Disclosed is a sealant film including at least a layer formed of a polyester as a superficial layer, in which the polyester contains 20 to 50 mol % of a 2,5-furandicarboxylic acid unit, 18 to 49.5 mol % of at least one diol unit selected from the group consisting of an ethylene glycol unit, a 1,3-propanediol unit, and a 1,4-butanediol unit, and 0.5 to 2.5 mol % of a diethylene glycol unit, the sealant film has a crystallinity of less than 14%, and the sealant film is a stretched film that exhibits a shrinkage ratio of 6% or more in a maximum shrinkage direction upon being allowed to stand at 125° C. for 20 seconds. This provides a sealant film superior in mechanical properties, especially tensile elongation, and also superior in heat sealability, non-adsorptivity, and gas barrier properties.

An alkyd polymer composition for fast-drying, low VOC applications is provided. The alkyd polymer incorporates a minimum required level of a cyclic ether- and hydroxyl-containing composition formed from a sugar alcohol during the alcoholysis step while synthesizing the alkyd polymer. The disclosure also relates to the cyclic ether- and hydroxyl-containing composition which must have a minimum required level of cyclic ether structure incorporated therein in order to produce a sufficiently fast-drying alkyd polymer. Methods of making the cyclic ether- and hydroxyl-containing composition and the alkyd polymer comprising, as polymerized units, the cyclic ether- and hydroxyl-containing composition and a poly acid and/or an anhydride compound, as well as an optional polyol, other than the sugar alcohol, are also provided. Also provided is a 13 C NMR method of characterizing the necessary minimum required level of cyclic ether ring structure in the cyclic ether- and hydroxyl-containing composition and the alkyd polymer formed therefrom.

An alkyd polymer composition for use in low volatile organic compound (VOC) containing products that exhibits a Gardner-Holdt viscosity with 30 weight % mineral spirits at 25° C. that is less than or equal to Z4, a thy-hard time of less than 10 hours when tested with metal driers according to ASTM D 1640-03, and a clear appearance. The alkyd polymer composition includes, as polymerized units an alkyd polymer of one or more fatty acids; a sugar alcohol having at least 6 carbon atoms; a polyol with four or more hydroxyl functional groups; and an aromatic polyacid with two carboxylic acid groups located in a meta-position relative to one another. The alkyd polymer composition includes at least one aliphatic oxide ring having one or more peaks located between 75 to 90 ppm as measured using C.sup.13 Nuclear Magnetic Resonance (NMR) spectroscopy.

The present invention provides a sealing resin composition containing a polyester resin (A), carbodiimide (B) and an antioxidant (C).

The present invention aims to provide a crystalline polyester resin which satisfies both of a high melting point and a high fluidity, and a flame-retardant sealing resin composition using the same. A crystalline polyester resin (A) containing polycarboxylic acid components and polyhydric alcohol components as copolymerizing components, characterized in that a copolymerizing rate of a 2,6-naphthalenedicarboxylic acid component is from 40 to 100 molar % when a total of the polycarboxylic acid components in the crystalline polyester resin (A) is taken as 100 molar %, that a 1,4-butanediol component is copolymerized as a polyhydric alcohol component, and that a copolymerizing rate of the 1,4-butanediol component is 40 molar % or less when a total of the polyhydric alcohol components is taken as 100 molar %.

Provided is a sealing material for multi-layered glasses, including: a polysulfide resin (A) and a polyester resin (B) which is represented by Formula (1-1): ##STR00001##
or Formula (1-2): ##STR00002##
wherein A represents a dibasic acid residue, G represents a diol residue, X.sub.1 and X.sub.2 represent a hydrogen atom or a group represented by Formula (2-1): ##STR00003## wherein R represents an aromatic group or an aliphatic group, and X.sub.3 and X.sub.4 represent an aromatic group or an aliphatic group, n and m each represent the average number of repetitions of a repeating unit in parentheses and are each a numerical value larger than 0, and some or all A's are aromatic dibasic acid residues, and which has an aromatic dibasic acid residue content of 20 to 70% based on chemical formula weights calculated from the chemical formulae represented by [ ].sub.N and [ ].sub.M and also has a number average molecular weight of 400 to 5,000.

The present invention aims to provide a crystalline polyester resin which satisfies both of a high melting point and a high fluidity, and a flame-retardant sealing resin composition using the same. A crystalline polyester resin (A) containing polycarboxylic acid components and polyhydric alcohol components as copolymerizing components, characterized in that a copolymerizing rate of a 2,6-naphthalenedicarboxylic acid component is from 40 to 100 molar % when a total of the polycarboxylic acid components in the crystalline polyester resin (A) is taken as 100 molar %, that a 1,4-butanediol component is copolymerized as a polyhydric alcohol component, and that a copolymerizing rate of the 1,4-butanediol component is 40 molar % or less when a total of the polyhydric alcohol components is taken as 100 molar %.

The present invention relates to amorphous polyesters on the basis of betulin, a method for producing them and their use.

An alkyd polymer composition for use in low volatile organic compound (VOC) containing products that exhibits a Gardner-Holt viscosity with 30 weight % mineral spirits at 25 C. that is less than or equal to Z4, a thy-hard time of less than 10 hours when tested with metal driers according to ASTM D 1640-03, and a clear appearance. The alkyd polymer composition includes, as polymerized units an alkyd polymer of one or more fatty acids; a sugar alcohol having at least 6 carbon atoms; a polyol with four or more hydroxyl functional groups; and an aromatic polyacid with two carboxylic acid groups located in a meta-position relative to one another. The alkyd polymer composition includes at least one aliphatic oxide ring having one or more peaks located between 75 to 90 ppm as measured using C.sup.13 Nuclear Magnetic Resonance (NMR) spectroscopy.

The present invention provides a sealing resin composition containing a polyester resin (A), carbodiimide (B) and an antioxidant (C).