Abstract: This invention relates to a method for producing functionalized cis-1,4-polydienes having a combination of a high cis-1,4-linkage content and a high functionality, the resulting polymers and the vulcanized products containing the polymers. The functionalized cis-1,4-polydienes of the present invention are produced by a method comprising the steps of: (1) preparing a reactive polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solvent, and resulting polymer, where the lanthanide-based catalyst is the combination of or reaction product of (a) a lanthanide compound, (b) an aluminoxane, (c) an organoaluminum compound other than an aluminoxane, and (d) a halogen-containing compound; and (2) contacting the reactive polymer with a functionalizing agent.

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: Branched polyarylene polymers are provided comprising monovalent endcappers, divalent linear units, and polyvalent branching units. The composition of the polymers is controlled by adjusting the ratio of the three types of monomers.

Abstract: The present invention provides an aqueous adhesive composition including a resinous phase dispersed in an aqueous medium, the resinous phase containing (a) a polychloroprene, (b) optionally, a halogenated polyolefin different from (a), and (c) optionally, an aminoplast resin. Further provided is an aqueous adhesive composition of a resinous phase dispersed in an aqueous medium wherein the resinous phase includes (a) a polychloroprene, (b) a halogenated polyolefin different from (a), and (c) a polyurethane polymer having ionic salt groups. A multi-layer composite and methods for adhering a thermoplastic material to a rigid substrate using the aqueous adhesive compositions also are provided.

Abstract: A silane-modified phenolic resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an aldehyde to produce a phenolic novolak resin. The phenolic novolak resin is further reacted with at least one silane compound to produce the silane-modified phenolic resin. The reaction is typically carried out in the presence of an acid or base catalyst. The resulting resin has a lower softening point and can be used as a methylene acceptor compound in a vulcanizable rubber composition.

Abstract: The present invention relates to a conductive composition comprising (i) a fluoropolymer, (ii) an electrically conductive product and (iii) a triblock copolymer ABC, the three blocks A, B and C being linked together in this order, each block being either a homopolymer or a copolymer obtained from two or more monomers, block A being linked to block B and block B to block C by means of a covalent bond or an intermediate molecule linked to one of these blocks via a covalent bond and to the other block via another covalent bond, and such that: block A is compatible with the fluoropolymer, block B is incompatible with the fluoropolymer and is incompatible with block A, block C is incompatible with the fluoropolymer, block A and block B. The invention also relates to the components manufactured with the above composition. These components may be plates, films, tubes, rods, centrifugal pump components and containers.

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 graft copolymer composition and the preparation of the composition by living radical polymerization is disclosed. The polymerization reaction can be initiated at active chlorine sites on the poly(vinyl chloride) backbone in conjunction with a transition metal catalyst and an optional ligand. The graft copolymers are useful as, among others, compatibilizers for blends and alloys, as high heat distortion temperature poly(vinyl chloride) materials, as impact modifiers, and permanently plasticized materials.

Abstract: Disclosed is a method of inhibiting the formation of scale on reactor surfaces in contact with a polymerizing vinyl monomer comprising contacting said monomer with a terpolymer which comprises the condensation reaction product of (A) an aromatic compound that contains the group where Q is OR or SR and R is hydrogen, alkyl from C1 to C15, or aryl, alkaryl, or aralkyl from C6 to C15: (B) about 0.1 to about 10 moles of a carbonyl compound per mole of said aromatic compound; and (C) about 0.1 to about 10 moles of a thiourea per mole of said aromatic compound.

Abstract: A resin matrix with resistances to alkali and acid such as a fluorene-containing epoxy acrylate and/or a benzocyclobutene resin includes at least any one of insulative organic particles and insulative composite particles having an organic component and an inorganic component with the total amount of these particles being in the range of 5-50% by volume, wherein the insulative organic particles and the organic component of the insulative composite particles are allowed to be corroded by either alkali or acid, and wherein not less than 90% by volume of the insulative organic particles and insulative composite particles have a particle diameter in the range of 1-20 micrometers.

Abstract: The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) that includes one or both of a compound (a)(1) having at least one carbamate group or terminal urea group according to the invention and having at least two linking groups that are urethane or urea or a compound (a)(2) having at least two groups selected from carbamate groups, terminal urea groups, or combinations of the two and at least four urethane or urea linking groups. The second component (b) of the coating composition includes an acrylic polymer comprising active hydrogen-containing functional groups reactive with the third component(c). Component (c) of the coating composition is a curing agent that is reactive with the first two components. Preparation of coated articles using the compositions of the invention is also disclosed.

Abstract: Polymer mixtures comprising at least one thermoset and at least one oxidized polyarylene sulfide have particularly good tribological behavior. Oxidized polyarylene sulfides used in these mixtures are polyarylene sulfones or oxidized polyarylene sulfides in which at least 10% of the sulfur bridges have been converted to sulfone bridges. Polyphenylene sulfone is employed with preference. The polymer mixtures are used to produce gearwheels, gear racks, bearings, chains, wheels or gasket materials.

Abstract: The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) having at least one carbamate group or urea group and having a lactone or hydroxy carboxylic acid moiety. The second component (b) of the coating composition is one or more of three materials. First, the second component can be a polymer resin (b)(1) comprising active hydrogen-containing functional groups reactive with the third component(c). Secondly, the second component can be a compound (b)(2) having at least one carbamate group or terminal urea group according to the invention and having at least two linking groups that are urethane or urea. Finally, the second component can be a compound (b)(3) having at least two groups selected from carbamate groups, terminal urea groups, or combinations of the two and at least four urethane or urea linking groups.

Abstract: The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) that includes one or both of a compound (a)(1) having at least one carbamate group or terminal urea group according to the invention and having at least two linking groups that are urethane or urea or a compound (a)(2) having at least two groups selected from carbamate groups, terminal urea groups, or combinations of the two and at least four urethane or urea linking groups. The second component (b) of the coating composition includes a polymer resin comprising active hydrogen-containing functional groups reactive with the third component (c). The resins is selected from polyester, polyurethane, or polyester-polyurethane copolymers Component (c) of the coating composition is a curing agent that is reactive with the first two components. Preparation of coated articles using the compositions of the invention is also disclosed.

Abstract: The present invention provides a curable coating composition comprising(a) a first component comprising at least two functional groups, at least one of which is a carbamate or urea group that is the reaction product of:(1) a hydroxyl group that is the result of a ring-opening reaction between an epoxy group and an organic acid group, and(2) cyanic acid or a carbamate or urea group;(b) a curing agent having a plurality of functional groups that are reactive with component (a), and(c) a second component having functional groups that are reactive with component (a) or component (b) or both components (a) and (b).

Abstract: Curable coating compositions are described comprising(a) a polymer resin comprising active hydrogen-containing functional groups,(b) a curing agent having groups that are reactive with said functional groups on (a), and(c) a compound comprising at least one carbamate group that is the reaction product of:(1) a hydroxyl group that is the result of a ring-opening reaction between an epoxy group and an organic acid group, and(2) cyanic acid or a compound comprising a carbamate group.

Abstract: An adhesion promoter composition and method for enhancing adhesion between a polysulfide polymer and a thermoplastic substrate is provided having a solid resole phenolic resin and a compatible organic solvent, optionally containing a chlorinated polyolefin.

Abstract: Thermoplastic vulcanizate compositions, comprising blends of dynamically vulcanized chlorinated polyolefin rubber, crystalline polyolefin resin, and heat reactive phenolic resin, having improved properties are disclosed.

Abstract: Promoting adhesion (without need for an adhesive) of polyurethane to polyvinyl chloride sheet plasticized with ethylene/carbon monoxide polymer by adding an effective amount of a phenolic resin; particularly novolac resins.

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: By-products from the chlorination of butadiene may be reacted with phenols in the presence of iron catalysts to form Novolak type phenol resins.

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 vinylidene fluoride resin composition which comprises (A) 10 to 95 parts by weight of a vinylidene fluoride resin, (B) 1 to 80 parts by weight of a resin having a poor compatibility with said vinylidene fluoride resin (A), and (C) 1 to 30 parts by weight of a resin having an excellent compatibility with both said vinylidene fluoride resin (A) and said resin (B), total amount of said resins (A), (B) and (C) being 100 parts by weight. The film obtained by baking the composition of the present invention has the structure that the surface side is rich in the VdF resin, and the excellent adhesion to the substrate. Consequently, the film has the excellent chemical resistance, adhesion to a substrate, and the like.

Abstract: The present invention involves an aqueous surface treatment agent for polymer fibers on the basis of a resin preparation, characterized in that it contains1-30 percent by weight of a polar phenoplast of the resol type2-40 percent by weight of a copolymer, crosslinkable with resols, of a radical polymerizable, aromatic hydroxymethyl and/or methyl halogen compound andwater to make 100 percent by weight, wherein, if desired, up to 5 percent by weight further adhesion promoters can be present.This invention also involves the use of the surface treatment agent for the modification of organic or inorganic polymer fibers, preferably polyamide or polyimide fibers, particularly aromatic polyimide fibers, and a process for the modification of polymer fibers.

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: A thermoplastic resin composition containing polyphenylene oxide resin is provided, which is superior in processability and impact resistance as well as heat resistance, chemical resistance and hardness, said thermoplastic resin composition comprising(A) polyphenylene oxide resin or a resin composition containing the same, and(B) ethylene copolymer comprising 50-90% by weight of ethylene, 5-49% by weight of alkyl ester of .alpha.,.beta.-unsaturated carboxylic acid and 0.5-10% by weight of maleic anhydride.

Abstract: A non-asbestos clutch facing has an actual density such that the facing is permeable to air. The clutch facing is preferably a moulded facing containing short reinforcing fibres and having an actual density not greater than 90% of theoretical.The facing may be made by a technique in which a pre-form is prepared, moulded to the desired density and then cured under a pressure such as not to cause substantial further density change.

Abstract: Low density friction products composed of non-asbestos reinforcing fibers embedded in a matrix of binder material, optionally including friction and wear modifiers, are described in which the actual density of the product is less than 72% of the theoretical density. Clutch facings of this density exhibit improved wear characteristics, lower inertia and increased burst strength.

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: Polyphenylene ether compositions having enhanced commercial value as engineering resin, which are excellent in the appearance characteristics, such as surface gloss and weld part beauty, and stress crack resistance. The present resin composition is composed of a polyether resin (PPE) and a rubber reinforced high impact polystyrene (HIPS), if desired, together with a vinyl aromatic compound resin, wherein the PPE has specific characteristics with respect to the intrinsic viscosity, the eluting amount, and others.

Abstract: A rubber mixture is provided for direct bonding to metal surfaces, and includes a base of natural and/or synthetic rubber which contains fillers, processing aids, vulcanizing agents, a bonding agent in the form of a phenol, or derivatives thereof, which form phenolic resins with formaldehyde, a source of formaldehyde, and metallic compounds, preferably oxides of metals, the outer electron shell of which has 2s electrons. The metallic compounds are present in a measured quantity which is about 30 to 400 mMol above the conventional dosage of 40 to 60 mMol for activating the polymerization, with this measured quantity being applicable to each 100 g of rubber. The measured quantity of bonding agent ranges from two to four times the conventional quantity of 40 mMol per 100 g rubber.

Abstract: A resin composition excellent in sliding characteristics, composed of 95 to 30% by weight of an aromatic polysulfone, 2.5 to 60% by weight of a fluorocarbon polymer and 2.5 to 60% by weight of an oxybenzoyl polyester.

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: The invention herein disclosed provides a method for preparing fluoroelastomer film compositions including the steps of dissolving a fluoroelastomer gum selected from the group consisting of copolymers of vinylidene fluoride and hexafluoropropylene, and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene in a solvent, adding a phenoxy resin to the gum solution, evaporating the solvent and baking the resulting film. A method is also provided for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates which includes the steps of dissolving the fluoroelastomer gum in a solvent, adding a phenoxy resin to the gum solution, coating the substrate with the fluoroelastomer gum-phenoxy resin solution, evaporating the solvent and baking the resulting film, leaving a cured film firmly adhered to the substrate.

Abstract: Novel compositions are provided which comprise a polyphenylene ether, optionally a high impact polystyrene, optionally, an effective amount of an aromatic phosphate flame retardant, and a low molecular weight polymer selected from a polyolefin glycol or a polyamide, said composition being free from or excluding a substantial content of polyolefin, such as polyethylene. Such compositions when molded are readily paintable, and exhibit good adhesion between the paint and the molded compositions as distinguished from compositions containing polyolefins, such as polyethylene, which has been found to adversely affect paint adhesion. In addition, the novel compositions possess good or improved Izod and Gardner impact strengths, and in the case of polyolefin glycol, such as polyethylene glycol, the mutual solubility of all the components of the compositions is increased. Included within the disclosure of the invention are methods of preparing and molding such compositions and the molded products obtained therefrom.

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: A thermoplastic composition having an improved impact modifier is described. In an admixture of polyphenylene ether and butadiene-modified alkenyl aromatic resin, a resin which is a network polymer combining poly-alkenyl aromatic and polybutadiene membrane is employed. On subjection to high shear, the continuous membrane phase is shredded into discrete segments which impart an increased impact strength to the composition.

Abstract: A crystalline unsaturated polyester composition for binding foundry sand, said composition comprising:(A) 100 parts by weight of an unsaturated polyester resin which is a mixture of 100 parts by weight of a normally solid, substantially tack-free, crystalline unsaturated polyester and 0 to 50 parts by weight of an unsaturated prepolymer or monomer copolymerizable with said unsaturated polyester or both, and(B) 0.1 to 10 parts by weight of a mixture of at least two of (1) a radical polymerization catalyst which requires a temperature of at least 70.degree. C. but below 90.degree. C. to obtain a half-period value of 10 hours, (2) a radical polymerization catalyst which requires a temperature of at least 90.degree. C. but below 110.degree. C. to obtain a half-period value of 10 hours and (3) a radical polymerization catalyst which requires a temperature of at least 110.degree. C. but not exceeding 130.degree. C. to obtain a half-period value of 10 hours.

Abstract: The invention herein disclosed provides a method for preparing fluoroelastomer film compositions including the steps of dissolving a fluoroelastomer gum selected from the group consisting of copolymers of vinylidene fluoride and hexafluoropropylene, and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene in a solvent, adding a phenoxy resin to the gum solution, evaporating the solvent and baking the resulting film. A method is also provided for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates which includes the steps of dissolving the fluoroelastomer gum in a solvent, adding a phenoxy resin to the gum solution, coating the substrate with the fluoroelastomer gum-phenoxy resin solution, evaporating the solvent and baking the resulting film, leaving a cured film firmly adhered to the substrate.

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: Compositions useful as frictions particles comprised of tri- and/or tetrafunctional phenol, rubber, aldehyde, protective colloid and a reaction promoting compound. The friction particles are formulated into friction elements. A process for producing the friction particles in particulate form.

Abstract: Co-condensates are prepared by condensing from 0.8 to 2.0 moles of butyraldehyde with 1 mole of a phenol at from 80.degree. to 220.degree. C. with the addition, before, during or after the condensation, of from 5 to 50% by weight, based on the mixture of phenol and butyraldehyde, of one or more thermoplastics containing functional groups, which reacts with phenol, butyraldehyde or the phenol-butyraldehyde resin under the condensation conditions. The co-condensates are used as hot-melt adhesives and as binders for nonwovens.