Abstract: Phosphorus-containing compounds useful for flame retardant epoxy resins are disclosed. The flame retardant epoxy resins may be used to make electrical laminates. This invention is particularly useful in end use applications in which a low bromine or low halogen content is required or desired.

Abstract: Phosphorus-containing compounds useful for flame retardant epoxy resins are disclosed. The flame retardant epoxy resins may be used to make electrical laminates. This invention is particularly useful in end use applications in which a low bromine or low halogen content is required or desired.

Abstract: A resin composition comprises (a) 100 parts by weight of at least one compound selected from the group consisting of phenol resins and brominated phenol resins, (b) 20 to 500 parts by weight of a crystalline olefin resin, provides that copolymers of ethylene with unsaturated carboxylic acid ester or vinyl acetate are precluded, and (c) 0 to 300 parts by weight of a non-aromatic softening agent for rubber. The resin composition is easy to handle in dynamic cross-linking of rubber or a thermoplastic elastomer to give uniform cross-linking. A cross-linked rubber composition or thermoplastic elastomer composition has improved compression set and moldability.

Abstract: There are provided an organic fiber-reinforced composite resin composition which is good in fiber dispersion, excellent in appearance, excellent in mechanical properties such as tensile elongation at break or impact strength and easy in thermal recycle; and a molded article obtained therefrom. An organic fiber-reinforced composite resin composition comprising (a) 60 to 95% by weight of a polyolefin resin (provided that an acid-modified polyolefin resin is excluded) and (b) 40 to 5% by weight (provided that (a)+(b)=100% by weight) of organic fiber to which a polar resin (provided that an acid-modified polyolefin resin is excluded) is attached, or an organic fiber-reinforced composite resin composition comprising organic fiber in an amount of 10 to 200 parts by weight based on 100 parts by weight of a polyolefin resin and having an Izod impact strength at ?40° C. of 10 kJ/m2 or more, and further, an organic fiber-reinforced composite resin molded article obtained therefrom.

Abstract: A prepreg composite material that includes a fiber layer and a resin comprising a thermoset resin component, a curing agent and a fibrous micropulp. The micropulp component is an aramid fiber having a volume average length of from 0.01 to 100 micrometers. The prepreg is useful in composite panel construction for minimizing fluid permeation into the cured structure. This prepreg is particularly suitable for making honeycomb sandwich panels. Film adhesives, liquid and paste resins containing aramid fiber micropulp are also disclosed.

Abstract: A heat-activatable adhesive comprising from about 30 to about 70 wt. % of one or more elastomers, from about 20 to about 60 wt. % of one or more novolac phenolic resins, and an effective amount of one or more crosslinking agents capable of effecting crosslinking of the one or more novolac phenolic resins, wherein the ratio of the mass of the one or more novolac phenolic resins over the mass of the one or more elastomers is at least about 0.65.

Abstract: PURPOSE: The present invention provides a resin composition which can be used in cross-linking of rubber and in dynamic cross-linking of thermoplastic elastomers, wherein it is easy to handle and can yield homogeneous cross-linking, and can improve compression set and molding processability of a cross-linked elastomer composition obtained by cross-linking, such as cross-linked rubber compositions and cross-linked thermoplastic elastomer compositions.

Abstract: This invention is related to a production method of a branched polymer which comprises polymerizing a macromonomer [I], said macromonomer [I] being a vinyl polymer obtainable by radical polymerization and terminally having one polymerizable carbon—carbon double bond-containing group per molecule. Furthermore, by producing the macromonomer by living radical polymerization, in particular atom transfer radical polymerization, it becomes possible to produce the above polymers or gels having well controlled side chain molecular weights.

Abstract: The present invention is directed to a method for producing a copolymer and a copolymer product of the method. The copolymer is prepared by a controlled radical polymerization process, typically an atom transfer radical polymerization process, in which polymerizable alkene monomers are polymerized in the presence of a halogenated polyolefin macroinitiator. The copolymer product of this process is useful in a film-forming composition that adheres strongly to polyolefinic substrates and to which non-polyolefinic film-forming compositions strongly adhere. The copolymer can be applied to a substrate in an adhesion-promoting layer or can be incorporated into a film-forming composition, such as a primer, that contains additional resinous compounds.

Abstract: A process for reducing lip buildup during an extrusion of a polyphenylene ether composition comprises adding a linear low density polyethylene compound to the composition, wherein the amount of linear low density polyethylene compound is less than or equal to about 10 percent by weight based on the amount of polyphenylene ether compound in the composition.

Abstract: The present invention provides high mechanical strength amphiphilic polymeric networks and implantable biological devices made therefrom that are capable of encasing and, thus, immunoisolating biological material from an immunological response of a host individual. The present invention also provides methods for making the amphiphilic networks and implantable biological devices. The present invention also provides a method for the treatment of type I diabetes mellitus comprising the steps of encasing a sufficient amount of islet of Langerhans cells within said biological device, wherein said biological device is capable of immunoisolating said encased islet cells upon implantation into an individual; implanting said biological device into a diabetic host individual; allowing said implanted biological device to remain implanted in said diabetic individual for a time sufficient to normalize the blood glucose level in said diabetic individual.

Abstract: The invention relates to levelling agents for surface coatings having a weight-average molecular weight of from 5000 to 100,000. The levelling agent is a branched polymer comprising a free-radically or ionically polymerized base molecule into which macromonomeric units containing at one end a monomeric unit which has an ethylenically unsaturated bond and possessing a weight-average molecular weight of from 1000 to 30,000 have been incorporated by free-radical or ionic copolymerization, the weight fraction of the macromonomeric units, based on the total weight of the branched polymer, being from 1 to 60% by weight. The invention further relates to the use of appropriate polymers as levelling agents for coating formulations and to coating formulations comprising the levelling agents of the invention.

Abstract: Gel formation is prevented in the reaction between a sulfonyl-chloride-containing resin and a polyamine by first forming an adduct between the resin with an aminophenol. The prevention of gel formation enables sulfonyl-chloride containing resin to be used in admixture with acrylates and epoxy resin to form a polyamine-curable adhesive composition having excellent adhesive properties and chemical resistance.

Abstract: A refrigerant hose for an air conditioner has an inner wall layer formed of a laminate of an inner resin layer and an outer rubber layer bonded by its vulcanization to the resin layer. The rubber layer is of a composition comprising butyl rubber, an adhesive material based on resorcinol and a vulcanizing agent based on an alkylphenol-formaldehyde resin, and having a bromine content of at least 0.5% by weight. The hose having the inner wall layer surrounded by a reinforcing layer and an outer wall layer exhibits a high adhesive strength even at an elevated temperature between its refrigerant-impermeable resin layer and its water-impermeable rubber layer.

Abstract: The rheological properties of a crosslinkable resin system are modified by the presence of a side chain crystalline (SCC) polymer (or a similar crystalline polymer which melts over a narrow temperature range). The polymer dissolves in the curable system at temperatures above the melting point of the crystalline polymer (Tp), but when the system is then cooled to a temperature below Tp, at least partially forms a separate phase in the curable system. Below Tp, this separate phase substantially increases the viscosity of the curable system (i.e. makes it thicker than the same system without the crystalline polymer). This is particularly valuable for sheet molding composites (SMCs) in which the increase in viscosity makes the composites less tacky, and for dry film resists (DFRs). Above Tp, the curable system containing the dissolved crystalline polymer has a viscosity which is substantially less than its viscosity below Tp.

Abstract: A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes a) a rubbery polymer comprising a blend of (i) from about 12% or less by weight of the total composition of an ethylene-propylene-diene terpolymer, (ii) a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, (iii) polyisobutylene, and (iv) a butyl terpolymer, and b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 1000 grams/cm at room temperature, at least 500 grams/cm at 70° C., and supports a static load of at least 300 grams at 70° C.

Abstract: This invention relates to thermoplastic olefin compositions of a low modulus which are suitable for fabrication into flexible skins and liners for applications which heretofore have been serviced by skins and liners produced essentially only from plasticized polyvinyl chloride resin compositions. TPO compositions of this invention comprise an impact modified polypropylene resin and a “plastomer” resin intimately blended in proportions with respect of one to another to provide a blend composition having a 1% secant modulus of less than 40,000 psi, and preferably less than 30,000 psi. Optionally, and preferably, the blend also comprises as a discrete component apart from the impact modified polypropylene an olefin copolymer elastomer or a cross-linked elastomer concentrate. Optionally the blend may contain other polyolefin components to alter its stiffness in desirable ways.

Abstract: The present invention provides a curable resin composition and its application to laminate film, which can form a coating film having excellent performances such as adhesion to various substrates at a low temperature of 150.degree. C. or lower, water resistance and chemical resistance, can be suitably used for various purposes of use, and can be used safely. The curable resin composition comprises a carboxyl group-containing polymer and an oxazoline group-containing polymer, and is characterized in that the carboxyl group-containing polymer contains primary and/or secondary amino groups.

Abstract: The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architecture and narrow polydispersity index, in the presence of an initiating system comprising (i) an initiator having a radically transferrable atom or group, (ii) a transition metal compound, and (iii) a ligand; the present invention is also directed to the synthesis of a macromolecule having at least two halogen groups which can be used as a macroinitiator component (i) to subsequently form a block or graft copolymer by an atom or group transfer radical polymerization process; the present invention is also directed to a process of atom or group transfer radical polymerization for the synthesis of a branched or hyperbranched polymer; in addition, the present invention is directed to a process of atom or group transfer radical polymerization for the synthesis of a ma

Abstract: A polyester-polycarbonate composition comprising (A) at least one polyester prepared by the reaction of at least one alkenediol with at least one dicarboxylic acid or dialkyl ester thereof in the presence of a metallic catalyst, (B) at least one polycarbonate, (C) at least one silyl phosphate, the silyl phosphate being present in an amount effective to inhibit ester-carbonate interchange in the composition, optionally, (D) an organic or inorganic colorant, particularly, acid sensitive organic or inorganic colorants, (E) an impact modifier, and (F) a stabilizer. A method for stabilizing polyester-polycarbonate compositions against ester-carbonate interchange is also provided.

Abstract: The synthesis of star polymers having well-defined arms emanating from well-defined and readily controllable calix?n!arene (n=4 to 16) cores are described. The synthesis is particularly suitable for polyisobutylene and/or polysiloxane star polymers. The synthesis has been achieved using carbocationic and/or anionic ring-opening polymerization techniques to form polymer arms of desired molecular weights, then separately preparing the calixarene derivative core, and finally, linking the arms to the core by transesterification or hydrosilation.

Abstract: The present invention provides a phenolic resin molding material high in flowability and heat stability in the molten state and excellent in curability at high temperatures which contains (a) a high ortho-novolak type phenolic resin having a number-average molecular weight of 350-500 and an ortho-bond/para-bond ratio of 1.5-2.5, (b) hexamethylene-tetramine, (c) a low-molecular polyolefin compound and (d) a filler. This phenolic resin molding material can further contain a crystalline phenolic compound having two or more benzene rings and/or a monohydric aliphatic alcohol to further improve the flowability, heat stability and curability.

Abstract: An improved adhesive roofing tape is based on a combination of brominated butyl rubber and EPDM. A non-diene block terpolymer is interspersed in the cross-liked polymer network. A plasticizer, a phenolic tackifier, a high melting point non-phenolic tackifier and a low melting point non-phenolic tackifier are included to provide resiliency and permanent tack at low temperatures. A method of making the adhesive roofing tape is also provided.

Abstract: The present invention provides a polyamide resin composition which has low water absorption and simultaneously has satisfactory combustion properties. Illustrative compositions contain 20-80 parts by weight of polyamide resin and 80-20 parts by weight of polyphenylene ether resin or a mixture of this resin and polystyrene resin, as well as 0.01-10 parts by weight of a compatibilizer, 1-50 parts by weight of an uncured phenol novolak resin, and 0-80 parts by weight of a rubber component wherein the weights of the compatibilizer, uncured phenol novolak resin and rubber component is based on a total of 100 parts by weight of polyamide and polyphenylene ether resins.

Abstract: A flame retarding resin composition comprising 100 parts by weight of a specific rubber-reinforced resin, 1-200 parts by weight of a phenol resin, 1-200 parts by weight of an organic phosphorus compound, 1-50 parts by weight of a nitrogen-containing compound, 0-40 parts by weight of an oligomer-type polymer containing a functional group, 0-30 parts by weight of a metal compound, a silicon compound, and/or polytetrafluoroethylene, and 0-300 parts by weight of a styrene-type resin. The composition has high impact resistance, excellent heat resistance, and a superior self-fire-extinguishing characteristic.

Abstract: A resin composition prepared by melting and kneading (A) a thermoplastic resin comprising a polyolefin resin together with (B) a functional compound having one or more bond(s) or one or more functional group(s) selected from the group consisting of non-aromatic carbon-carbon multiple bonds, oxirane groups and substituted carboxyl groups, and subsequently mixing thereinto (C) a polar compound having in one molecule one or more polar group(s) selected from the group consisting of substituted carboxyl groups, substituted hydroxyl groups, substituted amino groups, substituted mercapto groups, substituted sulfonic acid groups, oxazoline groups, isocyanato groups and oxirane groups, provided that at least one of the polar groups of (C) is different from at least one of the functional groups of the functional compound (B), as well as a process for producing said resin composition.

Abstract: This invention is the polycapped oligomer adduct of a long chain fatty acid with a multi hydroxy functional or multi epoxy functional compound. This polycapped oligomer is useful in resin compositions to enhance the performance of thermoplastic low profile additives which improve the surface quality of molded composites such as automotive body panels.

Abstract: Process for the preparation of plastoelastomeric preparations comprising an elastomeric phase of an EPDM elastomer and a plastomeric phase of a thermoplastic olefinic polymer, wherein the elastomeric phase is dynamically vulcanized with a vulcanizing binary agent consisting of an alkylphenol-formaldehydic resin and sodium bisulphite.

Abstract: Adhesive compositions based on chlorinated polyolefins having chlorine contents greater than about 60 percent and molecular weights greater than about 500. The adhesive compositions contain the chlorinated polyolefin and a phenolic resin. The chlorinated polyolefins are advantageous in that they can be prepared in an environmentally acceptable manner and can be utilized as a substitute for the traditional chlorinated natural rubber materials utilized in adhesive compositions without compromising adhesive performance. Preferred chlorinated polyolefins are prepared by a process involving the dispersion and chlorination of high surface area polyolefinic particles in an aqueous medium.

Abstract: A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes substantially equal amounts by weight of a) a rubbery polymer comprising a blend of an ethylene-propylenediene terpolymer, a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, and polyisobutylene b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 715 grams/cm at room temperature, at least 300 grams/cm at 70.degree. C., and supports a static load of at least 300 grams at 70.degree. C.

Abstract: Rubber compositions are disclosed for integral attachment of polymeric and metallic materials. Improved bondability is attributed to the use of a selected base rubber blended with a selected class of inorganic or organic fillers, silane compounds and vulcanizing agents such that the finished composition is provided with a specified range of Mooney viscosities. Also disclosed is a method of hose-metal fitting connection by the application of the composition. Gas- and oil-impermeability characteristics are greatly enhanced.

Abstract: A polyphenylene ether resin composition having improved solvent resistance comprising (A) a modified polyphenylene ether obtained by modifying a polyphenylene ether with a modifier such as maleic anhydride and (B) a modified polyolefin obtained by modifying a polyolefin with both a modifier such as maleic anhydride and a vinyl or vinylidene compound such as styrene, and optionally (C) a binder such as phenylenediamine.

Abstract: An extrudable composition comprising hydrocarbon polymer, organophosphite or organophosphate compound and fluorocarbon polymer. The organophosphite or organophosphate and the fluorocarbon polymer are present in the composition in such relative proportions and concentrations as to reduce the occurrence of melt defects during the extrusion of said thermoplastic hydrocarbon polymer.

Abstract: A rubber composition for use in tire, particularly bead filler comprises 2.about.30 parts by weight of a particular modified novolak resin having a self-curability based on 100 parts by weight of rubber ingredient.

Abstract: A polyphenylene ether resin composition having improved solvent resistance comprising (A) a modified polyphenylene ether obtained by modifying a polyphenylene ether with a modifier such as maleic anhydride and (B) a modified polyolefin obtained by modifying a polyolefin with both a modifier such as maleic anhydride and a vinyl or vinylidene compound such as styrene, and optionally (C) a binder such as phenylenediamine.

Abstract: A rubber composition which in the cured state shows improved adhesion to substrate through hydroxyl-reactive adhesives such as polyurethane comprises a first elastomer such as EPDM which shows generally poor adhesion, a minor proportion of a halogenated elastomer, phenol resin, a curative system for covulcanizing the elastomer, and an aminic substance which catalyses reaction between the resin and isocyanate containing adhesives.

Abstract: Disclosed is a high-performance tire in which a bead filler formed of a rubber composition fills up a space between each turn-up portion of the carcass and a major portion of the carcass and extends to some extent along the carcass toward the tread. The rubber composition is anisotropic such that the elastic modulus in the direction circumferential of the tire is distinctly higher than in the direction radial of the tire. Such anisotropy can be produced by incorporating short fiber of a suitable thermoplastic polymer such as nylon into the rubber composition. This tire provides both improved controllability and a good ride.

Abstract: A halogen-free flameproofed thermoplastic molding material consists of a halogen-free thermoplastic resin (A) and one or more further halogen-free components.The thermoplastic resin (A) is present in an amount of from 30 to 90% by weight, based on the molding material. The latter contains, as further components, from 1 to 50% by weight of a phenol/aldehyde resin (B), from 1 to 50% by weight of a nitrogen-containing organic compound (C) and from 3 to 50% by weight of a phosphorus-containing organic compound (D), the percentages in each case being based on the molding material.The molding material is used for the production of flameproofed moldings.

Abstract: A polyolefin composition comprising 100 parts by weight of polyolefin, not less than 0.5 part by weight of a polyamide selected from the group consisting of nylon 6 and nylon 66, and from 3 to 30 percent by weight of novolak based on the weight of the polyamide; and a method of making polyolefin molded articles having surface improved in secondary processable property, which is characterized by treating the surface of molded articles of the polyolefin composition with a solution comprising: (a) not less than 2 percent by weight of a monomer having at least one carbon-carbon double bond and a glycidyl group, (b) 1 to 5 percent by weight of chlorinated polyolefin, and (c) not more than 97 percent by weight of a mixed solvent of 30 to 70 percent by weight of terpenic solvent and 70 to 30 percent by weight of aromatic or chlorinated hydrocarbon solvent.

Abstract: A resin composition comprising(I) a granular or powdery resin which is a condensation product of a phenol, an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens and is characterized by (A) containing spherical primary particles and their secondary agglomerated particles each having a particle diameter of 0.1 to 150 microns, (B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve, and (C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and(II) at least one member selected from the group consisting of (1) a rubbery elastic material, (2) a thermoplastic resin and (3) a curable resin other than said granular or powdery resin (I) and/or a filler material other than said granular or powdery resin (I).

Abstract: A method is provided for producing thermoplastic polymer blends with the exposure of blend constituents to extreme blending conditions minimized by melting the thermoplastic polymers and adjusting their viscosity and elasticity values, through control of their melt temperatures, prior to blending. Where the viscosity and elasticity values are adjusted properly, the desired thermoplastic polymer blend can be produced with a minimum effort.

Abstract: Herein disclosed are a toner composition for the development of electrostatic latent images which comprises a polymer obtained by polymerizing a polymerizable monomer or monomers in the presence of a chlorinated polyolefin, and a method for preparing the same.

Abstract: A resin composition comprising(I) a granular or powdery resin which is a condensation product of a phenol, an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens and is characterized by (A) containing spherical primary particles and their secondary agglomerated particles each having a particle diameter of 0.1 to 150 microns, (B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve, and (C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and(II) at least one member selected from the group consisting of (1) a rubbery elastic material, (2) a thermoplastic resin and (3) a curable reisn other than said granular or powdery resin (I) and/or a filler material other than said granular or powdery resin (I).

Abstract: An aromatic polyester copolymer consisting of 10 to 90 mol % of a recurring unit of the formula: ##STR1## and 90 to 10 mol % of a recurring unit of the formula: ##STR2## and having a logarithmic viscosity number of at least 0.3 as measured in a mixture of phenol and tetrachloroethane (6:4 in weight ratio) at a concentration of 1 g/100 cc at 25.degree. C. and having a terminal carboxyl content of about 80 mol eq./ton or less. This aromatic polyester copolymer has high durability under dry and moist heat as well as high resistance to water crazing and hence can be fabricated into useful articles by various molding techniques.

Abstract: Polyolefin resins are rendered stable against degradation caused by exposure to heat and oxygen in the presence of copper by the incorporation of a novel polymeric stabilizer functioning dually as an antioxidant and a chelating agent.

Abstract: Improved carboxy containing ethylene polymer resins are described which are obtained by reaction with dimethylol phenolic compound.

Abstract: A process is provided for producing a pressure-sensitive carbonless record sheet comprising the steps of preparing a hot melt coating composition, the hot melt coating composition being water insoluble and having a melting point of from about 60.degree. C. to about 140.degree. C. The hot melt coating composition includes a chromogenic material. The chromogenic material is a meltable color developer of the acidic electron accepting type. The hot melt coating composition is heated to a temperature above its melting point and the heated coating composition is applied to a substrate, the coating composition being applied at a coat weight of from about 0.2 pounds to about 8.0 pounds per 3300 square feet of substrate. The coating composition is set by cooling the coated substrate. A novel liquid chromogenic coating composition is produced, the coating composition having a melting point of from about 60.degree. C. to about 140.degree. C.

Abstract: Compositions comprising a mixture of an adhesive copolymer of ethylene and a monoolefinically unsaturated polar comonomer, for example, vinyl acetate, in combination with an olefin rubber, preferably a rubbery copolymer of ethylene and propylene, exhibit excellent adhesive properties, particularly when applied to non-porous surfaces such as metals. Creep resistance can be improved by lightly crosslinking the composition with radiation. Typically thermoplastic in nature, these compositions can be made thermosetting by including in the composition a heat activated crosslinking system. The compositions also exhibit resistance to blocking and flexibility at low temperatures.

Abstract: This invention relates to a cured novolak fiber-reinforced, chlorinated rubber molded article having excellent flameproofness, the main components of which are(A) fibers or a fibrous structure containing at least 50 weight % of cured novolak fibers and(B) a rubber composition consisting mainly of chlorinated rubber as a rubber component,the content of said fibers or fibrous structure being 2-80% by weight; and a process for the preparation of said article comprising adhering an organic solvent solution or dispersion of the rubber composition (B) to the fibers or the fibrous structure (A) or impregnating the fibers or fibrous structure with said solution or dispersion, or mixing the fibers with the rubber composition (B), and without any further processing, or during or after the pressing or molding, vulcanizing said chlorinated rubber composition at a temperature of 100.degree.-200.degree. C.

Abstract: A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes substantially equal amounts by weight of a) a rubbery polymer comprising a blend of an ethylene-propylenediene terpolymer, a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, and polyisobutylene b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 715 grams/cm at room temperature, at least 300 grams/cm at 70° C., and supports a static load of at least 300 grams at 70° C.