Abstract: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde (UF), melamine formaldehyde (MF), or melamine urea formaldehyde (MUF) resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (i) urea or substituted urea, (ii) melamine or substituted melamine, or (iii) a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (i) urea or substituted urea, (ii) the melamine or substituted melamine, or (iii) the mixture thereof, and the formaldehyde to form a urea formaldehyde, melamine formaldehyde or melamine urea formaldehyde resin, and holding the reaction

Abstract: A polyoxymethylene resin composition, having enhanced tensile elongation, thermal stability, processibility and impact resistance, comprises: (i) from 45 to less than 97% % by weight of a polyoxymethylene resin (Component A); (ii) from 1 to less than 20% by weight of a thermoplastic polyester elastomer (Component B); (iii) from 2 to 35% by weight of a thermoplastic polyurethane elastomer (Component C); and (iv) from 0.1 to less than 10% by weight of a maleic anhydride-grafted aliphatic polyolefinic rubbery polymer (Component D), based on the total weight of Components A, B, C and D.

Abstract: Modified oxymethylene polymers comprising a linear polymer of oxymethylene repeat units, blocked at one end by at least one terminal group selected from the group consisting of an alkylene oxide as an adduct to alcohol and an alkylene oxide as an adduct to carboxylic acid, the linear polymer excluding the terminal group having a number average molecular weight of 10,000-500,000 and the modified oxymethylene polymer having a molecular weight distribution (Mw/Mn) of not more than 2.5, obtained by anionic polymerization of formaldehyde and the alkylene oxide as an adduct to alcohol and/or carboxylic acid. The present modified oxymethylene polymers can give moldings with improved repeated impact resistance at the welded parts and controlled smell generation, and improved sliding characteristics, wherein the sliding characteristics are further improved upon combination with an olefinic polymer.

Abstract: The present invention provides: a process for producing a high molecular weight thermoplastic resin composition, which can give the high molecular weight thermoplastic resin composition with good reproducibility and stably; and uses of the resultant resin composition. The process for producing a high molecular weight thermoplastic resin composition comprises the step of mixing a thermoplastic resin with pyromellitic dianhydride to carry out a reaction therebetween to convert the thermoplastic resin into a high molecular weight one, and this process is characterized in that the pyromellitic dianhydride has at least one of the following properties in particle form: (1) intrinsically linear or needle-like particle forms; (2) a bulk density of 0.4˜0.9 g/ml; and (3) a rest angle of 50˜70 degrees.

Abstract: Disclosed is a metal containing polymer composition comprising; a metal overbased imide or ester functionalized polymer prepared by reacting (A) a polymer comprising (A1) an acidic functionalized polymer or ester functionalized polymer; (A2) an acidic mixed ester-acid of a carboxy containing interpolymer; or (A3) an ester functionalized polymer comprising a lactone and (B) a metal overbased composition that contains a reactive basic functionality comprising (B1) a metal overbased amine wherein the reactive basic functionality is a primary or secondary amino group; (B2) a metal overbased hydroxy substituted carboxylic acid wherein the reactive basic functionality is a hydroxy group; or (B3) a metal overbased dispersant wherein the reactive basic functionality is a primary or secondary amino group.

Abstract: A composition of matter, comprising: a chemically functionalized carboxylate-alumoxane that is functionalized with a chemically reactive substituent, and a reactive compound, wherein the chemically reactive substituent reacts with the reactive compound so as to link the carboxylate-alumoxane to the reactive compound and form a polymer matrix. The functional groups on the carboxylate-alumoxane can vary depending on the desired properties of the matrix. Also, the composition of matter may comprise a cross-linked matrix in which the cross-linked components consist of functionalized alumoxanes.

Abstract: This invention involves a carbamate functional polymer or oligomer made by reacting a cyclic carbonate with ammonia or a primary amine, then reacting the resulting hydroxycarbamate with a polyfucnctional material containing groups reactive with hydroxyl groups to form a polyfunctional carbamate. The polymer formed is mixed with an aminoplast, coated on a substrate and cured to form a crosslinked coating.

Abstract: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde or melamine formaldehyde resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (a) urea, substituted urea, or a mixture thereof, or (b) melamine, substituted melamine, or a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (a) urea, substituted urea, or the mixture thereof, or (b) melamine substituted melamine, or the mixture thereof, and the formaldehyde to form a urea formaldehyde or melamine formaldehyde resin, and holding the reaction mixture at that temperature or a higher tempera

Abstract: The invention pertains to compositions which can be coated onto substrates. These compositions include a combination of a resin blend comprising a first polyester resin and a second polyester resin, wherein the first polyester is different from the second polyester, an aminoplast crosslinking resin, an acid catalyst, and a urea-aldehyde resin. Films prepared from coating compositions made in accordance with the present invention having improved stain resistance. In many instances, films prepared from coating compositions made in accordance with the present invention not only have improved stain resistance, but also have low temperature flexibility.

Abstract: Polymer blends obtainable by thermal treatment, at not less than 150.degree. C., of a mixture containing at least one high-performance polymer and from 15 to 99 parts by weight or preferably from 40 to 90 parts by weight and particularly preferably from 55 to 75 parts by weight, of a polymer containing sulfoxide groups, and crosslinked or partly crosslinked polymer blend obtainable by thermal treatment, at not less than 150.degree. C., of a mixture containing at least one of the high-performance polymers polyesters, partly fluorinated polymers, polyethersulfones, polysulfones, polyetherimides, polyamidoimides or polyacetals and at least one polymer containing sulfoxide groups, are distinguished by high thermal and chemical stability. Polymers containing sulfoxide groups are polyarylene sulfoxides, in particular polyphenylene sulfoxide. The polymer blends are used for the production of fibers, films or shaped articles.

Abstract: A thermoplastic resin composition comprising a thermoplastic resin (A) not forming an anisotropic melt phase and a liquid crystal polymer (B) capable of forming an anisotropic melt phase, an injection molding method thereof and an injection molded article capable of providing a thin molded article having excellent mechanical strength. A thermoplastic resin composition (C) comprises 99 to 50 wt. % of the thermoplastic resin (A) and 1 to 50 wt. % of the liquid crystal polymer (B). The liquid crystal polymer (B) is microscopically dispersed in an island form in the matrix phase of the thermoplastic resin (A) so that when the composition (C) is heat-treated at a temperature not lower than the melting point of the liquid crystal polymer (B) under a non-load state and is then cooled, the liquid crystal polymer (B) has a weight average particle diameter within the range of 10 to 40 micrometers and at least 80 wt. % thereof has a particle diameter within the range of 0.5 to 60 micrometers.

Abstract: A modified polyacetal is obtainable by heating 0.1 to 30 parts by weight of (B) a polymerizable compound having a modifying group such as an epoxy group, a carboxyl group or an acid anhydride group relative to 100 parts by weight of (A) a base polyacetal and introducing the modifying group of the polymerizable compound to the base polyacetal. The base polyacetal (A) includes (A1) a polyacetal selected from polyoxymethylene homopolymers and copolymers, and (A2) a polymerizable polyacetal having a functional group comprising a polymerizablly unsaturated bond. The introduction efficiency of the modifying group can be enhanced by adding 0.01 to 2.5 parts by weight of (C) a free-radical initiator relative to 100 parts by weight of the total amount of the components (A) and (B), and mixing the resultant mixture under a molten state of the polyacetal. According to such method, the affinity of the polyacetal is improved by introducing the modifying group to the base polyacetal with ease and high efficiency.

Abstract: Curable film-forming compositions comprising acrylic polyols, aminoplast and carbamoyl triazines are disclosed. The compositions are useful as clear coats in composite color-plus-clear coatings.

Abstract: The present invention relates to biodegradable biocompatible polyacetals, methods for their preparation, and methods for treating mammals by administration of biodegradable biocompatible polyacetals. A method for forming the biodegradable biocompatible polyacetals combines a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate which is combined with a reducing agent to form the biodegradable biocompatible polyacetal. The resultant biodegradable biocompatible polyacetals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating mammals includes the administration of the biodegradable biocompatible polyacetal in which biologically active compounds or diagnostic labels can be disposed.

Abstract: Novel hydroxy ester, hydroxy amide, and amide functional compounds are provided comprising the reaction product of:(a) an active ester functional material having the structure: ##STR1## wherein R.sup.1 is derived from a polyisocyanate; m is at least 2; R.sup.2 is a lower alkyl or alkoxy group; and R.sup.3 is a lower alkyl group; and(b) ammonia, a diol, or an amino functional material having the structure:R.sup.4 --NH--(R.sup.5).sub.x --(R.sup.6 OR.sup.7).sub.ywherein R.sup.4 is --H or alkanol; R.sup.5 is a polyvalent linking group comprising alkylene, alkylamino, urethane, or amido; x is 0 or 1; R.sup.6 is a divalent linking group comprising alkylene, silane, or siloxane; R.sup.7 is H or a lower alkyl; and y is 1 to 3. The compound is useful in curable film-forming compositions.

Abstract: The use of polymers which are preparable by reaction of(a) polymers that contain vinylamine units, with(b) compounds that contain aldehyde or keto groups, and optionally(c) NH- and/or OH-containing compoundsand which contain aminal, hemiaminal and/or aminal-acetal structures with or without unconverted vinylamine units, as detergent additive for inhibiting dye transfer during the wash, and polymers containing aminal, hemiaminal and/or aminal-acetal structures, obtainable by reaction of(a) polymers that contain vinylamine units, with(b) compounds that contain aldehyde or keto groups, and(c) NH- and/or OH-containing compounds,and detergents which contain the abovementioned polymers in amounts from 0.05 to 10% by weight.

Abstract: The present invention relates to biodegradable biocompatible polyacetals, methods for their preparation, and methods for treating mammals by administration of biodegradable biocompatible polyacetals. A method for forming the biodegradable biocompatible polyacetals combines a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate which is combined with a reducing agent to form the biodegradable biocompatible polyacetal. The resultant biodegradable biocompatible polyacetals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating mammals includes the administration of the biodegradable biocompatible polyacetal in which biologically active compounds or diagnostic labels can be disposed.

Abstract: A polyamide composition which is amorphous and transparent, which has reduced flammability, and which has reduced migration of flame-retardant additive so that it is film-free, includes at least one polyamide which contains cycloaliphatic monomer units and which is amorphous and transparent; and a flame-retardant additive which is present in an amount effective to reduced flammability of the polyamide composition, which is dissolved in the at least one polyamide, and which is at least one alkyl phosphonic acid compound having a general formula: ##STR1## wherein R and R' each represent, independent of each other, an alkyl group having from 1 to 4 carbon atoms, and x=0 or 1. An article molded from this composition is transparent, has reduced flammability, and has reduced migration of flame-retardant additive so that it is film-free.

Abstract: A resin composition comprises (1) a thermoplastic resin and (2) a modified polyacetal wherein a residue of a polymerizable compound having a functional group such as an epoxy group, a carboxyl group, an acid anhydride group or others is introduced to a base polyacetal in a proportion of 0.1 to 30% by weight relative to the base polyacetal. The thermoplastic resin includes various polymers such as an olefinic polymer, a styrenic polymer, a polyester, a polyamide and so on. The thermoplastic resins can be used singly or in combination, and the latter combination includes a combination of two or more species of resins being immiscible with each other, a combination of a polyacetal and a resin except for a polyacetal (e.g. an elastomer, etc.) and other combinations. The relative ratio of (1) the thermoplastic resin to (2) the modified polyacetal is such that the former/the latter equals about 1/99 through 99/1 (by weight).

Abstract: The present invention relates to biodegradable biocompatible polyacetals, methods for their preparation, and methods for treating mammals by administration of biodegradable biocompatible polyacetals. A method for forming the biodegradable biocompatible polyacetals combines a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate which is combined with a reducing agent to form the biodegradable biocompatible polyacetal. The resultant biodegradable biocompatible polyacetals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating mammals includes the administration of the biodegradable biocompatible polyacetal in which biologically active compounds or diagnostic labels can be disposed.

Abstract: Polymers which contain polyacetal blocks are obtainable by polymerizing carboxylates containing aldehyde groups in the presence of initiators and reacting the polymers with at least bifunctional crosslinking agents in the presence of acids or Lewis acids and, if required hydrolyzing the ester groups present as polymerized units, process for the preparation of the polymers containing polyacetal blocks by polymerizing carboxylates containing aldehyde groups in the presence of initiators and reacting the resulting polyacetals containing terminal hydroxyl groups with at least bifunctional crosslinking agents in the presence of acids or Lewis acids, and the use of the resulting polymers as additives in phosphate-free and reduced phosphate detergents and cleaning agents, as scale inhibitors and as dispersants for pigments.

Abstract: An electrophotographic photoconductor includes an electroconductive support, and a photoconductive layer formed thereon containing as an effective component an aromatic polycarbonate resin having a repeat unit of formula (I), or two repeat units of formula (II) and formula (III): ##STR1## wherein n, Ar.sup.1, Ar.sup.2, Ar.sup.3, R.sup.1, R.sup.2 and X are as specified in the specification, ##STR2## wherein k and j are also as specified in the specification.

Abstract: A binder composition, a coating composition containing this binder, a process for its production and use to produce single or multi-layer lacquer coatings, particularly in the automotive sector, are described. The binder composition containsA) 25 to 75 wt. % of the reaction product of one or more carboxy-functionalised poly(meth)acrylic copolymers and/or one or more carboxy-functionalised polyesters, each with an acid value of 15 to 200 mg KOH/g, with one or more lactones,B) 25 to 75 wt. % of one or more epoxy-functionalised crosslinking agents with at least two epoxy functional groups per molecule, with a number average molecular weight (Mn) of 200 to 10000 g/mol,C) 0 to 60 wt. % of one or more polyols with at least two hydroxyl functional groups per molecule,D.sub.1) 0 to 20 wt. % of one or more melamine resins,D.sub.2) 0 to 40 wt. % of one or more capped polyisocyanates, wherein the sum of the weight percentages of components A), B), C), D.sub.1) and D.sub.2) is 100 wt. %, together withE) 0 to 10 wt.

Abstract: The present invention provides for amino-crosslinkable coating formulations based on a mixture of a di- or polyhydroxy functional polymeric component selected from the group consisting of diesters, polyesters, alkyd polymers, acrylic polymers and polycarbonate polymers, a crosslinking agent such as a methylol (alkoxymethyl) amino crosslinking agent, and a reactive additive which is the ester reaction product of a phenol carboxylic acid, preferably para-hydroxybenzoic acid, and an epoxy compound selected from glycidyl ethers, glycidyl esters, linear epoxies and aromatic epoxies. The crosslinkable compositions of this invention may be used to prepare curable coating and paint formulations, and also may contain other ingredients such as a crosslinking catalyst, fillers, pigments and the like. When cured, the coatings of this invention exhibit improved physical and chemical properties when compared with cured coatings which do not contain the ester reaction product additive.

Abstract: An adherent film-forming composition comprising a carbamate-functional polyester polymer or oligomer, a hydroxy functional polymer derived from ethylenically unsaturated monomers and an aminoplast crosslinking agent is disclosed. The coating composition can be used to produce clear coats in composite color plus clear coatings exhibiting good levels of acid etch resistance as well as high intercoat adhesion. Also disclosed are a method of applying a composite color plus clear coating to a substrate and the coated article prepared by such a method.

Abstract: This invention provides a novel cross-linked polyaniline derivative soluble or capable of swelling in general organic solvents, which forms an elastic self-standing film or fibers. The polyaniline derivative substantially comprises a polyaniline having number average molecular weight in a range of from 2,000 to 500,000 represented by the following formula (I) as the main polymer chain, ##STR1## wherein m and n are 0 or an integer of at least 1, m/(m+n)=0-1, and m+n=10-5,000, and cross-linking units represented by the following formula (II) ##STR2## wherein X is a direct bond, a substituted or unsubstituted divalent C.sub.1 -C.sub.30 aliphatic hydrocarbon group, a substituted or unsubstituted divalent aromatic hydrocarbon group, a divalent polysiloxane group or a group derived therefrom, or a divalent group derived from a compound having 2 or more repeating structural units, y.sup.1 and y.sup.

Abstract: A method for property modification of bulk polymers, by initially treating a short chain monomeric organic acid, having a carboxylic group (with dissociation constant between 10.sup.-2 to 10.sup.-6 cm.sup.-1, and less than 8 carbons); with a Group IA, IIA or IIB metal, metal oxide, peroxide, hydroxide, or halogens, for forming a metal ligand or complex metal salt of the acid. The bulk polymers are mixed with the complex metal salts and free radicals are introduced into the mixture by means of oxidizing materials, to functionalize the bulk polymer with ionic polymerization sites. A copolymer formation is effected between the monomeric organic metal salt anion and the bulk polymer, as catalyzed by the metal cation, at such sites. The polymerization is a substantially non-cross linked ionic one resulting from the dissociation parameters and the short chain length of the complex metal salt, which is maintained prior to copolymer formation.

Abstract: A polyacetal composition is provided for use in plastic-plastic wear applications, said composition containing about 85 to 99 weight percent polyacetal, about 0 to 5 weight percent polytetrafluoroethylene fibers, about 0.5 to 5 weight percent ethylene methyl acrylate copolymer, and about 0.5 to 5 weight percent of at least one lubricant. The compositions are particularly useful in forming shaped articles for use especially in conveyor chain applications and gear applications.

Abstract: Novel polymers of general formula: ##STR1## wherein R is an alkyl or aryl group that contains an active hydrogen atom (as determined by the Zerewitinoff test); A is a spacing group having at least one carbon atom; B is a spacing group having at least two carbon atoms; and R and R' are alkyl or aryl groups. The polymer is synthesized via the Mannich pathway, involving formation of an imine intermediate.

Abstract: A water-free, water-free reducible primer composition having a volatile organic content of less than 3 pounds per gallon yields a tough, flexible, and weatherable film when applied to metal or plastic substrates. The base resin is a polyester having an acid number of from about 50 to about 60 and a hydroxyl number of from about 160 to about 200. The polyester is the reaction product of from about 0.45 to about 0.5 mole % of adipic acid, from about 0.35 to about 0.4 mole % of neopentyl glycol, and from about 0.15 to about 0.2 mole % of trimethylolpropane.

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: Blends can be formed which comprise a flexible coil polymer substrate, e.g., of a poly(alkylene terephthalate), and a thermotropic, essentially liquid crystalline oligomer which comprises aromatic units and at least one linear polyalkylene spacer. These blends can be used to form fibers or molded articles.

Abstract: An engineering polyacetal resin composition comprising 0.05-20 parts by weight of a dispersant (B) and 5-40 parts by weight of a filler (C), and 100 parts by weight of a resin ingredient (A) which comprises 90-50% by weight of a polyacetal resin (a) and 10-50% by weight of a polyamide resin (b) having a melting point of up to 230.degree. C., a maximum particle diameter of 0.03-10 .mu.m and a maximum aspect ratio of up to 2, and is dispersed in a matrix of said polyacetal resin (a).

Abstract: Incorporation of at least one lubricant and an ethylene-based polymer of the formula E/X/Y wherein E is ethylene, X is methyl acrylate, butyl acrylate, or ethyl acrylate, and Y is glycidyl methacrylate, glycidyl acrylate, or glycidyl vinyl ether into polyacetal compositions results in compositions having good wear resistance and good melt processing thermal stability. The compositions are useful, for example, when molded into parts to be used in sliding applications, such as gears, cams, and conveyor chains.

Abstract: The present invention provides a polyoxymethylene resin composition which is excellent in wear resistance and is suitable as materials for various sliding parts. The composition comprises (A) 65-98.8% by weight of a polyoxymethylene resin, (B) 0.2-5.0% by weight of a polyfunctional isocyanate compound, (C) 0.5-20% by weight of an olefin polymer containing 30% by weight or more of ethylene and a functional group containing an active hydrogen, and (D) 0.2-10% by weight of polyethylene.

Abstract: Incorporation of a thermoplastic polyurethane and at least one thermoplastic crystalline polymer selected from nylon 6, nylon 612, polypropylene, and polyalkylene terephthalates containing at least one ethylene copolymer into polyacetal polymer results in blends characterized as having improved toughness, or impact strength, and improved elongation over that of a comparable blend of polyacetal and at least one of said crystalline polymers alone.

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: Compositions containing an aryl phosphite and water to hydrolyze the aryl phosphite provide controlled and extended work time when used as hardening agents for the ambient temperature hardening of phenolic resins and for rapid hardening of such resins at modestly elevated temperatures. Pre-solvolysis with small quantities of water, alkanols of 1 to 4 carbon atoms or alkylene glycols of 2 to 4 carbon atoms improve compatibility of trisubstituted phosphites with the resin. Pre-hydrolysis of the phosphites as well as addition of furfuryl alcohol or alkylene glycols of 2 to 4 carbon atoms accelerate the hardening (curing) of the resin. Various compounds such as: carboxylic acid amides, urea, dicyandiamide, N-methylolated amides, N-alkyl 2-pyrrolidinones having 1 to 4 carbon atoms in the alkyl group, those having an internal epoxide group, alkanols, and Schiff bases retard the ambient temperature hardening of the resin with the aryl phosphite hardening agents.

Abstract: A coating composition having a total solids content of at least about 85 wt. %, based on the weight of the composition, a volatile organic chemical content of less than about 15 wt. %, based on the weight of the composition and a Brookfield viscosity of about 500-2,000 centipoises at 25.degree. C. The composition contains a polyester polyol having a weight average molecular weight of about 300-900 and a hydroxy number of about 150-400; at least one thermosettable polyester; an alkoxy aminoplast resin; a reactive diluent present in an amount of 0-30 wt. %, based on the weight of the composition; and an acid catalyst curing agent.

Abstract: A polyacetal resin composition having a volume resistivity lower than 10.sup.14 [.OMEGA..multidot.cm], which comprises (A) 100 parts by weight of a polyacetal resin and (B) 1 to 100 parts by weight of a polyether ester block copolymer which is derived from (a) a dicarboxylic acid component composed mainly of terephthalic acid, (b) a glycol component composed mainly of 1,4-butanediol and (c) a poly(ethylene oxide)glycol having a number average molecular weight of 500 to 20,000 and has a poly(ethylene oxide) dicarboxylate unit content of 20 to 95% by weight, has excellent antistatic characteristics and mechanical characteristics, and especially a high impact resistance.

Abstract: The present invention relates to a polyacetal copolymer comprising a polyoxymethylene group (A) and a vinyl polymer group (B), the copolymer having a structure of the formula (I):A.sub.n --X--B (I)wherein X is a terminal group of B and represents a binding group derived from a compound having at least two carbon atoms and 1 to 4 groups selected from hydroxyl, carboxyl, ester, amino and alkoxy groups, and A.sub.n means that A is present in the quantity of n times in number, and bonds to X, in which n=1 to 4, and the copolymers has a number average molecular weight of 10,000 to 500,000; a process for the production of said copolymer; and a composition comprising said copolymer and a polyvinyl polymer and/or polyoxymethylene.

Abstract: The invention relates to a mixture composed essentially of polyoxymethylene (component A), a rubber-elastic graft copolymer in which the particles have been formed from a rubber-elastic, single-phase core based on polydiene and a hard graft shell (component B) and, if appropriate, a polymeric third component (component C). The invention also relates to a three-component mixture of the components A, B' and C, the core, in the case of B', being preponderantly or entirely composed of poly(meth)acrylic acid ester or silicone rubber instead of polydiene.The shaped articles produced from these mixtures are particularly distinguished by good low-temperature impact strength.

Abstract: The invention relates to a block copolymer according to the general formula A-b-B on the basis of a furan derivative as binding group (b) and the process for the preparation hereof. The furan derivative as binding group (b) is a compound according to formula (I). ##STR1## The block copolymer can simply be prepared in one single reactor and is suitable for use as compatibilizer.

Abstract: The present invention pertains to thermoplastic polymer blends which comprise a monovinylidene aromatic copolymer, an acetal polymer and a thermoplastic polycarbonate resin or a polyester resin derived from the reaction of a dicarboxylic acid and a glycol, and which may also optionally contain an elastomeric material such as a thermoplastic polyurethane or an elastomeric copolyester. The resulting polymer blends have good processability and a beneficial combination of physical and chemical properties including thermal/dimensional stability, impact resistance, chemical resistance and environmental stress crack resistance. Said polymer blends are suitable for use in the preparation of a variety of molded utilitarian articles having good appearance and paintability.

Abstract: Thermoplastic polymer blends comprising a monovinylidene aromatic copolymer, an acetal polymer and an elastomeric material such as a thermoplastic polyurethane or an elastomeric copolyester have good processability and a beneficial combination of physical and chemical properties including thermal/dimensional stability, impact resistance, chemical resistance and creep resistance. Said polymer blends are suitable for use in the preparation of a variety of molded utilitarian articles having good appearance and paintability.

Abstract: An engineering plastic composition with excellent flowability, heat stability, and desirable mechanical properties is provided. The composition contains an engineering plastic material and an aliphatic polyester.

Abstract: Polyoxymethylene molding materials having improved thermal stability and reduced formaldehyde emission consisting essentially of a polyoxymethylene as the main component and containing in addition, relative in each instance to the weight of the polyoxymethylene, 0.1 to 10% by weight of an endocopolymerizate, 0.05 to 3% by weight of a phenolic antioxidant, 0 to 5% by weight carbon black and 0 to 3% by weight of further additives customary in polyoxymethylene molding materials.

Abstract: This invention relates to a core-shell polymer which is useful for polyoxymethylene resin, a polyoxymethylene resin composition containing the core-shell polymer and a molded article made of the polyoxymethylene resin composition.The core-shell polymer comprises a rubbery polymer core and a glassy polymer shell and has substantially no detectable anion.This core-shell polymer makes the molded articles be improved on the impact strength, elongation at the weld line, etc. The molded articles is used as various products (such as gears, reels, etc.).

Abstract: A homogeneous composition having improved curability contains an organopolysiloxane having at least two carboxyl group-containing hydrocarbon groups in each molecule, a polymeric compound which contains at least 2 hydroxyl groups and at least one oxyalkylene unit and a catalytic quantity of an esterification reaction catalyst. The curable composition has good standing compatiblity and experiences a high degree of curing. When cured the composition is useful, for example, as an antistatic additive.

Abstract: A polyoxymethylene resin composition excellent in decorative property and hot-stampability comprising 50-97% by weight of polyoxymethylene resin and 3-50% by weight of polyester random copolymer comprising a diol residue A and a dicarboxylic acid residue B,said diol residue A being represented by the formula --O--R--O , wherein R is an alkyl group of 2-12 carbon atoms, andsaid dicarboxylic acid residue B being represented by at least one of formulae (1), (2) and (3), ##STR1## wherein n is an integer of 2-6, l is an integer of 7-24, and Ph is an aromatic hydrocarbon residue, the proportion of (1) to the sum of (1), (2) and (3) being 5-100% by mol, provided that when said proportion is 100% by mol, (1) consist of at least two different types of (1).