Abstract: The flame retardancy of a polyethylene terephthalate ester molding composition is improved by mixing therewith both a salt of oxalic acid and polytetrafluoroethylene having a number average molecular weight Mn of more than 10.sup.5. The oxalic acid salt has the formula K.sub.3 [Al(C.sub.2 O.sub.4).sub.3 ], K.sub.2 [Mg(C.sub.2 O.sub.4).sub.2 ] or Rb.sub.3 [Al(C.sub.2 O.sub.4).sub.3 ]. The preferred composition contains from 5-15% by weight of the oxalic acid salt and 0.1-0.5% by weight of polytetrafluoroethylene. The composition having improved flame retardancy may be used to advantage for making shaped articles by injection molding.

Abstract: A composition and a method to crystallize the composition. The composition comprises a linear saturated polyester, preferably poly(ethylene terephthalate) and from 0.05 percent to 0.6 percent of sodium nitrite. The composition can contain a plasticizer, impact modifier and a filler.

Abstract: Use of a selected antimonate has been found to increase flame-retardancy without lowering thermal resistivity of a polyurethane terephthalate molding blend which contains an ionic hydrocarbon copolymer or ionic salt of a hydrocarbon acid and a low molecular weight compound.

Abstract: A cationic electrocoating composition containing a polyhydroxyamine and polyesters or alkyds and optionally a crosslinker resin.

Abstract: A stable organic polymer-polyol-alkali metal silicate emulsion is produced by mixing an aqueous solution of an alkali metal silicate or alkali metal metasilicate pentahydrate, a liquid polyol, an organic polymer in a fluid state, and a small amount of an acid while heating the mixture to 40.degree. C. to 100.degree. C. and agitating until the mixture emulsifies. The emulsion may be used to produce organic polymer-polyurethane silicate foams and resinous product.

Abstract: Unsaturated polyester resin compositions that have a low shrinking property, and at the same time, an enough strength are provided. The compositions comprises (1) 30-70 parts by weight of an unsaturated polyester obtained by reacting terephthalic acid and/or isophthalic acid and one or more of unsaturated acids selected from the group consisting of maleic anhydride, maleic acid and fumaric acid, with a glycol, and having the unsaturation degree of 1.5-5.0 and the acid value of 18-40, (2) 70-30 parts by weight of .alpha.,.beta.-ethylenically unsaturated monomer, and (3) 5-30 parts by weight of a thermoplastic resin having the number average molecular weight of 5,000-500,000.

Abstract: Flame-retardant antistatic polymer additives are provided which inhibit the buildup of electrostatic charges upon the addition of such compositions to synthetic polymeric fibers, i.e., polyamide fibers, and at the same time do not contribute to the flammability characteristics of such polymeric fibers. The flame-retardant antistatic polymer compositions are useful in combinations with fibers such as polyamide, polyester, polyurea, polyurethane, polysulfonamide, polyolefin and polyacrylic fibers. The antistatic effect is obtained by the process of coating the fibers or dispersing in or on the fibers up to about 12 percent by weight of a polymer composition which is the reaction product of:(a) a polyoxyalkylene compound or polyester thereof and(b) at least one reactant selected from the group consisting of (1) a diol, (2) a polyester and (3) an aliphatic or aromatic diacid or derivative of (3), wherein at least one said reactant is halogenated.

Abstract: An intimate polyblend of about 5-90% by weight of a thermoplastic copolyester or block copolyester elastomer and about 95-10% by weight of a vulcanizable synthetic or natural rubber. The preferred copolyester is a copolyester of polybutylene terephthalate and the prefered block copolyetherester is polybutylene terophthalate-poly (tetramethylene oxide) glycol block copolyester. These polyblends can be vulcanized to elastomeric molded articles which exhibit an excellent oil and oxygen/ozone resistance even at elevated temperatures, a high impact strength, an increased scuff resistance and an improved flexibility at low and high temperatures. The vulcanized molded articles also have an improved adhesive property with polyester fibers or fabrics.

Abstract: Thermoplastic compositions are described comprising blends of epichlorohydrin rubber and poly(alkyl methacrylate) resin. Compositions in which the rubber is cross-linked are also described.

Abstract: Described herein are molding compositions comprising a blend of a polyarylate, a polyester, and at least one thermoplastic polymer selected from the group consisting of an aromatic polycarbonate, a styrene resin, an alkyl acrylate resin, a polyurethane, a vinyl chloride polymer, a poly(aryl ether), a copolyetherester block polymer or a polyhydroxyether. These blends have excellent compatability and can be molded into a variety of articles.

Abstract: Thermoplastic segmented copolyester elastomer consisting essentially of a multiplicity of recurring short chain ester units and long chain ester units joined through ester linkages, said short chain ester units amounting to 15 to 75 percent by weight of said copolyester and being derived from dicarboxylic acid such as an aromatic acid, e.g., terephthalic acid or a mixture of terephthalic acid and isophthalic acid, and an organic diol such as butanediol, and said long chain ester units amounting to 25 to 85 percent by weight of said copolyester and being derived from dicarboxylic acid such as an aromatic acid, e.g., terephthalic acid, or a mixture of terephthalic and isophthalic acids, and a long chain glycol such as polytetramethylene ether glycol, said copolyester having a melt index of less than 150 and a melting point of at least 90.degree. C., modified with 0.

Abstract: Durable excellent water absorption property and antistatic property can be given to synthetic fiber by a simple method. In the method, a polymerization initiator is absorbed in the fiber and then the fiber is applied with a water-soluble polymerizable monomer and heat treated to form a polymer thereon.

Abstract: A flame-retarding thermoplastic polyester resin composition comprising (1) a polyester obtained from a terephthalic acid or an alkyl ester thereof and a glycol having 2 to 4 carbon atoms, (2) an organohalogen compound, (3) an inorganic flame-retarding supplementary agent, and (4) at least one polymer selected from a saponified polyvinyl acetate having a saponification degree of greater than 50%, an ethylene/vinyl acetate copolymer and a saponified ethylene/vinyl acetate copolymer, and optionally (5) a reinforcing agent; and a process for production thereof.

Abstract: A stabilized synthetic polymer composition comprising(1) 100 parts by weight of a synthetic polymer,(2) 0.001 to 5 parts by weight of a poly(alkylated alkenylphenol) composed substantially of monomeric units represented by the following formula (I) ##STR1## wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R.sub.1 represents an alkyl group having 1 to 18 carbon atoms; and R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms; and(3) 0.001 to 5 parts by weight of an auxiliary stabilizer selected from the group consisting of polyhydric alcohol esters of alkylthioalkanoic acids, polyesters of thiodipropionic acid and organic phosphite compounds.

Abstract: A powder marking agent comprising a fine powder which comprises, on a total volume basis,(a) about 48% to about 92% of a thermoplastic linear polyester,(b) about 5 to about 30% of a heat-resistant pigment, and(c) about 2 to about 40% of a fluorine-containing polymer,with the total by volume percent of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% or less and a marking method which comprises applying the powder marking agent described above onto a metal member in a marking pattern.

Abstract: A thermosetting composition is disclosed characterized in that it comprises (by weight) from 60 to 90% of a bis-maleimide of the formula: ##STR1## in which A represents a divalent radical chosen from the group consisting of phenylene radicals and radicals of the formula: ##STR2## where T represents --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --O-- or --SO.sub.2 --; and from 10 to 40% of N-vinylpyrrolid-2-one. The preferred bis-maleimide is N,N'-(4,4'-diphenylmethane)-bis-maleimide. The composition may be modified by the addition of an unsaturated polyester. The composition is useful for the manufacture of molded articles or of articles having a cellular structure, or for the impregnation of electrical coils.

Abstract: Thermoplastic moulding compounds of1. 10-95% by weight of an aromatic polycarbonate in which at least 50% of the linear chains comprise recurrent structural units of the formula ##STR1## in which R represents C.sub.1 -C.sub.3 alkyl and X represents a single bond, --O--, --CO--, --SO.sub.2 --, C.sub.1 -C.sub.10 alkylene, C.sub.1 -C.sub.10 alkylidene, C.sub.5 -C.sub.15 cycloalkylene, C.sub.5 -C.sub.15 cycloalkylidene or ##STR2## 2. 5-90% by weight of a thermoplastic resin and/or 3. 5-90% BY WEIGHT OF RUBBER WHICH MAY BE MODIFIED.