer reaction product. The reaction product has excellent compatibility with other polymers, particularly polyamides. The copolymer reaction product is useful in a method to flush water from pigments.

Abstract: The polyamide resin composition of the present invention comprises 100 parts by weight of a polyamide resin and 5 to 200 parts by weight of a graft-modified ethylene/1-butene random copolymer having a graft quantity of an unsaturated carboxylic acid or its derivative of 0.01 to 10% by weight. The graft-modified ethylene/1-butene random copolymer is a graft-modified product of an ethylene/1-butene random copolymer having a 1-butene content of 15 to 25% by mol, an intrinsic viscosity [.eta.] of 0.5 to 3.5 dl/g, a glass transition temperature (Tg) of not higher than -60.degree. C., a crystallinity of less than 10%, and a parameter (B value) indicating randomness of a copolymerized monomer chain distribution, as measured by a .sup.13 C-NMR method, of 1.0 to 1.4. The polyamide resin composition shows high melt flowability, namely, good moldability, and it can provide a molded article excellent in flexibility, low-temperature impact resistance, resistance to water absorption and resistance to saline solutions.

Abstract: A composition that includes an olefinic-terminated polyalkadiene that includes carboxy ester linking groups and at least one nascent secondary hydroxyl group that is capped with a monoisocyanate. The composition also includes a free radical-polymerizable monomer such as an olefinic monomer and, optionally, a second polymeric material. In a preferred embodiment the composition is an adhesive that also includes a phosphorus-containing compound and an ambient temperature-active redox catalyst system.

Abstract: An improved coating composition having one or more polymeric binders dispersed in a liquid medium, wherein the improvement comprises an anti-sag and anti-settling effective amount of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of one or more .alpha.-olefins and one or more unsaturated carboxylic acids, said backbone having grafted thereto, by a covalent amide linkage, one or more polymeric grafts comprising at least one recurring monomeric unit selected from the group consisting of:--NHC(O)RC(O)NHR.sub.1 and --NH--R--C (O)--or a combination thereof, wherein R is an alkylene group of at least about 2 carbon atom, and R.sub.1 is R or aryl.

Abstract: Composite including a rubber/thermoplastic blend adherent by itself to a thermoplastic material; the blend is in the form of a thermoplastic matrix containing rubber nodules functionalized and vulcanized during the mixing with the thermoplastic. Composite articles obtained by overmoulding the vulcanized rubber/thermoplastic blend onto the thermoplastic.

Abstract: The invention relates to a process for the preparation of composite material formed from a vulcanized elastomer, containing carboxylic acid or dicarboxylic acid anhydride groups, in combination with a thermoplastic elastomer containing polyamide blocks, which comprises vulcanizing an elastomer composition comprising said vulcanizable elastomer, a crosslinking system and, optionally, diverse adjuvants in a mold, one part of which is occupied by said thermoplastic elastomer containing polyamide blocks, the vulcanization temperature being between -15.degree. C. and +5.degree. C. with respect to the Vicat point of said thermoplastic elastomer containing polyamide blocks, the elastomer composition and the vulcanization kinetics being such that the material shows cohesive failure when subjected to stress for separation of the two elastomers.This process leads to composite materials which have excellent properties, in particular in respect of tensile strength (cohesive failure).

Abstract: The invention relates to a polymer mixture which contains(A) 50 to 85 wt. % of a polyether block amide consisting of 30 to 60 wt. % of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 70 to 40 wt. % of polyethylene glycol blocks,(B) 10 to 40 wt. % of a polyether block amide consisting of 65 to 85 wt. % of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 35 to 15 wt. % of polyethylene glycol blocks, and(C) 5 to 40 wt. % of a poly(ethylene-co-vinylacetate-g-maleic anhydride) polymer consisting of 75 to 95 wt. % of ethylene, 5 to 25 wt. % of vinylacetate and 0.1 to 2 wt. % of maleic anhydride,wherein the data relating to wt. % for the constituents (A), (B) and (C) are with reference to the total amount of polymer mixture. The invention also relates to films produced from this polymer mixture and the use of these films to produce waterproof, water vapor permeable, wind resistant textile composite materials, dressing materials and hygiene items.

Abstract: A polymeric composition includes a polyamide; an unmodified polypropylene or unmodified polyethylene; optionally a carboxylic acid or maleic anhydride-grafted ethylene-propylene-diene elastomer; and a carboxylic acid or maleic anhydride-grafted polyethylene or polypropylene.

Abstract: The present invention provides jet ink compositions that produce on glass, metal, plastic, and rubber surfaces messages having high visual intensity, and condensation and water resistance. The inventive compositions comprise a polyamine, a colorant, and an acidic resin. The present invention further provides jet ink compositions further comprising water as the ink carrier. The colorant used in the ink composition of the present invention includes a dye, a pigment, or a polymeric hollow microsphere. The polyamine used in the ink composition of the present invention includes a dendrimer. The ink composition of the present invention may additionally include pH adjusting agents, humectants, biocides, defoamers. The present invention further provides an improved process of jet printing on glass, metal, plastic, and rubber surfaces messages having improved condensation and water resistance, and improved visual intensity, the improvement comprising using the ink composition of the present invention.

Abstract: This invention provides the following resin composition, method for producing the composition, resin slide material, organic solvent resist material and glass fiber reinforced composition obtained therefrom. A polycarbonate/polyolefin based resin composition exhibiting an improved polycarbonate/polyolefin compatibility prepared by melt kneadin (A) a polycarbonate resin; (B) a polyolefin resin; (C) a polyolefin resin that has been modified with at least one functional group selected from the group consisting of epoxy, carboxyl, and an acid anhydride groups; (D) a compound represented by the formula: HOOC--R--NH.sub.2 wherein R represents at lease one member selected from the group consisting of an alkene group, an alkylidene group, and an oligmethylene group containing 5 or more carbon atoms, and phenylene group and naphthylene group optionally substituted with an alkyl group; and optionally, (E) a styrene copolymer resin.

Abstract: Powder coating composition which comprises a hybrid polymer system in granular form of a polymer A formable from monomer(s) by aqueous suspension polymerisation and a polymer B, different to A, which polymer system has been obtained using a process which comprises dissolving polymer B in monomeric material to be used in the formation of polymer A, polymerising the monomer(s) to form polymer A using an aqueous suspension polymerisation process, and removing the aqueous phase to form a hybrid of the polymers A and B in granular form, and wherein polymer A and polymer B bear functional groups for imparting curability to the hybrid polymer system, and wherein further the hybrid polymer system has a number average molecular weight within the range of from 1500 to 15,000.

Abstract: Thermoplastic elastomer compositions comprise a blend of polyamide resin and a covalently-crosslinked acrylate rubber. Such compositions can be prepared by dynamic vulcanization of the rubber in admixture with the polyamide and can exhibit high temperature dimensional stability and low oil swell. The compositions can be used to form a variety of molded, extruded, or calendered articles.

Abstract: The invention relates to a soft thermoplastic elastomeric composition having improved resistance to oil swell and compression set comprising a blend of an engineering thermoplastic resin, a cured rubber concentrate and optionally a compatibilizer and a method for its preparation. The invention further relates to the cured rubber concentrate, a method for its preparation and the use thereof.

Abstract: Addition polymers suitable for imparting stain resistance to nylon carpets and other polyamide products are formed of styrene or other ethylenically unsaturated monomer containing cyclic hydrocarbon groups, sodium vinyl sulphonate or other ethylenically unsaturated strong acid monomer, and ethylenically unsaturated weak acid monomer that is preferably acrylic acid. The proportions of the monomer are, respectively, 7 to 50%, 1 to 20% and 40 to 90% by weight.

Abstract: A thermoplastic elastomer comprising a triblend of engineering resin, dynamically vulcanized alloy of thermoplastic olefin polymer and elastomeric copolymer, and a compatibilizer for the engineering resin and alloy. The compositions retain structural integrity at high temperature, and have good tensile properties, elongation and fluid resistance.

Abstract: Disclosed is a thermoplast resin composition comprising:30 to 97% by weight of at least one of(a) a crystalline thermoplastic resin component and(b) a non-crystalline thermoplastic resin component,3 to 70% by weight of (c) a rubbery polymer component which is ununiformly mixed with at least one of Component (a) and Component (b) and0 to 40% by weight of (d) an inorganic filler,wherein Component (c) forms a network and at least one of the ratio of flexural modulus of Component (a) to Component (c) and that of Component (b) to Component (c) is 5 or more.

Abstract: Ionomer compositions which have improved optical properties are disclosed. These compositions comprise ionomers which can be represented as the polymerization product of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids, metal salts of acrylic and methacrylic acid, and optional alpha, beta-ethylenically-unsaturated comonomers which impart some desired polymer property or properties, such as acidity and/or solvent resistivity. Also disclosed are methods of making these ionomer compositions in a reactive extruder and treating the compositions with acid to impart acidity to the compositions or to only the surface of the compositions.

Abstract: A combination of polymeric components provides desired characteristics in forming medical instruments such as catheters and balloons for dilatation catheters. For example, a balloon material is formed from a blend of polymeric components, including a first crystalline polymeric component and a second softening polymeric component. Where the first two components are generally incompatible, the balloon material can also include a third compatibilizing agent to facilitate blending the first two polymeric components together. The first polymeric component can be a branched or straight chain polyamide having a molecular weight of at least about 5000, or a polyester prepared from aromatic dicarboxylic acids having 8 to 14 carbon atoms or aliphatic dicarboxylic acids having from 2 to 12 carbon atoms, and at least one glycol having the formula HO(CH.sub.2).sub.n OH, where n is an integer from 2 to 10, neopentyl glycol and cyclohexane dimethanol.

Abstract: There is disclosed a thermoplastic resin composition comprising as principal components a [A] thermoplastic resin having a functional group reactive with an amino group, a [B] olefinic polymer and/or styrenic polymer, the subtotal of the above [A]+[B] being 100 parts by weight, and 0.

Abstract: A polyamide composition comprising an aliphatic polyamide such as nylon 6 and an oligomeric aromatic polyamide, such as oligomers of poly(tolylene diisophthalamide), which exhibit improved retention flexural modulus and flexural strength at ambient humidity, i.e. about 50% to about 65%.

Abstract: The present invention provides an antistatic and flame retardant thermoplastic resin composition which comprises [A] 100 weight parts of a thermoplastic resin, [B] 2.0 to 40 weight parts of a bromine-containing organic flame retardant, and [C] 1.0 to 30 weight parts of a (meth)acrylamide-based copolymer and/or a (meth)acrylate ester-based copolymer each comprising 65 to 99 mole percent of an olefin-derived structural unit (I), 0 to 15 mole percent of a (meth)acrylate-derived structural unit (II) and 1 to 35 mole percent of a (meth)acrylamide-derived or (meth)acrylate ester-derived structural unit (III), as arranged linearly, with a weight average molecular weight of 1,000 to 50,000.

Abstract: The invention relates to a water and oil repellency imparting composition which comprises:(a) a fluoroaliphatic radical-containing agent; and(b) a polymer comprising cyclic carboxylic anhydride groups.Additionally, the composition may comprise:(c) a softener and/or a plasticizer. The composition provides water and oil repellent properties to fibrous and other substrates treated therewith and it shows high compatibility with the commonly used softeners.

Abstract: A plug-type connector for electrical coaxial cables includes a hot-melt-type adhesive for filling in the interior space between an outer bushing and centrally located contact bushing, with the contact bushing being configured for receiving an inner conductor of a coaxial cable. The hot-melt-type adhesive seals, fills, and insulates the interior portions of the plug-type connector surrounding the centrally located contact bushing and inner conductor of the associated coaxial cable. The hot-melt-type adhesive consists a polyamide based on dimerized fatty acids, aliphatic amines, and modifiers, and a copolyethylene and additives.

Abstract: A homogeneous polymer blend is disclosed containing components A and B. Accordingly A is about 1 to 30% by weight of a rigid, rod-shaped polymer having a persistence length of at least 10 nm and a ratio of molecular length to molecular diameter of at least 30, and B) is about 70 to 99% by weight of a flexible polymer which contains at least one member selected from the group consisting of non-ionic polar groups, ionic groups and groups convertible into ions. The flexible polymer is any one of polyolefins, polyacrylates, polyamides and polyurethanes. Component A) contains at least one chemically fixed member selected from the group consisting of non-ionic polar group, ionic group and a group convertible into ionic group, in an amount sufficient to render said A) and B) compatible one with the other.

Abstract: Thermoplastic molding materials are obtainable by mixingA) from 0.5 to 5% by weight of a carboxyl-containing polyethylene wax having an average molecular weight M.sub.n (number average value) of from 500 to 20,000 andB) from 0 to 50% by weight of fibrous or particulate fillers or mixtures in a melt ofC) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g followed by post-condensation in the solid phase.

Abstract: Thermoplastic molding resin composition comprising 70-95 weight % of aliphatic polyamide, 5-30 weight % of phenolic resin, and 0-20 % of semi-aromatic amorphous polyamide, and further high density polyamide composition comprising 100 parts by weight of the mixture of 60-95 parts by weight of aliphatic crystalline polyamide, 5-30 parts by weight of phenolic resin, and 200-1000 parts by weight of metal powder or metal oxide powder or inorganic filler having specific gravity of more than 2.6.

Abstract: Polymeric compositions basically consisting of polyamides (nylon) and acrylic rubber, are characterized by their high shock-resistance and modulus, together with high thermal characteristics. They are used in the production of moulded products, which can be used in fields which require high thermal characteristics and high modulus and at the same time a good surface appearance and excellent anti-shock properties.

Abstract: The present invention relates to a composite material having improved thermal and mechanical properties which comprises at least:(I) an outer layer made of a molding composition based on polyvinylidene fluoride, and(II) an intermediate layer which neighbors the inner layer and is made of a molding composition based on a mixture of (a) from 40-90% by weight a polyamide and (b) from 60-10% by weight a polyglutarimide,wherein the two layers (I) and (II) are adhesively bonded to one another.

Abstract: Described herein is a composition comprising at least 10 percent by weight of water and, based on the weight of components (a), (b), and (c); (a) 0 to about 95 percent by weight of a water-compatible polymer having at least two pendant carboxylate groups; (b) 1 to about 60 percent by weight of a polymeric polycarboxylate polymer different from (a) having (1) at least two pendant carboxylate groups and (2) at least one internal amide, thioamide, urea, thiourea, biuret, dithiobiuret, or urethane group; and (c) 2 to about 70 percent by weight of a polyfunctional crosslinking agent having an ionic or potentially ionic moiety counter ion capable of reacting with the carboxylate groups of (a) and (b). Component (b) may also contain fluoroalkyl groups. The composition of the invention provides a water-based coating which, when deposited on a surface to be coated and allowed to dry and form a crosslinked polymer, has a high degree of wear resistance, hardness, and impact resistance.

Abstract: Compositions are disclosed that are the urea derivatives of succinylated polyolefins (maleated polyolefins). The urea derivatives of succinylated polyolefins are of the formula; ##STR1## wherein R is a polyolefin attached at any point along the hydrocarbon chain. The urea derivative of succinylated polyolefins is useful as a coupling agent to couple polyolefins with dissimilar polymers having an excess of unreacted acid groups such as polyesters.

Abstract: A thermoplastic resin composition including (A) an ethylenic copolymer containing at least one of acrylamide derivative units and methacrylamide derivative units and (B) other thermoplastic resin and a laminate containing at least one layer prepared from the thermoplastic resin composition.

Abstract: A non-vulcanized thermoplastic composition comprising a polyamide and an elastomeric halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene is prepared by blending the polyamide and elastomeric copolymer in the presence of specified metal compounds in an amount insufficient for vulcanizing the composition. Optionally, the resulting composition may be subjected to vulcanization.

Abstract: Thermoplastically processable elastomeric block copolyetheresteretheramides from recurring units of the formula ##STR1## in which ##STR2## represents a polyamide segment containing terminal carboxyl groups and having an average molar mass of 700 to 10,000,--O--E--O-- is a poly-(oxytetramethylene)-segment having an average molar mass of 600 to 3,500,--NH--F--NH-- represents a poly-(oxy-1,2-propylene)-segment containing terminal amino groups and having an average molar mass of 350 to 2,500,x and y are integers from 3 to 35 and indicate the number of the respective, randomly arranged, recurring units, the ratio x:y of components A and B varying between 5:1 and 1:5.The ether amides of the present invention can optionally be mixed with additives, fillers, modifiers, or other compatible polymers normally used in tile processing of polyamides and which are suitable for the production of molded articles, for example by injection molding, coinjection, extrusion, blow molding, etc.

Abstract: Compositions of poly(methyl methacrylate) containing alumina trihydrate particularly useful as sheets or other shaped parts in architectural applications such as countertops or wall facings, having improved fire resistance by adding thereto minor amounts of chopped aramid and/or chopped carbon fibers are disclosed.

Abstract: A polyamic acid composite comprising i) a polyamic acid having three dimensional network molecular structure obtained by a ring-opening polyaddition reaction of a tetracarboxylic acid dianhydride with an aromatic diamine and a tri- or tetramino compound and ii) (a) a high polymer component having a different molecular structure from the polyamic acid, which is dispersed in the three dimensional network molecular structure of the polyamic acid and of which molecular chains are interpenetrated with molecular chains of the polyamic acid or (b) a curable resin composition which is dispersed in the three dimensional network molecular structure of the polyamic acid and which is capable of forming a cured resin of which molecular chains are interpenetrated with molecular chains of the polyamic acid, and a polyimide composite obtained from the polyamic acid composite, and process for production thereof.

Abstract: A compatibilizer for polymer blends is presented. The compatibilizer comprises a sulfonated polystyrene and may be used to prepare miscible blends of the sulfonated polystyrene with two or more polymers having polar groups, e.g., polyamides, polyethers, polyesters, polysulfones and polyamines. The sulfonated polystyrene compatibilizer may be used in conjunction with a counterion.

Abstract: The invention provides novel blends and processes for producing such blends which include a polyamide, an olefinic acid copolymer or salt thereof, and a maleated ethylene/propylene rubber, wherein such novel blends may be processed by conventional extrusion and molding techniques, do not require a separate curing step or procedure in the overall production process, and which produces articles which have some physical characteristics similar to those exhibited by thermoplastic elastomers. The inventive compositions exhibit feature excellent resistance to zinc chloride solutions and are formable in a single melt blending step.

Abstract: Hydrogenated butadiene polymers having terminal functional groups have minimum viscosity at any molecular weight when the 1,2-addition is between 30% and 70% Hydrogenated butadiene polymers having about two terminal hydroxyl groups per molecule have surprisingly lower viscosities at 30% to 70% 1,2-addition than similar polymers having either higher or lower amounts of 1,2-addition. The polymers are useful in making coatings, sealants, binders, and block copolymers with polyesters, polyamides, and polycarbonates.

Abstract: A method for cross-linking chlorinated (co)polymers involves reacting such (co)polymers at between 50.degree. and 230.degree. C. in the absence of solvent with an organometallic amino-type derivative of tin, lead, antimony or bismuth to provide cross-linked compositions and shaped objects.

Abstract: The invention relates to thermoplastic molding compounds of 70 to 99.5% by weight thermoplastic polyamides and 30 to 0.5% by weight hydrogenated nitrile rubber and 0 to 29.5% by weight thermoplastic resin components and, optionally, standard additives in typical quantities. These thermoplastic molding compounds show high strength values, very good moldability and, above all, high weathering resistance.

Abstract: The present invention provides a water absorbent matter which is physically and chemically stable, difficult in shifting and falling-off of a water-absorbent resin particle and from a cellulose fiber, and thereby, has superior water-absorbent properties. A water absorbent matter like this is made by containing a water-absorbent resin particle having an acidic group such as a carboxyl group on the surface, a cellulose fiber, and a cationic high-molecular compound having a weight-average molecular weight of 2,000 or more, so that the water-absorbent resin particle is firmly set on the cellulose fiber by a cationic high-molecular compound in the presence of water.

Abstract: This invention relates to readily processable polyamide molding compounds combining very good mechanical and electrical properties with high surface quality based on copolyamides and magnesium hydroxide.

Abstract: An impact modified polyamide composition includes a polyamide continuous phase and a rubbery polymer component which is uniformly distributed throughout the polyamide continuous phase in the form of discrete particles, with the rubber polymer component having a flexible backbone and at least about 40 percent of the monomeric units forming the rubbery polymer having pendant polar groups. In accordance with a preferred aspect of the invention, the rubbery component contains a reinforcing filler which provides for an unexpected improvement in retention of flexural modulus.

Abstract: An aqueous dispersion or solution of a polymer obtained by free radical polymerization and comprising from 0.01 to 10% by weight of carboxyl groups --CO.sub.2 H or sulfo groups --SO.sub.3 H contains, as a crosslinking agent, a compound having at least two vinyl ether groups.

Abstract: Disclosed is a thermoplastic flexible film suitable for wrapping static sensitive devices such as electronic circuit boards. The film is made of an inherently hydrophilic polyether block amide copolymer in blend with a compatible polymer. Compatible polymers typically are amide polymers or are acid copolymers, such as the nylons or ionomers. The film does not have a degree of hydrophilicity unsuitable for packaging static sensitive devices. Yet the film is antistatic without requiring the addition of an antistatic agent.