Abstract: Disclosed herein is a novel crystalline form of low molecular weight poly(ethylene terephthalate). This crystalline form may be produced from molten or glassy low molecular weight poly(ethylene terephthalate) material by means of rapid heat transfer to or from the material. The poly(ethylene terephthalate) composition is suitable for use as a starting material for solid-state polymerization in order to produce polymers of higher molecular weight. A higher molecular weight polymer product having a unique physical form can be produced by solid-state polymerization of the low molecular weight poly(ethylene terephthalate).

Abstract: A continuous process for preparing polyester prepolymer comprising the steps of esterifying a diacid with a diol, reacting the esterified product with additional diol, and passing the product downward through a countercurrent column reactor while inert gas flows upward through the column reactor. The resulting prepolymer product has fewer acid end groups than the esterified material.

Abstract: Thermosetting powder coating compositions include at least one glycidic-ether containing amorphous and/or semi-crystalline copolyester and a cross-linking agent which is an aliphatic and/or cycloaliphatic polybasic acid and/or its anhydride and/or a polyolmodified anhydride of a polybasic acid and/or amorphous or semi-crystalline carboxyl-functional copolyester resins and/or carboxyl-functional acrylate resins.

Abstract: A toner resin composition and a method of making the same are disclosed. The toner resin composition comprises a polyester resin formed from a reaction between a polybasic acid or anhydride and a polyhydric alcohol, and a polyfunctional epoxy resin which is crosslinked to the polyester resin. The crosslinking is effected in the presence of a catalyst.

Abstract: This invention relates to a thermally stable polyester, comprising:a polyester resin prepared by adding a dicarboxylic acid to a glycol compound, said dicarboxylic acid selected from the group consisting of aliphatic dicarboxylic acids having a total of from 3 to 16 carbon atoms, alicyclic dicarboxylic acids having 7 to 12 carbon atoms, aromatic dicarboxylic acids containing a total of from 8 to 16 carbon atoms, and combinations thereof, and wherein said glycol is selected from the group consisting of glycols having from 2 to 12 carbon atoms, glycol ethers having from 4 to 12 carbon atoms, and combinations thereof,said polyester resin having been prepared in the presence of a catalyst system consisting essentially of one or more antimony compounds which is not reacted with .alpha.-hydroxy carboxylic acids, .alpha.,.beta.-dicarboxylic acids or derivatives thereof.

Abstract: A low-cost way to modulate the reactivity and acid number of polyetherester thermoset resins is disclosed. "Beginning" and "end" methods for making dicyclopentadiene (DCPD)-modified polyetherester resins are described. The "beginning" method comprises first heating a polyether, DCPD, a diol, an insertion catalyst, and a carboxylic acid derivative to produce a mixture that contains the polyether and a DCPD-diol diester adduct. Increasing the temperature causes insertion of the DCPD-diol diester into the polyether to give a DCPD polyetherester resin. The "end" method reacts a polyetherester resin made by insertion with DCPD to give a DCPD polyetherester resin. Compared with DCPD polyester resins, those of the invention give more flexible thermosets. Compared with unmodified polyetherester resins, the DCPD polyetherester resins offer formulators more control over curing, which eliminates mold distortion and shrinking or cracking of thermoset parts.

Abstract: The present invention provides an amino curable polyester oligomer composition having low viscosity and a narrow molecular weight distribution comprising one or a mixture of oligomers (a) and (b): ##STR1## wherein R is the residue of at least one aliphatic, cycloaliphatic or mixed aliphatic/aromatic polycarboxylic-acid having from 2 to about 20 carbon atoms, R.sub.1 is the residue of at least one aliphatic, cycloaliphatic or mixed aliphatic/cycloaliphatic polyol having from 2 to about 20 carbon atoms, A is a radical of the formula: ##STR2## B is a radical of the formula: ##STR3## wherein R.sub.4 is H, OH, halogen or an organic radical containing 1 to 4 carbon atoms, R.sub.5 is a direct bond or an organic radical containing 1 to 20 carbon atoms and R.sub.6 is an organic radical containing 2 to 20 carbon atoms, n is a number averaging from greater than 0 up to less than 2 and p is a number averaging from about 0.

Abstract: Processes for making storage-stable epoxy-capped polyetherester resins are disclosed. In one process, a polyetherester resin is first made by inserting a carboxylic acid derivative into a polyether. Reacting the resin with a capping agent gives an intermediate resin with a reduced content of free carboxylic acid groups. Finally, the intermediate resin reacts with an epoxy compound in the presence of a finishing catalyst under conditions effective to give an epoxy-capped resin. The resins have low weight average molecular weights (less than about 8000), narrow molecular weight distributions (less than 6), and low viscosities, making them an excellent choice for low-VOC formulations. The finishing catalyst helps to minimize resin viscosity drift and improves shelf stability. Curing the resins with a vinyl monomer gives thermosets with an excellent balance of physical properties, including excellent water resistance.

Abstract: The invention relates to novel hot-melt masses consisting of a statistically built-up copolyether ester based on terephthalic acid in a mixture of aliphatic diols. Terephthalic acid is used as the single acid component and its molar amount, relative to the total amount of acid, is 100 molar %. A combination of butane diol, triethylene glycol and polyethylene glycol is present as diol component. The molar amount of butane diol is less than 80 molar %, the amount of triethylene glycol is between 15 and 60 molar % and at least 2 and at the most 10 molar % of a higher-molecular polyethylene glycol component with a molar mass of 600-4000 g/mole is used, relative to the total acid amount and total diol amount of 100 molar % in each instance. The melting point of the copolyether ester adhesive masses is between 90.degree. and 180.degree. C. The copolyetherester hot-melt masses can be used in the hot-melt method and for other known powder coating methods.

Abstract: A novel polyester is provided comprising the reaction product of: (1) an acid functional polyester which is prepared from: (a) a material of the structure: ##STR1## wherein X is a lower alkyl group having from about 1 to about 4 carbon atoms, and R and R' are independently lower alkylene groups having from about 1 to about 4 carbon atoms; (b) a polyol different from (a); and (c) a polyacid; and (2) a monoepoxide containing from about 3 to 20 carbon atoms. The reaction product is carbamoylated. The carbamoylated polyester can be present in a film-forming composition also having a carbamate functional acrylic polymer; and an aminoplast crosslinking agent. Also such a film-forming composition can be a clear coat in a multi-component composite coating composition.

Abstract: Oxysulfonylated polyesters, well suited for conversion into oriented composite polyester films, are prepared by polycondensing a lower alkyl diester of at least one aliphatic dicarboxylic acid and a lower alkyl diester of at least one aromatic dicarboxylic acid bearing an oxysulfonyl substituent, and optionally a lower alkyl diester of at least one aromatic dicarboxylic acid, with at least one diol, in the presence of a catalytically effective amount of at least one titanium compound and at least one manganese carboxylate.

Abstract: Absorbable polymers and blends of acrylated poly(alkylene diglycolate)s and aliphatic polyesters based on lactone monomers such as lactide, glycolide, e-caprolactone, p-dioxanone, and trimethylene carbonate are described. The polymers and blends exhibit a broad range of properties, useful in a variety of medical devices.

Abstract: An elastomeric composition comprising:(A) a polyester elastomer;(B) a thermoplastic polyurethane elastomer; and(C) a multiphase composite interpolymer comprising an elastomeric first phase, a final rigid thermoplastic phase and, optionally, one or more intermediate phases,wherein components (A) and (B) combined are present in the composition in an amount of from about 55 to about 90 percent by weight, based on the total weight of components (A), (B) and (C); and wherein the ratio by weight of component (A) to component (B) is from about 1:5 to about 8:1.

Abstract: A fluid which comprises an olefin-terminated polyester an unmodified polyester and a polymerized .alpha.-olefin is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The fluid is useful as a component of a partitioning composition formulated to have appropriate specific gravity to be positioned intermediate the light and heavy blood phases during centrifugation. A partitioning composition including a fluid of the invention provides a particular advantage in blood collection vessels used in therapeutic drug monitoring, due to the relatively low affinity between the fluid component of the composition and commonly monitored classes of drugs.

Abstract: A medicinal aerosol formulation containing a particulate drug and a dispersing aid derived from a hydroxyacid, a mercapto acid, or an amino acid.

Abstract: A lubricant and release agent for rubber is made from a polyester of a polyethylene glycol or a mixture of polyethylene glycols with an average of 3 to 20 ethylene oxide units per molecule and a linear dicarboxylic acid or a mixture of linear dicarboxylic acids with an average of 4 to 10 carbon atoms. The use of such a lubricant and release agent for reducing the surface friction and stickiness in the case of rubber is also described.

Abstract: This invention relates to linear, water-dispersible sulfopolyesters prepared using high molecular weight polyethylene glycol blocks and low molecular weight polyethylene glycol. The high molecular weight polyethylene glycol has the formula H--(OCH.sub.2 CH.sub.2).sub.n --OH where n is 20 to 500, and the low molecular weight polyethylene glycol has the structure H--(OCH.sub.2 CH.sub.2).sub.n' --OH where n' is 2 to 6. The sulfopolyesters are useful as textile fiber sizes that possess improved adhesion, flexibility, and abrasion resistance.

Abstract: A method for producing glycidic ether-containing amorphous and/or semi-crystalline copolyesters involves first producing a hydroxyl-functional amorphous or semi-crystalline copolyester, and then converting such hydroxyl-functional copolyester with an epihaloalkane to form the desired glycidic ether-containing copolyester.

Abstract: The present invention describes a new crossslinkable and crosslinked aliphatic polyoxaesters and blends thereof that may be used to produce hydrogels, surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The crosslinked aliphatic polyoxaesters of the present invention are formed from an aliphatic polyoxaester a first divalent repeating unit of formula I:?O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--! Iand a second repeating unit selected from the group of formulas consisting of:?--O--R.sub.4 --!.sub.A, II?--O--R.sub.5 --C(O)--!.sub.B, IIIand(?--O--R.sub.5 --C(O)!.sub.P --O--).sub.L G XIand combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatible.

Abstract: A process for making high-performance polyetherester resins and thermosets is disclosed. A polyether polyol reacts with a dicarboxylic acid or anhydride in the presence of an insertion catalyst to produce an acid-terminated polyetherester resin. Reaction of this resin reacts with a primary diol or a diepoxy compound gives a chain-extended polyetherester resin that can be cured with a vinyl monomer to produce a high-performance polyetherester thermoset. Properties of the thermosets rival or exceed those of more expensive high-performance iso and vinyl ester resins.

Abstract: An improved clarity copolyester of a diethylene glycol modified poly(ethylene terephthalate) has a b* value of less than 15, preferably less than 10. The copolyester composition has an inherent viscosity of about 0.4 to 1.0 dL/g and comprises (A) 100 mol percent dicarboxylic acid residue component, (B) 100 mol percent diol residue component, (C) catalyst residues and (D) color control agent residues. The dicarboxylic acid residue component comprises at least 75 mol percent of terephthalic acid residues. The diol residue component comprises 10 to 50 mol percent diethylene glycol residue and 50 to 90 mol percent ethylene glycol residue. The catalyst residues comprise 20 to 100 ppm manganese, 50 to 300 ppm antimony, 0 to 100 ppm titanium and 40 to 150 ppm phosphorus, based on the weight of the copolyester.

Abstract: Absorbable polymers and blends of poly(alkylene diglycolate)s and aliphatic polyesters based on lactone monomers such as lactide, glycolide, 68 -caprolactone, p-dioxanone, and trimethylene carbonate are described. The polymers and blends exhibit a broad range of properties, useful in a variety of medical devices.

Abstract: The invention provides polyesters of terephthalic acid units and ethylene glycol units, having excellent melt moldability. The invention also provides molded articles having excellent transparency, impact resistance, gelation characteristics, appearance, tactility, mechanical properties, heat resistance, chemical resistance, and dimensional precision.

Abstract: A novel process has been developed for the crystallization of poly(ethylenenaphthalenedicarboxylate) (PEN) and its copolymers. The process comprises the step of maintaining the amount of water in said poly(ethylenenaphthalenedicarboxylate) below a critical moisture content ceiling throughout processing such that a separate drying step is not required.

Abstract: A process for producing bottle preforms from the melt of polyethylene terephthalate and/or its copolyesters, includes selectively introducing an inert gas into the continuous flow or partial flow of the polyester melt from a poly-condensation having an intrinsic viscosity between 0.5 and 0.75 dl/g, subsequently bringing the melt to an acetaldehyde content below 10 ppm in a melt after-condensation reactor and to an intrinsic viscosity of 0.75 to 0.95 dl/g and thereafter guiding the melt into an injection molding tool and processing same.

Abstract: The present invention describes aliphatic polyoxaesters containing amines and/or amido groups and blends thereof with other polymers that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit of the formula:[--O--R.sub.12 --].sub.u, XVIand optionally a third repeating unit with a formula selected from the group consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof wherein R.sub.12 contains an internal amine or internal amide group.

Abstract: Polyesters obtained by reacting from 5 to 50 parts of at least one linear or branched, aliphatic or cycloaliphatic, at least dihydric alcohol, from 2 to 40 parts of at least one at least dibasic, aromatic carboxylic acid, from 0 to 40 parts of at least one 2-alkenyldicarboxylic anhydride, from 10 to 30 parts of at least one at least dibasic, linear or branched, aliphatic carboxylic acid, from 0 to 15 parts of an aliphatic, linear or branched hydroxy acid, from 0 to 15 parts of an aliphatic, linear or branched polyamine having at least one primary and at least one secondary or tertiary amino group, from 0 to 15 parts of a glycidyl ester of a branched, aliphatic monocarboxylic acid or of a glycidyl ether of a branched, aliphatic alcohol, and from 0 to 15 parts of polyhydroxyamine are useful, for example, as additives in coating compositions.

Abstract: The present invention describes an aliphatic polyoxaamide polymer and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaamide of the present invention have a first divalent repeating unit of formula I:[X--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--] Iand a second repeating unit selected from the group of formulas consisting of:[--Y--R.sub.17 --].sub.T, I[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.9 --C(O)].sub.P --O--) XIand combinations thereof, wherein X and Y are selected from the group consisting of --O-- and --N(R)--, provided both X and Y are not both --O-- and may be blended with a second polymer that is preferably biocompatable.

Abstract: This invention relates to linear, water-dispersible sulfopolyesters that incorporate higher order polyalkylene glycol units. The sulfopolyesters provide improved abrasion and blocking resistances in polyester fiber sizing applications.

Abstract: The present invention is a polyester fiber formed from a polyester copolymer of dicarboxylic acid and diols. The dicarboxylic acid of the present invention has associated therewith a metal sulfonate group and at least one molecular terminal blocked by a sulfonate compound. The copolymer has the following structure: ##STR1## wherein A is an ester-forming functional group, B is a phenyl group or a naphthyl group, R.sup.1 is an aliphatic hydrocarbon group having 1 to 20 carbon atoms, an alicyclic hydrocarbon group having 3 to 20 carbon atoms, or an aromatic hydrocarbon group having y to 18 carbon atoms, M is an alkali metal or an alkaline earth metal, p and q are independently 0 or 1.

Abstract: Polyesters are formed from diols and dibasic carboxylic acids at an OH/COOH ratio to provide --OH termination, and then end-capped with tribasic carboxylic acids. A major portion of the dibasic carboxylic acids used to form the polyesters have the formula: ##STR1## where x=8-32, y=0-8, x+y=8-32. The polyesters are used as support resins for forming acrylic resin emulsions. The polyester/acrylic acid emulsions are useful, for example, as textile size.

Abstract: A process for producing a polyester comprising as repeating units(i) residues of at least one aliphatic hydroxycarboxylic acid, aminocarboxylic acid, or derivative thereof; or(ii) residues of (a) at least one aliphatic dicarboxylic acid or derivative thereof, (b) at least one aliphatic hydroxyamine, diol, polyol, diamine or polyamine, and optionally (c) at least one aliphatic hydroxycarboxylic acid, aminocarboxylic acid or derivative thereof;comprises reacting the components defined in (i) or components defined in (ii) in the absence of a solvent and in the presence of a lipase.

Abstract: The present invention describes a new aliphatic polyoxaesters that is bioabsorbable and may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit selected from the group of formulas consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof.

Abstract: A novel process for the preparation of a high molecular lactic copolymer polyester is provided, which includes allowing a lactide (A), a polyester terminated by hydroxyl group at both ends (B1), a polyvalent carboxylic acid having 3 or more functionalities and/or acid anhydride thereof (C) to undergo ring opening copolymerization in the presence of a ring opening polymerization catalyst (D). A novel process is also provided which includes allowing the lactide (A) and the polyester (B1) to undergo ring opening copolymerization in the presence of the catalyst (D) to prepare a polyester, and then reacting the polyester with the component (C).

Abstract: A polyalkylene glycol having the general formula:HO--[R--O--].sub.n Hin which n has a value of at least 2 and R is an alkylene radical containing at least 20 carbon atoms is provided. Preferred polyalkylene glycols have an alkylene radical which is a branched alkylene radical containing at least 10 carbon atoms in the main chain and a degree of polymerization such that n is from 4 to 7. The polyalkylene glycol is prepared by the acid-catalyzed polycondensation of a monomeric alkylene glycol at elevated temperature.

Abstract: This invention relates to a polyester resin prepared by adding one or more dicarboxylic acid components to one or more glycol components containing 1,4-cyclohexanedimethanol equalling 100 mole %,the polyester resin having been prepared in the presence of a catalyst/stabilizer system consisting essentially of antimony compounds and phosphorous compounds and compounds selected from the group consisting essentially of zinc compounds, gallium compounds, and silicon compounds.

Abstract: The present invention describes a new aliphatic polyoxaesters and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1l)(R.sub.2)--C(O)- -] Iand a second repeating unit selected from the group of formulas consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatable.

Abstract: Graft and core-shell copolymers are provided which are useful as binders and are prepared from a peroxy-containing copolymer phase a) wherein the copolymer phase contains 0.01 to 20% by weight of residues of an olefinically di-unsaturated peroxy compound and from 80 to 99.99% by weight of residues of at least one comonomer and a polymer phase b) grafted thereon which is obtained by grafting one or more monomers. A process for preparing the copolymers is also provided.

Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.

Abstract: The present invention describes an aliphatic polyoxaamide polymer and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaamide of the present invention have a first divalent repeating unit of formula I:[X--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit selected from the group of formulas consisting of:[--Y--R.sub.17 --].sub.T, I[--O--R.sub.5 --C(O)--].sub.B, and II([--O--R.sub.9 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein X and Y are selected from the group consisting of --O-- and --N(R)--, provided both X and Y are not both --O-- and may be blended with a second polymer that is preferably biocompatable.

Abstract: Coatings obtainable from crosslinkable polyesters resins based on perfluoropolyethers obtainable from hydroxy-terminated PFPE, with acid anhydride and/or a diacid, a polyol with functionality higher than 2 and optionally in mixtures of diols having a functionality of 2, the resins being also even 70% weight/weight soluble in xylene.

Abstract: This invention relates to a polymeric vehicle which reduces or eliminates VOCs in coating compositions by providing a formulated coating composition which does not require an organic solvent for application to a substrate. The polymeric vehicle of the invention comprises at least one linear oligoester diol effective for crosslinking with a crosslinker, and having a number average molecular weight within controlled limits of a polydispersity index effective for controlling the viscosity of the polymeric vehicle.

Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.

Abstract: A process for making polyetheresters is disclosed. A polyether is reacted with a carboxylic acid in the presence of a strong protic acid or a metal salt of a strong protic acid to promote insertion of the carboxylic acid into polyether carbon-oxygen bonds to produce a polyetherester. The polyetheresters are useful for various applications in the polyurethane and unsaturated polyester industries.

Abstract: A medicinal aerosol formulation containing a particulate drug and a dispersing aid derived from a hydroxyacid, a mercapto acid, or an amino acid.

Abstract: Water-soluble, biologically decomposable carbonic acid polyesters having the general formula (I): ##STR1## in which R.sub.1 represents a straight- or branched-chain, saturated or monounsaturated alkyl residue having from 6 to 22 carbon atoms;R.sub.2 represents a hydrogen or methyl group;R.sub.3 represents hydrogen or the group: ##STR2## n is an integer between 0 and 10; m is an integer between 5 and 16, andz is an integer between 1 and 3 are disclosed.The use of these compounds for preparation and lubricating agents for synthetic fibers is also disclosed.

Abstract: Process for adjusting the haze value of ethylene terephthalate homopolymers and low-modified copolymers to a value in the range of 0.5 to 20 NTU while they are being produced by direct esterification and polycondensation, where an amount of antimony and germanium catalyst that is determined on the basis of the desired degree of turbidity is added before or at the start of the esterification step in the absence of other catalysts and other compounds that would affect the haze value, and after achieving a conversion of 90 to 98%, another dose of antimony catalyst corresponding to a total added amount of Sb+Ge in the range of 160 to 350 ppm is added, and then after addition of the catalyst is concluded, a phosphorus stabilizer is added to the reaction mixture in an amount to correspond to 0 to 50 ppm phosphorus.

Abstract: A process is provided for the production of polyaddition and polycondensation products, in which addition products of, on average, 0.5 to 2 moles of ethylene and/or propylene oxide with glycerol are polymerized with polyfunctional isocyanates or polybasic carboxylic acids or carboxylic acid esters a) directly or b) via the intermediate stage of transesterification products with esters of C.sub.1-4 alcohols and C.sub.2-22 fatty acids not including the esters of ricinoleic acid. The addition products of glycerol and ethylene or propylene oxide have been found to be a suitable replacement for trimethylolpropane in such reactions.

Abstract: The present invention is directed to a polyester resin composition comprising a polyester resin and a specific polyalkylene glycol derivative. The polyester resin composition of the invention is excellent in plasticity, compatibility, retention and resistance to volatilization.

Abstract: Disclosed is the use of a laminate of a textile material covered with a copolyetherester film having a water vapor transmission rate of at least 1000 g/m.sup.2 /day for the manufacture therefrom of waterproof rainwear, shoes, tents, and mattress covers, and for the complete covering therewith of molded articles of foam rubber for use in chairs or mattresses, the copolyetherester being composed of a plurality of recurrent intralinear long-chain ester units and short-chain ester units which are randomly joined head-to-tail through ester bonds, with at least 20 wt. % of the long-chain ester units being prepared from a long-chain glycol having a carbon to oxygen ratio in the range of 2.0 to 2.4, which glycol constitutes 15-45 wt. % of the copolyetherester, and with at least 70 wt. % of the short-chain ester units consisting of butylene naphthalate units constituting 20-80 wt. % of the copolyetherester.