Abstract: The tendency to drip of the melt formed from reinforced moulding materials based on thermoplastic polyesters, provided with a flame-retarding finish, when the latter are subjected to an open flame can be prevented by adding phyllosilicates, and the reduction in the toughness properties thereby caused can be prevented by adding alkali metal salts of aliphatic C.sub.6-22 monocarboxylic acids.

Abstract: The invention relates to a thermoplastic molding composition comprising a blend of a thermoplastic polyester and a reinforcing amount of a reinforcing agent. An improvement in the impact performance of the composition is disclosed to result upon the incorporation therewith of a blocked (end-capped) polyisocyanate prepolymer.

Abstract: Improved injection moldability of polyethylene terephthalates is achieved by the addition of an epoxidized plasticizer and a nucleating agent cooperative with the epoxidized plasticizer to achieve the improved moldability even when the composition is injection molded using mold temperatures of at least as low as 93.degree. C.

Abstract: There is provided an improved molding resin capable of being molded into an article exhibiting reduced tendency to corrode a copper surface when the molded resin and the copper surface are placed in spaced relationship in a common unventilated atmosphere at elevated temperatures, as measured by the Bell Telephone Laboratories Copper Corrosion Test at temperatures within the range of from 150.degree. to 175.degree. C., wherein the molding resin comprises the combination of (a) a butyleneterephthalate polyester comprising a brominated copolyester as a polymeric flame retardant comprising aromatic halogen groups in a flame retardant amount, and (b) an alkylhydroxyphenylalkanoyl-hydrazine in an amount that is within the range of from 0.05 to 0.3% by weight.

Abstract: This invention discloses a high clarity, low haze polyester having improved heat-up rates which contains a very small amount of an infrared absorbent material, such as carbon black. This polyester is very useful as a material for making preforms for trays, containers, and the like. It is especially useful as a material from which beverage bottles can be made.

Abstract: A composition comprising an aromatic copolyestercarbonate article surface impregnated with an ultraviolet light degradation inhibiting effective amount of a compound of the formula ##STR1## wherein R is hydrogen or alkyl of one to twelve carbon atoms, inclusive.

Abstract: The present invention is directed to a thermoplastic molding composition comprising a high molecular weight polyester, a reinforcing amount of a reinforcing agent and a polyepoxy compound characterized in that it contains more than two terminal epoxy functionalities per molecule.

Abstract: Compositions comprising predominately a polycarbonate resin, e.g., poly(bisphenol A carbonate), and a polyester resin, e.g., poly(1,4-butylene terephthalate), alone, or in combination with one or more second resins, are melt stabilized with monosodium phosphate and/or monopotassium phosphate.

Abstract: An inorganic fiber-reinforced polyester resin composition having an improved mold-release property comprises 5% to 60% by weight of inorganic fibers, 0.01% to 2% by weight of at least one esters of pentaerythritol with saturated aliphatic monocarboxylic acids having 10 to 30 carbon atoms, and a balance of polyethylene terephthalate resin.

Abstract: A polyester composition for molding having improved molding properties is disclosed, comprising 100 parts by weight of a polyester comprising mainly polyethylene terephthalate and 0.05 to 10 parts by weight of an aromatic polyamide as a nucleating agent which is uniformly dispersed in the polyester in a substantial size of 50 .mu.m or less. A process for producing the polyester composition is also disclosed.

Abstract: The novel polyester of the present invention is capable of forming an anisotropic melt phase and may be prepared on a relatively economical basis. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 1,4-dioxyphenylene moiety, isophthaloyl moiety and terephthaloyl moiety. The polyester has been found to be capable of undergoing melt extrusion to form quality high performance fibers, films, and three-dimensional shaped articles. The inclusion of terephthaloyl moiety has been found to enhance the modulus and strength of articles formed from the polyester as well as the hydrolytic stability of the same. Additionally, such articles can be subjected to higher use temperatures than if the terephthaloyl moiety were omitted.

Abstract: Colored polyester compositions suitable for formulation into sheets, films, fibers and containers comprising linear thermoplastic polyesters derived from a diol and unpurified terephthalic acid, and containing a color-forming component. The diol can be one or more diols wherein at least a major portion of which is ethylene glycol. The color-forming component can be one or more colorants compatible with the polyester including certain copolymerizable anthraquinone dyes, such as 1,5-bis(2-carboxyphenylthio)anthraquinone and/or 1,5-bis(o-carboxyanilino)anthraquinone.

Abstract: A new and highly useful complex mixture of polyester polyols is prepared by esterifying phthalic anhydride bottoms with aliphatic polyols. This mixture can be reacted with organic isocyanates in the presence of fluorocarbon blowing agent and preferably catalysts to produce cellular polymeric structures.

Abstract: Segmented thermoplastic copolyester elastomers containing recurring polymeric long chain ester units derived from phthalic acids and long chain glycols and short chain ester units derived from phthalic acids and 1,4-butanediol or 1,4-butenediol. The elastomers also contain small amounts of a guanidine stabilizer and small amounts of phosphorus stabilizer and diphenylamine.

Abstract: Segmented thermoplastic copolyester elastomers containing recurring polymeric long chain ester units derived from phthalic acids and long chain glycols and short chain ester units derived from phthalic acids and 1,4-butanediol or 1,4-butenediol. The elastomers also contain small amounts of a quanidine stabilizer and small amounts of phosphorus stabilizer and diphenylamine.

Abstract: Segmented thermoplastic copolyester elastomers containing recurring polymeric long chain ester units derived from phthalic acids and long chain glycols and short chain ester units derived from phthalic acids and 1,4-butanediol or 1,4-butenediol. The elastomers also contain small amounts of a guanidine stabilizer and preferably also contain small amounts of phosphorus stabilizer and diphenylamine.

Abstract: Certain substituted diphenyl ethers improve the flowability of aromatic polyesters and polyester carbonates in the melt.

Abstract: Flame retardant reinforced with polyester resin compositions are disclosed glass fiber and a system of flame retardants represented by the following general formulas (I) and (II), together with antimony trioxide. The flame retardant system is a blend of 1-20 parts by weight of component (I), and 2-30 parts by weight of component (II), provided the weight ratio (I)/(II) of the flame retardant component (I) to (II) is in the range of 0.2<(I)/(II)<4, and that the total amount of flame retardants (I) plus (II) is in the range of 3-40 parts by weight. From 2 to 30 parts by weight of antimony trioxide is present and 5 to 60% by weight of glass fiber is also present, these two percentages being expressed on the basis of the weight of the total resin composition. The resin compositions exhibit outstanding mechanical, thermal properties and moldability in addition to being fire retardant.

Abstract: A polyester which when made into an article such as films, containers, bottles and the like has a very high clarity, a low haze value, and a neutral hue. In the preparation of the resin, an antimony catalyst is utilized along with small amounts of a bluing agent such as a cobalt compound and a phosphate compound with the phosphate compound generally being slightly in excess of an equivalent amount of the cobalt compound. The polyester is made from dicarboxylic acids and preferably aromatic acids such as terephthalic acid reacted with polyhydric alcohols.

Abstract: Polyethylene terephthalate moulding compositions which contain delaminated kaolin may be processed into highly-reflecting objects.

Abstract: A speaker diaphragm comprises a composite film prepared by combining a reinforcing material such as a mica, a needle or fiber filler, or talc, with a polybisphenol phthalate resin consisting of an aromatic dicarboxylic acid and a dihydric phenol.

Abstract: Improved injection moldability of polyethylene terephthalates is achieved by the addition of an epoxidized plasticizer and a nucleating agent cooperative with the epoxidized plasticizer to achieve the improved moldability even when the composition is injection molded using mold temperatures of at least as low as 93.degree. C.

Abstract: A high clarity, low haze polyester having improved heat-up rates contain very small amounts of an infrared absorbent material therein such as carbon black. Such polyesters are used in preforms as for making trays, etc., and especially in molding operations such as in the blow molding of beverage bottles.

Abstract: Disclosed are polyester compositions having special utility in film or sheet form having improved gas and water barrier properties, and comprising homo- or copolyesters derived from terephthalic acid or mixtures of terephthalic acid with acids such as isophthalic, 2,6-naphthalene dicarboxylic, and the like, and a glycol component such as ethylene glycol or 1,4-cyclohexanedimethanol, blended with from about 1 to about 30 weight % of certain bisphenols such as bisphenol-A, and naphthalene diols. Films or sheets of these compositions are characterized by having greatly reduced oxygen, carbon dioxide and water vapor permeabilities.

Abstract: The novel polyester of the present invention is capable of forming an anisotropic melt phase and may be prepared on a relatively economical basis. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 4,4'-dioxybiphenyl moiety and terephthaloyl moiety. The polyester has been found to be capable of undergoing melt extrusion at a sufficiently low temperature to form quality high performance fibers, films, and three-dimensional shaped articles. Such product surprisingly has been found to be capable of exhibiting unusually high modulus characteristics in combination with other desirable properties.

Abstract: There is provided an improved molding resin capable of being molded into an article exhibiting reduced tendency to corrode a copper surface when the molded resin and the copper surface are placed in spaced relationship in a common unventilated atmosphere at elevated temperatures, as measured by the Bell Telephone Laboratories Copper Corrosion Test at temperatures within the range of from 150.degree. to 175.degree. C., wherein the molding resin comprises the combination of (a) a poly(butylene terephthalate) based polymer and aromatic halogen groups in a flame retardant amount, and (b) an alkylhydroxyphenylalkanoyl-hydrazine in an amount that is within the range of from 0.05 to 0.6% by weight, based on the weight of the molding resin, and less than 0.8% by weight based on the polymer.

Abstract: Disclosed are blends of polyesters and esters of glycerin or propylene glycol which are useful as hot-melt adhesives for fabrics.

Abstract: A flame retarded black thermally and hydrolytically stabilized copolyester carbonate having reasonable melt stability is achieved with a relatively low surface area carbon black.

Abstract: Hydrophobic textile materials exhibit reduced tendency to static charge buildup, significantly improved absorbency and reduced soiling tendency when treated with a water-dispersible polyester having structural units of the formula ##STR1## wherein A is, on statistical average, 80 to 100 mol percent of p-phenylene and 0 to 20 mol percent of divalent moieties of the formula ##STR2## and wherein G is, on statistical average, 30 to 90 mol percent of linear or branched divalent alkane moieties having 3 to 6 carbon atoms which may be interrupted by 1 or 2 oxygen atoms, 10 to 30 mol percent of divalent polyether moieties having an average molecular weight of 1,000 to 3,000, and up to 50 mol percent of ethylene moieties, and R is a straight-chain or branched alkyl or alkenyl having 6 to 8 carbon atoms.

Abstract: Moulding compositions based on thermoplastic polymers, which compositions optionally contain fillers, reinforcing fillers and/or fire-retarding agents, have improved tracking resistance, and, in the case where a noninflammable finish has been imparted, they reduce both the corrosiveness on contact metals and the dripping tendency.

Abstract: A polyester, a polyester/polyamide or a polyester/polyamide/polyimide polymers are prepared from (a) a diaryl terephthalate or diaryl isophthalate, and (b) an aromatic polyol or of (a) and a mixture of (b), and an aromatic diamine, or of (a), (b), (c), and (d) a triaryl mellitate, or a copolycarbonate of any of the foregoing including units derived from (e) a diaryl carbonate. The resulting polyester, polyamide, polyester/polyamide or polyester/polyamide/polyimide polymers are adapted for use as an insulating coating on an electrical conductor.

Abstract: Novel nucleating agents have been discovered which are effective in polyesters, especially poly(ethylene terephthalate). The novel nucleating agents are copolymers derived from a poly(alkylene terephthalate) and a sulfonate salt.Also provided by this invention are a process for nucleating polyesters, particularly poly(alkylene terephthalates), especially poly(ethylene terephthalate) and the compositions so produced.

Abstract: Disclosed is an adhesive composition comprising:(a) an amorphous or a crystallizable polyester having a melting point of about 80.degree. C. to about 230.degree. C. and a heat of fusion of 0 to about 18 calories per gram, and(b) from about 1 to about 35% by weight of a compound selected from the group consisting of ##STR1## wherein R.sub.1 is benzyl or phenyl and R.sub.2 is benzyl, phenyl or an alkyl group containing 1 to 10 carbon atoms, and ##STR2## wherein R.sub.3 is phenyl or benzyl, R.sub.4 is phenyl or benzyl and R.sub.5 is an alkyl group containing 1 to 10 carbon atoms.

Abstract: A textile hot-melt adhesive comprises a mixture ofA. a linear, saturated, high-molecular weight copolyester (75-95 mole % of terephthalic acid, 5-25 mole % of (iso-)phthalic acid; 40-70 mole % of butanediol and 30-60 mole % of other aliphatic diols;B. 0.05-0.5% by weight of an inorganic powder (particle diameter: 0.5-3 .mu.m);C. 0.01-0.2% by weight of an alkaline earth metal salt of a fatty acid (particle diameter: 40-60 .mu.m; andD. optionally, customary auxiliary agents and additives.

Abstract: A body solder composed of a blend of 20 to 70 percent by weight of powdered aluminum in a thermoplastic polyester having a melting point of 200.degree. to 220.degree. C. The preferred solders have powdered aluminum with a particle size of from 0.2 to 150 microns and the polyester contains dimerates.

Abstract: A process for coloring linear polyesters in the melt in navy blue and dark blue shades, which process comprises using, as colorant, a mixture consisting of 0.2 to 1% by weight of perylenetetracarboxylic acid bis-methylimide, based on the amount of polyester, and a blue polymer-soluble colorant.

Abstract: The subject invention relates to storage stable dispersions comprising certain aromatic polyesters dispersed in certain polyhydroxyl compounds and their process of preparation. The dispersions are useful for the preparation of polymers containing urethane and/or isocyanurate linkages.

Abstract: An improved melt processable blend is provided comprised of a polymer selected from the group consisting of a polyolefin and a polyester and a low molecular weight liquid crystalline compound which is capable of forming an anisotropic melt phase at the melt processing temperature of the blend.

Abstract: A novel wholly aromatic polyester is provided which contains specified concentrations of 6-oxy-2-naphthoyl and 4-oxy-4'-carboxybiphenyl moieties and which may optionally possess ring substitution (as described) upon such moieties. It has been found that the wholly aromatic polyester of the present invention is capable of exhibiting an anisotropic melt phase which is readily melt processable to form quality fibers, films, molded articles, etc. The color characteristics of the new polymer are excellent (i.e. the polymer is of a white or pale coloration). Additionally, since the new wholly aromatic polyester tends to incorporate a lesser number of ester units per unit weight it is expected to exhibit enhanced stability at elevated temperatures.

Abstract: A partially oriented yarn is provided which comprises a polyester resin and a cyclic acetal of sorbitol and an aromatic aldehyde, said cyclic acetal being present in an amount sufficient to reduce undesired fibrillation and frosting of textile materials made from such yarns which have been drawn and textured.

Abstract: Use of a selected benzoate oligomer has been found to reduce mold deposits and to lower volatility without impairing crystallization rates of polyethylene terephthalate molding blends which contain an ionic hydrocarbon copolymer or ionic salt of a hydrocarbon acid, over polyethylene terephthalate blends which contained the ionic component and other additives.

Abstract: A light-reflecting body, in particular a car headlight, whose wall consists of a poly-(1,4-butylene terephthalate) which contains 10-60% by weight of a filler, having a particle size of at most 30 .mu.m, chosen from the group comprising kaolin, talc, mica, wollastonite, glass beads, zinc sulfide, lithopone, calcium sulfate and barium sulfate, onto which wall is applied a light-reflecting metal layer, if necessary over a previously applied lacquer layer.

Abstract: Described are high-solids solutions of diol/higher polyol/aromatic acid/aliphawtic acid branched polyesters of carefully controlled composition and suitable as components of organic coatings.

Abstract: In an article molded from a non-burning, non-dripping filled polyester composition having a high level of arc resistance and tracking resistance, decay in the arc resistance with time is substantially decreased or prevented by incorporating a minor but critical amount of polyethylene terephthalate. Typical compositions comprise (a) approximately 30 to 60 percent by weight, based on the composition, of a mixture of polyethylene terephthalate and polybutylene terephthalate wherein polyethylene terephthalate comprises approximately 3 to 20 percent by weight; (b) approximately 30 to 60 percent by weight of the composition of a mixture of fiber glass and talc wherein talc comprises approximately 15 to 35 percent by weight of the composition; and (c) an effective amount, up to 20 percent by weight of the composition of a flame retardant additive or a mixture thereof. Typical compositions possess superior electrical properties, comparable to those of thermosetting molding resins.

Abstract: A polyester composition comprises polyethylene terephthalate and 0.1 to 15 wt. %, based on the polyethylene terephthalate, of 2-methyl-1,3-propylene glycol dibenzoate. It may further contain up to 40 wt. % of filler and up to 60 wt. % of a reinforcing fiber.

Abstract: A high clarity, low haze polyester having improved heat-up rates contains very small amounts of an infrared absorbent material therein such as carbon black. Such polyesters are used in preforms as for making trays, etc., and especially in molding operations such as in the blow molding of beverage bottles.

Abstract: The invention relates to a process for coloring water-insoluble thermoplastic plastics with dyestuffs of the formula ##STR1## The dyestuffs are added to the melt of the thermoplastic plastic or to its precursors.

Abstract: The invention relates to moulding compositions based on thermoplastic polyesters and containing finely particulate dolomite. The moulded articles obtained with these compositions have increased stiffness and dimensional stability under heat. In the presence of flame retardants and/or a reinforcing filler, the addition of dolomite also improves the tracking resistance.

Abstract: This disclosure is concerned with glass reinforced polyethylene terephthalate compositions which have improved heat distortion temperatures when molded into cold molds due to the incorporation of an organic imide containing compound having a melting point in excess of 240.degree. C. These compositions have enhanced crystallization velocities which allows them to be molded into colder molds with faster cycle times than is conventional for polyethylene terephthalate compositions and still obtain crystalline parts with optimum properties including heat distortion temperatures. Mold temperatures of less than 120.degree. C. may be utilized without impairment of these properties.

Abstract: A polyester composition comprising the salt of a dimer acid, trimer or salt of a mixture of dimer acid and trimer acid, and from 0.5 to 10 percent fine particulate red phosphorous. The salt is preferably the sodium salt of the dimer and/or trimer acids. Alternately, the salt can be the sodium salt of an organic polymer having pendant carboxyl groups. The red phosphorous can contain a phosphine suppressant such as a metal hydroxide or copper compound. The preferred red phosphorous used is believed to be coated with an aliphatic polyamine and bisphenol A, epichlorohydrin condensate, reacted with acrylonitrile and ethylene oxide produced by American Hoescht as Exolite .sup.TM 405. The composition can contain a filler, plasticizer, impact modifier, and/or a polyepoxide.