Abstract: A composition of matter and a process for the preparation thereof is disclosed for a fibrous composite (e.g., synthetic wood). The fibrous composite contains 50 to 95% by weight carpet and 5 to 50% by weight of a structural adhesive. Structural adhesives effective in this application would include phenol-formaldehyde resins, either of the resole or novalac type, phenol-formaldehyde resins that have at least one other co-monomer present, e.g., bis-phenol A, resorcinol, and other substituted phenols, urea-formaldehyde resins, melamine urea formaldehyde resins, tannin-phenol-formaldehyde resins, diisocyanate resin, epoxy resins, crosslinkable polyvinyl acetate, proteins, e.g., soy flour, blood and polyester resins.

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 specification discloses a conjugate carpet face,yarn comprising trilobal or delta cross-section polyolefin filaments and a plurality of generally co-linear smaller polyamide fibrils embedded within the polyolefin filaments. This yarn has the stain resistant properties of polyolefin based yarns and the resiliency of polyamide based yarns.

Abstract: A hydrogenated block copolymer or hydrogenated block copolymer mixture consisting essentially of (a) hydrogenation product of a star-branched block copolymer represented by the structural formula (A-B).sub.n X wherein A is a polybutadiene block having a 1,2-vinyl content of less than 25% by weight and B is a copolymer block containing 50% by weight or more of a conjugated diene compound whose vinyl content is 25% by weight or more, X is a coupling agent residue and n is an integer of 3 or more, and (b) a hydrogenation product of a straight chain block copolymer represented by the structural formula A-B wherein A and B are as defined above, the weight ratio of the component (a) to the component (b) being 100/0 to 5/95, and a hydrogenated block copolymer composition comprising (I) 1 to 99 parts by weight of said hydrogenated block copolymer or hydrogenated block copolymer mixture and (II) 99 to 1 part by weight of a thermoplastic resin and/or a rubbery polymer.

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: Molded polymer blends comprising a polyolefin, e.g., polyethylene, a poly(alkylene oxide), e.g., poly(ethylene oxide), and a polylactone, e.g., polycaprolactone, are disclosed. The polymer blends are substantially homogeneous and become lubricious when exposed to water. The polymer blends are suitable for use, for example, in personal care articles such as lubricious strips for razors and in medical articles such as, for example, catheters and probes.

Abstract: A carpet having pile threads forming a pile layer, a support layer which consists of fiber or ribbon material of polyolefins or polyester, and a back coating, the pile threads being attached to the support layer possibly by the back coating, and of a plastic of comparatively high resistance to temperature, in particular polyamide 6 or 6.6, and the back coating is attached as lamination to the top material. In order to obtain a strong attachment of the layers to each other, if possible without limiting the recyclability of the carpet, the back coating be effected by means of a lamination adhesive which contains unmelted fibers, in particular polyamide fibers.

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: A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure:M--Z--O--C(R.sup.1 R.sup.2 R.sup.3)wherein M is an alkali metal; Z is a branched or straight chain hydrocarbon group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; and R.sup.1, R.sup.2, and R.sup.3 are independently selected from hydrogen, alkyl, substituted alkyl, aryl or substituted aryl groups, and their employment as initiators in the anionic polymerization of olefin containing monomers in an inert, hydrocarbon solvent comprising reacting an omega-protected-1-haloalkyl with lithium metal dispersion having a particle size between 10 and 300 millimicrons in size, at a temperature between 35.degree. and 130.degree. C. in an alkane solvent containing 5 to 10 carbon atoms.

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: A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure:M--Q.sub.n --Z--OA(R.sup.1 R.sup.2 R.sup.3) (II)wherein M is defined as an alkali metal, selected from the group consisting of lithium, sodium and potassium, Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hydrocarbons and alkenylsubstituted aromatic hydrocarbons; Z is defined as a branched or straight chain hydrocarbon tether or connecting group which contains 3-25 carbon atoms, optionally containing aryl or substituted aryl groups; A is an element selected from Group IVa of the periodic table and R.sup.1, R.sup.2, and R.sup.3 are independently selected from hydrogen, alkyl, substituted alkyl, aryl or substituted aryl groups, and n is an integer from 1 to 5.

Abstract: Chlorinated and chlorosulfonated polyethylenes are produced by chlorinating substantially linear olefin polymers having a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63, a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation: M.sub.w /M.sub.n .ltoreq.(I.sub.10 /I.sub.2)-4.63, a critical shear rate at onset of gross melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a linear olefin polymer having about the same I.sub.2 and M.sub.w /M.sub.n and at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5 and their method of manufacture are disclosed. The chlorosulfonated polyethylenes are produced by treating the chlorinated polyethylenes with a mixture of gaseous chlorine and sulfur dioxide.

Abstract: A crosslinked thermoplastic elastomer blend prepared by the process comprising blending together:(a) a thermoplastic resin containing at least three alternating blocks:A.sub.x --B--A.sub.xwherein A is a block of at least one polymerized unsaturated ethylene monomer of the following formula:--CH.sub.2 --C(R.sub.1)(R.sub.2)--wherein R.sub.1 and R.sub.2 are each a hydrogen, alkyl or aromatic group, provided that when one of R.sub.1 or R.sub.2 is a hydrogen or an alkyl group, the other R group is an aromatic group; andwherein B is a block of a polymer or copolymer containing at least one conjugated diene monomer in polymerized form, having at least four (4) carbon atoms and the following formula for the residual double bond in the diene after polymerization:--C(R.sub.3)(R.sub.4)--C(R.sub.5).dbd.C(R.sub.6)--C(R.sub.7)(R.sub.8)--wherein R.sub.3 -R.sub.

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: The present invention provides a polymeric composition including a blend of at least two different polymers selected from the group consisting of polystyrene, polycarbonate, polyetherimide, polyolefin, polysulphone, polyethersulphone, polyacetal, nylon, polyester, polyphenylene sulphide, polyphenylene oxide and polyetheretherketone and at least one elastomer having a tensile modulus less than about 50,000 p.s.i. Alternatively or additionally, the elastomer may be functionalized to graft with at least one of the polymers. The present invention also provides a method of making a tribological wear system by melt-mixing the polymeric composition to improve the wear resistance of a polymeric composite whose surface bears against another surface, thereby causing friction and wear of the polymeric composite.

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: The invention describes a process for the production of a composite article of at least two component pieces, firmly bonded to one another, of a vulcanized rubber compound on the one hand and a polyamide composition on the other hand, the vulcanized rubber compound being prepared under customary vulcanization conditions in contact with the polyamide composition by vulcanization of a rubber compound which comprises the following components:I. 100 parts by weight of a rubber,II. 0 to 300 parts by weight of fillers,III. 0 to 150 parts by weight of plasticizer,IV. 1 to 10 parts by weight of peroxide vulcanization agent,V. 0 to 4 parts by weight of vulcanization activators andVI. 1 to 10 parts by weight of a silane containing double bonds.

Abstract: Thermoplastic molding materials containA) 4-94% by weight of a partly aromatic, semicrystalline copolyamide having a triamine content of less than 0.5% by weight and composed of(A.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine,(A.sub.2) 0-50% by weight of units derived from .epsilon.-caprolactam,(A.sub.3) 0-80% by weight of units derived from adipic acid and hexametheylenediamine and(A.sub.4) 0-40% by weight of further polyamide-forming monomers,the amount of components (A.sub.2) or (A.sub.3) or (A.sub.4) or of mixtures thereof being not less than 10% by weight,B) 4-94% by weight of a polyolefin homo- or copolymer or a mixture thereof,C) 2-20% by weight of an adhesion promoter,D) 0-20% by weight of a toughening polymer andE) 0-60 % by weight of additives and processing assistants.

Abstract: A process is disclosed for preparing a masterbatch composition of elastomer with a high concentration of aramid fibers, as the sole particulate component, distributed therethroughout.

Abstract: A material with variable viscoelasticity is composed of an electrically insulating polymeric material, and fine particles dispersed therein and capable of electric polarization under an applied electric field. The particles may, for example, be of a conjugated and unsaturated organic compound, a polyelectrolyte, or an organometallic complex salt. The material is capable of a reversible change of viscoelasticity depending on the intensity of the applied electric field.

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: A thermoplastic resin composition containing a polyamide resin composition (C) consisting of a polyamide resin (A) and another thermoplastic resin (B) and at least one modifier (D) is excellent in coatability, mechanical properties, linear expansion coefficient and appearance, can be molded into an article which comprises the polyamide resin (C), wherein the ratio of the percent occupied area of the polyamide resin on the surface of the article to the weight percentage of the polyamide in the polyamide resin composition (C) is not less than 1.2, and/or the ratio of the percent concentration of the polyamide resin on the surface of the article determined on the basis of the nitrogen concentration on the surface of the article to the weight percentage of the polyamide in the polyamide resin composition (C) is not less than 1,2, which article is suited for electric and electronic parts and automobile parts such as a bumper, fender and wheel cover.

Abstract: Improved thermoplastic compositions adopted for easy conversion, e.g., by injection molding or extrusion techniques, into useful shaped articles having high flexibility, and good tear resistance and elasticity, include a polyetheramide, advantageously a polyetheresteramide, and a styrene/diene copolymer, e.g., a copolymer of styrene with butadiene or isoprene, notably a linear or branched chain styrene/butadiene/styrene or styrene/isoprene/styrene copolymer.

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: Impact-modified polyphthalamide resins are improved in ductility and rigidity when blended with polypropylene and a carboxylated polyolefin resin. The blends exhibit an excellent balance of ductility and rigidity.

Abstract: Polymer alloys based on (a) at least one thermoplastic, aromatic polyether-amide having a molecular weight of from 5000 to 40,000 and (b) at least one cycloolefin polymer are prepared. The proportions of the components are 99-50% by weight of (a) and 1-50% by weight of (b), the proportions adding up to 100% by weight, based on the total alloy. The polymer alloys can be used for the production of moldings.

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: A structure which is useful for making containers for dentifrices, such as tubes, is comprised of a structure where the layer which contacts the dentifrice consists of a blend of polybutylene terephthalate and polyethylene. Other layers can consist of adhesives, paper, foils, other polymers and the like depending on the properties desired. A polybutylene terephthalate-polyethylene layer has been found to have a low degree of absorption of flavorant.

Abstract: A delustered nylon filament is disclosed which contains cylindrical striations of polymethylpentene. The filaments have low or no glitter and a bright sheen luster.

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: A process is disclosed for preparing a masterbatch composition of elastomer with a high concentration of aramid fibers, as the sole particulate component, distributed therethroughout.

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: A pneumatic tire is provided having good rolling resistance properties without sacrificing traction. The tire has a tread that contains 2 to 15 phr thermoplastic reinforcing polymer as a replacement for 5 to 25 phr carbon black.

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: The present process for producing aromatic polyamide fibers for reinforcement of rubbers lies in that, in the first step, the fibers are dipped in an epoxy treating solution containing aromatic glycidylamines having 2 or more epoxy groups in one molecule and aromatic amines at a specific ratio and dried and cured, and thereafter, in the second step, the fibers are dipped in a treating solution for the second step containing resorcin formaldehyde resins and rubber latices and dried and cured. More preferably, specific chlorophenol compounds are added to the treating solution for the second step.The aromatic polyamide fibers obtained by the process of the present invention provide rubber products excellent in water resistance when they are used for reinforcement of rubbers, and the products have high adhesive strength in initial adhesion and besides, small decrease in adhesive strength even if they are dipped in water for a long time.

Abstract: The invention relates to impact modifiers for polyamide compositions which improve the impact strength of the polyamides without adversely affecting the flexural modulus of the composition. The impact modifiers comprise blends of halogenated copolymers of a C.sub.4 to C.sub.7 isomonoolefin and an alkyl/styrene with a polyolefin.

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.dbd.O; R.sup.1, R.sup.2 and R.sup.

Abstract: A continuous method for the in-situ polymerization of plastic in an elastomeric material in a form suitable for reinforcing the elastomeric material is provided. The method comprises feeding elastomer and a monomer or monomer precursor of a reinforcing material into a mixing device, mixing the elastomer and the monomer or monomer precursor vigorously, initiating polymerization, and causing the monomers to continue to polymerize until the polymer solidifies when the melting point of the polymer produced exceeds the mixing temperature of the elastomer, terminating polymerization.

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

Abstract: The present invention relates to a process for the preparation of a thermoplastic resin composite comprising conducting polycondensation of a monomer material in a solution of an organic solvent containing an organic solvent soluble polymer to form an aromatic condensation polymer which is insoluble in said organic solvent and a thermoplastic resin composite prepared by the process.

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: The morphology of a polymer alloy displaying miscibility over some region of composition and temperature may be varied by thermodynamically altering the miscibility, such as raising the temperature for an LCST system, to phase separate the components then quenching the alloy below the glass transition temperature of the matrix phase. Such phase separated alloys have improved toughness.

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: Novel blends have been discovered comprising: (A) a polyamide; (B) a polymer that is miscible with polystrene; and (C) a compatibilizer comprising a copolymer having repeating units derived from an aromatic vinyl compound monomer and repeating units derived from vinylphenol monomers, wherein at least about 50% of said aromatic vinyl compound monomers are styrene monomeric units. The blends show improvements in mechanical properties as compared to similar blends without the compatibilizer.

Abstract: A partially crosslinked thermoplastic resin composition is prepared by dynamically heat-treating a thermoplastic resin (A) in the presence of a carbon radical inducing agent (B) comprising a charge transfer complex or a combination of a hydrogen donating compound and a hydrogen accepting compound.

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.