Abstract: A composition, which is particularly useful as an adhesive, as well as a method of making an adhesive composition, and a method of using an adhesive composition are disclosed.

Abstract: An electrical insulating material for use in electrical insulators, for example, for insulated electric wires such as internal wiring of electronic equipment, automobiles or the like, electrical insulating covers produced from the electrical insulating material and a method of electrical insulation using the material are provided. More particularly, it relates to an electrical insulating material which is excellent in mechanical properties and durability, an electrical insulating cover produced from the material and a method of electrical insulation using the material.

Abstract: [Problem] The object is to provide a resin film for metal sheet laminate which endures severe forming owing to excellent formability and impact resistance, and also to excellent adhesion after forming and heating, further gives stable performance independent of forming conditions, and also provides a laminated metal sheet, and a method for manufacturing the same. [Means for Resolution] The resin film for metal sheet laminate has a mixed resin in which a granular resin mainly existing in a state of grains having 0.1 to 5 ?m in diameter is dispersed in a polyester resin having a main basic skeleton of polyethylene terephthalate and/or isophthalic acid copolymerized polyethylene terephthalate, in a range from 3 to 30% by weight in entire resin. The granular resin is a modified polyolefin resin containing a functional group derived from carboxylic acid in a range from 2 to 20% by weight as carboxylic acid.

Abstract: The invention relates to biaxially orientated, co-extruded polyester films, which have at least one base layer that contains a thermoplastic polyester, preferably polyethylene terephthalate and approx. 2 to 60 wt.-% of a cycloolefin copolymer that is preferably composed of norbornene and ethylene units and which have at least one cover layer that is devoid of a COC and which optionally have additional cover or intermediate layers and can contain conventional additives such as stabilisers and anti-blocking agents. Said films are characterized in particular by a degree of whiteness>70%, an opacity>55% and a gloss, (at least on one side)>100 and are therefore suitable for numerous industrial applications. During the production of the films in accordance with the co-extrusion process, up to 70 wt.-% of reclaimed product can be used, without having a noticeable negative effect on the physical properties of the film.

Abstract: This invention provides a water-based composition suitable for use on polyester-based substrates for increasing adhesion between the substrate and a topcoat or overcoat. The composition comprises: (1) a latex polymer formed from the polymerization of at least one monomer selected from the group consisting of bicyclic alkyl (meth)acrylates and aromatic (meth)acrylates and at least one monomer which imparts to the polymer the ability to be crosslinked; (2) a water soluble or water dispersible polymer selected from the group consisting of acrylate-based resins, sulfonated polyester-based resins and combinations thereof; and (3) a crosslinking agent.

Abstract: Disclosed is a method of producing a powdery coating material by using: a curable polyester resin (A) having a hydroxyl group and/or a carboxyl group at the terminals thereof, and further having a number average molecular weight of from 1,000 to 30,000, a glass transition temperature of from 30 to 100° C.; a curing agent (B) which is solid at normal temperature and is capable of being reacted with the hydroxyl group or the carboxyl group of the curable polyester resin (A); and a solvent (C) having a boiling point under normal pressure of from 50 to 130° C.; and comprising a step of kneading the curable polyester resin (A), the curing agent (B) and the solvent (C) under condition in which at 50 to 130° C., not less than 20% by weight of the curing agent (B) is dissolved in the solvent and, then, vapor-removing the solvent (C) under a reduced pressure.

Abstract: The invention relates to an opaque biaxially oriented film made of at least one layer that contains COC. This layer contains a cycloolefin copolymer (COC) in a concentration of 0.5 to 30 wt. % with regard to this layer and contains a polymer made from aliphatic hydroxycarboxylic acid units.

Abstract: Transparent, multilayer, biaxially oriented polyester films having a) a base layer B composed of at least 50% by weight of a thermoplastic polyester and from 0 to 30% by weight of a cycloolefin copolymer and b) an outer layer composed of from 20 to 100% by weight of a cycloolefin copolymer, the glass transition temperature of the cycloolefin copolymers being less than 120° C., possess very good water vapor barrier properties and effective adhesion between the layers. These films are especially suitable for packaging foods and other consumables.

Abstract: Transparent, biaxially oriented polyester films having a base layer composed of at least 5% by weight of a thermoplastic polyester and from 10 to 95% by weight of a cycloolefin copolymer having a glass transition temperature of less than 120° C., possess very good water vapor barrier properties and low haze at the same time. These films are especially suitable for packaging foods and other consumables.

Abstract: The present invention provides an aqueous coating composition comprising a carboxyl-containing, acrylic-modified polyester resin (B) neutralized and dispersed in an aqueous medium, the polyester resin (B) being obtainable by reacting a carboxyl-containing acrylic resin (c) with an epoxy-modified polyester resin (A) prepared by esterification of a carboxyl-containing polyester resin (a) having a number average molecular weight of 1,000 to 30,000 and an acid value of 5 to 200 mg KOH/g with a 1,2-epoxy-containing low-molecular-weight epoxy compound (b) having a number average molecular weight of 1,200 or less.

Abstract: Binders for coating materials that exhibit high flexibility and good hardness contain a polymer-modified resin, containing I) at least one hydroxy-functional polyester, and II) at least one polyacrylate having at least one hydroxy group or at least one carboxy group or both. The polyester I contains an alcohol component containing of from 0.5 to 80 mol % of dicidol.

Abstract: A thermoplastic resin composition comprising: a transparent aromatic thermoplastic resin (a) and a copolyester resin (b) comprising at least two kinds of dicarboxylic acid moieties and one kind of diol moiety, 1 to 50 mol % of the dicarboxylic acid moieties being a naphthalenedicarboxylic acid moiety, the ratio of (a) to the combined amount of (a) and (b) being 55 to 99.99% by weight, and the ratio of (b) being 0.01 to 45% by weight.

Abstract: The invention concerns powder thermosetting coating compositions comprising (a) an amorphous polyester containing carboxyl groups, rich in isophthalic acid and neopentylglycol, optionally branched with a polycarboxylic acid or a polyol containing at least three functional groups; (b) a semicrystalline polyester containing carboxyl groups prepared from one or several saturated aliphatic dicarboxylic acids with linear chain, and from a saturated aliphatic diol with linear or cyclic chain optionally branched with a polycarboxylic acid or with a polyol containing at least three functional groups, and having a melting point (Tm) of at least 40° C. and an acid value of 5 to 50 mg of KOH/g, and (c) a cross-linking agent. Said compositions are useful for preparing powder paints and varnishes providing excellent quality coatings whereof the brilliance, measured at an angle of 60°, according to the ASTM D 523 standard is always less than 50%, that is half-gloss or matt coatings.

Abstract: A binder for a coating composition is formed using a principal resin polyol, in combination with a hyper-branched polyol as a reactive intermediate, and at least one crosslinker. The principal resin polyol is at least one of a polyester polyol, a polyether polyol, and a polyacrylate. Hyper-branched polyester polyols may be used as reactive diluents, which will cross-link with isocyanates, isocyanurates, epoxides, anhydrides or their corresponding polyacids and/or aminoplasts to form a binder having particular properties, to help control the rheology of a coating system. The hyperbranched polyol, the principal resin polyol, or both may, optionally, include a carbamate functional group in the structure thereof. Coating compositions may be made using the binders together with additional components.

Abstract: The present invention relates to a white, biaxially oriented polyester film having at least a base layer, the characterizing features of which are that at least this base layer comprises a cycloolefin copolymer (COC) at a concentration of from 4 to 60% by weight, based on the base layer, where the glass transition temperature of cycloolefin copolymer (COC) is within the range from 70 to 270° C.

Abstract: Thermosetting powder compositions comprising as binder a mixture of polyesters containing carboxyl groups and of a crosslinking agent having functional groups capable of reacting with the carboxyl groups.

Abstract: To provide a thermoplastic polyester resin composition which has a very good durability to alkaline solutions for a long period of time. That is, a thermoplastic polyester resin composition, wherein a thermoplastic polyester resin (A) is compounded with 1-25% by weight (in the total composition) of impact resistance rendering materials (B), 0.1-15% by weight (in the total composition) of a silicone compound and/or a fluorine compound (C), 1-50% by weight (in the total composition) of an inorganic filler (D), and 0.1-10% by weight of at least one polyfunctional compound (E) selected from the group consisting of an epoxy compound, an isocyanate compound and a carboxylic acid dianhydride. A molded article of the present invention has anti-stress properties even in a weld part thereof.

Abstract: The invention concerns composite polyester films with good barrier properties relative to gases. More precisely, it concerns a biaxially drawn film, based on polyester and having improved barrier properties relative to gases, characterised in that it comprises a base polyester film of 5 to 50 &mgr;m, coated on one of its two surfaces with a deposit containing polyvinyl alcohol and a water dispersible copolyester with sulphonyloxy units, said composite film having permeability to oxygen measured at 23° C. under 50% relative humidity, not more than 5 cm3/m2/24 h. Said composite films have, besides being transparent and having barrier properties, excellent resistance to mechanical stresses, such as in particular crumpling.

Abstract: A thermoplastic resin having such a sufficient heat shock resistance that it is unbroken by common temperature changes and also exhibiting an excellent flame resistance when applied to an insert molded article, which is obtained by blending a thermoplastic polyester resin (A) with 1-25% by weight to the total amount of the composition of an impact resistance giving agent (B), 1-50% by weight to the total amount of the composition of an inorganic filler (C), 1-25% by weight to the total amount of the composition of a flame retardant (D) and 0.1-10% by weight to the total amount of the composition of an aromatic polyvalent carboxylate (E).

Abstract: Water-soluble or water-dispersible and curable polyester resins are suitable as binders in various applications, The resins are reaction products of polyterephthalate, polyols, polyacids, end acids and crosslinking agents. The waste terephthalates can be utilized when making the binders of the present invention. The preferred polyol is pentaerythritol. The resins can be used as binder for glass fiber insulation products.

Abstract: A laminated polyester film stretched in at least one direction, comprising:a polyester support, andat least one enhanced adhesion layer laminated on the polyester support, comprising a composition comprising:(1) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a vinylpyrrolidone copolymer resin (C1); or(2) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a polyglycerol polyglycidyl ether (C2); or(3) an aqueous-type polyurethane (A3), a polyvinyl alcohol resin (B3), and inert particles wherein the thickness (L) of the adhesion layer and the average particle diameter (d) of said inert particles satisfies the equation1/3.ltoreq.d/L.ltoreq.3.

Abstract: Compared to a polyester film, films made from a blend of the polyester and up to 20 percent of an ethylene-acrylate copolymer have improved tear strength and heat seal strength while maintaining acceptable gloss, clarity, and coefficient of friction. The heat seal strength of the film and the bond strength of the film to aluminum vacuum deposited on the film are improved by adding less than five percent of an ethylene-acid copolymer to the blend.

Abstract: Yarn that is a blend primarily of a fluoropolymer and, to a lesser extent, of an aromatic dicarboxylic acid polymer; also an industrial fabric, especially a papermaker's fabric.

Abstract: Disclosed is a surface treatment agent for aqueous ink receiving media such as ink jet recording paper, printing sheets, coating materials and so on. The surface treatment agent according to the invention comprises a water-based resin and a carboxylic acid-containing hydrophilic sulfopolyester which provides superior adhesion and water resistance. With the superior adhesion properties, the surface treatment agent can be directly coated on substrates without the inconvenience of primer coating. The surface treatment agent of the invention is suitable for aqueous ink jet printing, coating, or recording media, particularly those of ink jet printers and ink jet plotters.

Abstract: A partially or fully cured thermosetting product which includes a cured and molded product of a thermosetting composition. The composition includes 70% to 99% by weight of at least one thermosetting resin or compound and 1% to 30% by weight of at least one toughening agent. The toughening agent is at least one hyperbranched dendritic macromolecule formed of ester units, optionally in combination with ether units.

Abstract: A hot-melt adhesive composition for coating a sheet-like structure which comprises a hot-melt adhesive powder and a polyethylene wax as processing aid.

Abstract: Thermoplastic molding materials contain, as essential components,A) from 95 to 99.99% by weight of an ethylene polymer andB) from 0.01 to 5% by weight of a thermoplastic polyester having a maximum melting point of less than or equal to 150.degree. C.

Abstract: A polyester film for thermal lamination, comprising:a polyester A of 140.degree. to 245.degree. C. in melting point mainly composed of ethylene terephthalate and/or ethylene isophthalate, a thermoplastic elastomer mixed at a ratio by weight of 81:19 to 98:2 with the elastomer comprising particles having a particle size ratio of 2 to 100 is excellent not only in formability but also in act resistance and taste property, and hence ideal for application on to the inner faces of packages, containers, etc.

Abstract: A filming composition comprises an acryl emulsion having a molecular weight of 1.5.about.2.5 million and a decomposition starting temperature of 200.degree..about.250.degree. C., as a main component. The composition has a tendency to decompose at low temperature and can be completely decomposed and removed during frit sealing, without the need for separate baking or complex equipment. A screen having good characteristics can be obtained through an advantageous method.

Abstract: A melt-processable block copolyesterimide comprising the repeating units (I), (II) and (III) and, optionally, a repeating unit (IV), wherein (I) is a repeating unit of the formula ##STR1## wherein R is an aliphatic polyether chain and/or a polysiloxane chain; (II) and (III) are repeating units of the formulas ##STR2## wherein Z is hydrogen, alkyl, alkoxy, aryl, halogen and w is zero or one; and (IV) is a repeating unit of the formula ##STR3## wherein Z' is hydrogen, alkyl, alkoxy, aryl or halogen and the phenylene ring is substituted in by Z' in the m- or p-positions. The repeating unit of formula (I) is present in an amount of 5 to 50 mole-%, the repeating unit of formula (II) is present in an amount of 10 to 80 mole-%, the repeating unit of formula (III) is present in an mount of 5 to 50 mole-% and the repeating unit of formula (IV) is present in an amount of 0 to 45 mole-% of the block copolyesterimide.

Abstract: A solvent based coating composition containing a binding agent, the binding agent comprising: (a) 10 to 80 wt.% of at least one hydroxyfunctional polyester formed by reacting a mixture comprising: (i) 10 to 40 mol.% of a 2,2-dialkylalkanediol with two primary OH groups; (ii) 10 to 30 mol.% of a polyol with at least one secondary OH group; (iii) 20 to 50 mol.% of an aliphatic or cycloaliphatic dicarboxylic acid with fewer than 16 C atoms or anhydrides thereof; (iv) 5 to 30 mol.% of a compound selected from the group consisting of dimeric fatty acids, dimeric diols, epsilon-caprolactone, and mixtures thereof; (v) 1 to 15 mol.% of a hydroxycarboxylic acid with at least one hydroxy group and at least one carboxyl group; and (b) 10 to 80 wt.% of a (meth)acrylic copolymer containing a hydroxyl group; and (c) 10 to 60 wt.% of a crosslinking agent; wherein the sum of the wt.% of components (a)-(c) is 100% of the binding agent.

Abstract: The invention relates to a process for the production of two-coat finishes, in which a pigmented basecoat is first applied, the resulting basecoat film is coated with a powder clearcoat, and basecoat and clearcoat are subsequently baked together. In accordance with the invention, the powder clearcoat employed is a powder coating which contains an epoxide group-containing polyacrylate resin as binder and a mixture of (A) a polyanhydride and (B) a carboxyl group-containing polyester resin as crosslinking agent. The polyester resin can be prepared by reacting a diol (b1), a compound (b2) which contains per molecule at least three functional groups selected from hydroxyl, primary amino, secondary amino, carboxyl and acid anhydride groups, and (b3) a dicarboxylic acid in a molar ratio of (b1): (b2): (b3)=0.0 to 3.0: 1.0: 1.5 to 9.0 to give a polyester resin having an acid value of 40 to 300.

Abstract: Polyester/elastomer composites are produced by vulcanizing a polyester which contains aliphatic double bonds in the presence of a vulcanizate comprising:I. 100 parts by weight of a rubber,II. 0 to 300 parts by weight of fillers,III. 1 to 10 parts by weight of peroxidic vulcanization agent,IV. 0.5 to 4 parts by weight of vulcanization activators,V. 0 to 150 parts by weight of plasticizer andVI. 0.5 to 10 parts by weight of a silane of the formulaX--R'--Si(OR.sup.2).sub.3wherein X contains an aliphatic double bond or an epoxide group.

Abstract: Coating compositions which comprise:(i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and(ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and(iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; wherein at least one of the compounds (i), (ii), or (iii) comprises a film forming polymer.

Abstract: Copolymers of vinyl aromatic monomers and propoxylated allyl alcohols having an average of 2 or less oxypropylene groups are disclosed. The copolymers, which have hydroxyl numbers of 80-260 mg KOH/g and number average molecular weights from 500-3500, are particularly useful for polyurethanes, alkyd resins and coatings, melamine-based coatings, and unsaturated polyester resins.

Abstract: Compositions are provided which comprise (A) a polyester resin which comprises the reaction product of at least one straight chain, branched, or cycloaliphatic C.sub.2 -C.sub.10 alkane diol or chemical equivalent thereof, and a cycloaliphatic diacid or chemical equivalent thereof; and (B) an effective impact strength or tensile property modifying amount of a substantially amorphous copolymer resin. These compositions are homogeneous and exhibit excellent light stability, chemical resistance, particularly to gasoline and similar automotive chemicals, excellent impact strength even at low temperatures and excellent tensile properties.

Abstract: A powdered thermosetting composition comprising as binder a mixture of a linear carboxyl group-containing polyester and a glycidyl group-containing acrylic copolymer is described. The polyester has an acid number of 20 to 50 mg KOH/g and the acrylic copolymer is obtained from 5% to 30% by weight of glycidyl acrylate or glycidyl methacrylate and 70% to 95% by weight of methyl methacrylate, whereby up to 25% by weight of the methyl methacrylate can be replaced by another vinyl monomer, said acrylic copolymer having a number-average molecular weight (Mn) of from about 4,000 to about 10,000. This composition is particularly useful for the preparation of powdered paints and varnishes which can be applied with an electrostatic spray gun and cured at a temperature of from about 160.degree. to 210.degree. C. to produce matte finishes of excellent quality.

Abstract: Compositions of coreactant resins, such as an epoxy resin, and polyanhydrides that contain non-cyclic anhydride moieties are cured to provide coatings that have good exterior durability. Preferred high molecular weight polyanhydrides contain a central polymer moiety that has no more than about 25 weight percent repeating units derived from unsaturated aliphatic hydrocarbon monomers. In other preferred polyanhydrides, the anhydride moleties are linked to a central moiety by an ester moiety.

Abstract: A styrene-based resin composition containing (A) a styrene-based resin with mainly syndiotactic configuration and (B) a thermoplastic resin other than the styrene-based resin exhibit excellent heat resistance and impact resistance. Optionally, the styrene-based resin composition may further contain (C) a rubber polymer and/or (D) an inorganic filler. More particularly, a composition containing 1-98% by weight (A) 1-98% by weight of a styrene-based resin with mainly syndiotactic configuration and 1-98% by weight (B) a polyethylene terephthalate resin or a polyester resin is disclosed.

Abstract: The present invention relates to thermoformed plastic articles such as frozen food trays which exhibit unexpectedly high impact strength at low temperatures. The articles are obtained from polyester blends containing 88 to 99 weight percent of a poly(ethylene terephthalate) resin and 1 to 12 weight percent of a poly(1,4-cyclohexylenedimethylene terephthalate) resin which contains at least 30 mole percent of 1,4-cyclohexanedimethanol.

Abstract: Lightweight polyester resin molding compositions include a melt-blend of (A) between 97 to 20 parts by weight, based on 100 parts by weight of the total composition weight, of a polyester base resin, (B) between 3 to 80 parts by weight, based on 100 parts by weight of the total composition weight, of a polyolefin resin, (C) between 0.1 to 15 parts by weight, based on 100 parts by weight of the total composition weight, of a compatibilizing compound having a carbon-carbon double bond and an epoxy group in its molecule, (D) between 0.1 to 20% by weight, based on the weight of the compatibilizing compound, of a free radical initiator, and optionally, (E) up to 120 parts by weight, based on 100 parts by weight of the total composition, of a filler material. The free radical initiator is at least one compound having a one-minute half-life temperature of 130.degree. C.

Abstract: A polyester packaging material having a layer formed from a polyester composition as a content contacting layer, wherein the polyester composition comprises 70-95 parts by weight of a polyethylene terephthalate copolymer and 5-30 parts by weight of an ethylene copolymer ionomer. The polyethylene terephthalate copolymer is derived from terephthalic acid (and isophthalic acid, if desired), ethylene glycol and cyclohexanedimethanol (a molar ratio of the ethylene glycol to the cyclohexanedimethanol being within the range of 95/5 to 75/25), and the polyethylene terephthalate copolymer has an endothermic peak of 180.degree. to 240.degree. C. as measured by a differential scanning calorimeter after heated at 130.degree. C. for 5 hours in nitrogen and has an endotherm of 10 to 40 Joule/g at the endothermic peak.

Abstract: This invention relates to a process for preparing aqueous blends of sulfo-polyesters and solid acrylic resins without volatile organic compounds (VOC's) and surfactants. More specifically, the acrylic resins are characterized by an inverse relationship between the molecular weight and acid number of the resin, and the sulfo-polyesters contain at least 12 mole percent of a difunctional sulfomonomer. The aqueous sulfo-polyester/acrylic resin blends of the present invention are useful in inks, overprint varnishes, primers, paints, and coatings.

Abstract: A high temperature copolyester monofilament exhibits enhanced knot tenacity and is formed from the extrusion of a polymer blend of a copolyester resin and a fluoropolymer resin. Additives such as thermal stabilizers may be added to the polymer blend. The polymer blend may be extruded in the presence of other additives such as a hydrolytic stabilizer. The monofilament exhibits a higher average knot tenacity, a higher minimum knot tenacity, a narrower knot tenacity range and lower standard deviation as compared to standard high temperature copolyester monofilaments. A dryer fabric comprises a plurality of woven copolyester monofilaments having enhanced knot tenacity, the monofilaments comprising a polymer blend of copolyester resin and fluoropolymer resin, and may further include thermal stabilizers and hydrolytic stabilizers.

Abstract: The present invention discloses a resin composition containing 26.about.70 weight % of thermoplastic polyester resin, 10.about.30 weight % of polyester elastomer, and 20.about.44 weight % of vinylidene chloride resin and a biaxially stretched heat shrinkable film having cold resistance and oxygen gas barrier property comprising said resin composition, and further a biaxially stretched heat shrinkable laminated film having not only oxygen gas barrier property and cold resistance, but also melt hole resistance, heat resistance sealing property, and transparency after the shrinkage and comprising barrier layer of said resin composition, outer layer (polyamide or crosslinkable polyolefin), inner layer (crosslinkable polyolefin), and heat sealable layer (low crosslinkable polyolefin), at least the outer layer, the inner layer and the heat sealing layer being crosslinked by electron beam irradiation.

Abstract: Disclosed is a plastics composition comprising a thermoplastic blend comprising: (1) 5-95 wt % of a polyamide (PA) and 95-5 wt % of a polyester (PE) incorporating 1-50 wt % of an aliphatic dimer fatty acid, (2) 0.01-30 parts by weight of a compound having at least one ethylenically unsaturated group or propylene group and further having a carboxylic, acid anhydride, acid amide, imido, carboxylic ester, amino or hydroxyl group per 100 parts by weight based on the combined weight of PA and PE, (3) 0-90 parts by weight of a polyester not modified with dimer fatty acid per 100 parts by weight based on the combined weight of PA and PE. Preferably the polyester (PE) is a polyethylene terephthalate or polybutylene terephthalate modified with di-oleic acid. The blends have a greatly improved elongation at break and are readily spinnable.

Abstract: Blends having a high molding fluidity and flowability and high thermoresistance comprising:(a) at least one vinyl-aromatic thermoplastic polymer; and(b) at least one copolyester having a melting point lower than the molding temperature of the thermoplastic polymer (a), and preferably lower than 200.degree. C., a melt viscosity, at 232.degree. C., lower than 50 Pa.S., and obtained from at least one bicarboxylic aromatic acid, at least one aliphatic bicarboxylic acid, and at least one glycol.

Abstract: It is often desirable to increase the modulus of rubbers utilized in a wide variety of applications. This invention discloses a technique for modifying rubbers to improve their modulus without sacrificing other properties. By utilizing the process of this invention, rubber compositions having increased modulus are prepared by grafting polyester onto rubber. This can be accomplished by reacting a polydiene rubber with a thioacid or maleic anhydride and subsequently with the polyester. It is also possible to prepare such polyester modified rubber compositions by reacting an epoxidized rubber with the polyester.

Abstract: A polyester is provided which facilitates the separation of blood into light and heavy phases via centrifugation in a blood collection vessel. The polyester 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 polyester of the invention provides a particular advantage in blood collection vessels used in therapeutic drug monitoring, due to the relatively low affinity between the polyester component of the composition and commonly monitored classes of drugs.

Abstract: Hot melt adhesive compositions comprising:(a) 40%-90% by weight of a copolyester having a melting temperature lower than 150.degree. C., obtained from an aromatic dicarboxylic acid, an aliphatic dicarboxylic acid, and a glycol;(b) 5%-55% by weight of an elastomer based on a thermoplastic segmented copolyester having a melting temperature of at least 100.degree. C., and containing recurring units deriving from polyetherglycol; and(c) 5%-55% by weight of a natural or synthetic thermoplastic resin having a Brookfield viscosity, at 180.degree. C., lower than 25,000 cps.