A solvent-less hybrid curable composition is prepared from grafting polyesters or polyamides onto a (meth)acrylic copolymer backbone. Besides the many benefits of a solvent-less system, the hybrid curable composition forms strong adhesion to polar substrates, widens the use temperatures, and enables faster processing speeds than conventional hybrid curable compositions. The solvent-less hybrid curable composition forms an optically clear single phase that is suitable as tapes and labels, or in electronic, optoelectronic, OLED and photovoltaic devices, and the like.

The present invention relates to curable photochromic compositions which include an at least di-functional oxazoline functional material, an at least di-functional first carboxylic acid functional material, an optional second carboxylic acid functional material having at least three carboxylic acid groups, which optionally includes a carboxylic acid functional polymer, and a photochromic compound. The curable photochromic compositions have an equivalents ratio of oxazoline equivalents of the oxazoline functional material to a total carboxylic acid equivalents of the first and optional second carboxylic acid functional materials of from 0.5:1 to 10:1 when the second carboxylic acid functional material is not present, and from 0.5:1 to 3:1 when the second carboxylic acid functional material is present. The present invention, more particularly, relates to curable photochromic adhesive compositions, and curable photochromic coating compositions.

The present invention relates to curable photochromic compositions which include an at least di-functional oxazoline functional material, an at least di-functional first carboxylic acid functional material, an optional second carboxylic acid functional material having at least three carboxylic acid groups, which optionally includes a carboxylic acid functional polymer, and a photochromic compound. The curable photochromic compositions have an equivalents ratio of oxazoline equivalents of the oxazoline functional material to a total carboxylic acid equivalents of the first and optional second carboxylic acid functional materials of from 0.5:1 to 10:1 when the second carboxylic acid functional material is not present, and from 0.5:1 to 3:1 when the second carboxylic acid functional material is present. The present invention, more particularly, relates to curable photochromic adhesive compositions, and curable photochromic coating compositions.

The present invention relates to curable photochromic compositions which include an at least di-functional oxazoline functional material, an at least di-functional first carboxylic acid functional material, an optional second carboxylic acid functional material having at least three carboxylic acid groups, which optionally includes a carboxylic acid functional polymer, and a photochromic compound. The curable photochromic compositions have an equivalents ratio of oxazoline equivalents of the oxazoline functional material to a total carboxylic acid equivalents of the first and optional second carboxylic acid functional materials of from 0.5:1 to 10:1 when the second carboxylic acid functional material is not present, and from 0.5:1 to 3:1 when the second carboxylic acid functional material is present. The present invention, more particularly, relates to curable photochromic adhesive compositions, and curable photochromic coating compositions.

The present invention provides an aromatic polyester having several operative functional groups and a method for producing same. An aromatic polyester comprising a polycarboxylic acid component and a polyhydric alcohol component as a copolymerization component, wherein the aromatic polyester comprises a polycarboxylic acid component having an operative functional group by 50 mol % or more when a total amount of the polycarboxylic acid component is taken as 100 mol %, and the aromatic polyester comprises an aromatic polyhydric alcohol component by 50 mol % or more when a total amount of the polyhydric alcohol component is taken as 100 mol %.

The present invention provides an aromatic polyester having several operative functional groups and a method for producing same. An aromatic polyester comprising a polycarboxylic acid component and a polyhydric alcohol component as a copolymerization component, wherein the aromatic polyester comprises a polycarboxylic acid component having an operative functional group by 50 mol % or more when a total amount of the polycarboxylic acid component is taken as 100 mol %, and the aromatic polyester comprises an aromatic polyhydric alcohol component by 50 mol % or more when a total amount of the polyhydric alcohol component is taken as 100 mol %.

An object of an embodiment of the present invention is to provide a biodegradable polyester solution that exhibits good solubility in a halogen-free organic solvent and that has sufficient adhesive strength even when aged for a short time. The object is achieved by providing a biodegradable polyester solution containing a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) copolymer and a solvent, the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) copolymer having an average content of 16 mol % or more 3-hydroxyhexanoate.

An object of an embodiment of the present invention is to provide a biodegradable polyester solution that exhibits good solubility in a halogen-free organic solvent and that has sufficient adhesive strength even when aged for a short time. The object is achieved by providing a biodegradable polyester solution containing a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) copolymer and a solvent, the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) copolymer having an average content of 16 mol % or more 3-hydroxyhexanoate.

The present disclosure provides a heat sealing aqueous resin composition containing: a rosin resin (A); a biodegradable resin (B) including a resin having a structure of General Formula (1) and/or a resin (b1) having a structure of General Formula (2); and a polyvinyl alcohol (C) in which an average saponification degree is 75 mol % or more and 85 mol % or less, in which a content of the component (b1) is more than 50% by mass when a total content of the component (A) and the component (B) is 100% by mass.

—O—(CH.sub.2).sub.x—O—CO—(CH.sub.2).sub.y—CO—  General Formula (1): (in General Formula (1), x and y may be different from each other, and are integers of 1 or more and 10 or less)

—O—(CH.sub.2).sub.z—CO—  General Formula (2): (in General Formula (2), z is an integer of 3 or more and 10 or less)

The present disclosure provides a heat sealing aqueous resin composition containing: a rosin resin (A); a biodegradable resin (B) including a resin having a structure of General Formula (1) and/or a resin (b1) having a structure of General Formula (2); and a polyvinyl alcohol (C) in which an average saponification degree is 75 mol % or more and 85 mol % or less, in which a content of the component (b1) is more than 50% by mass when a total content of the component (A) and the component (B) is 100% by mass.

—O—(CH.sub.2).sub.x—O—CO—(CH.sub.2).sub.y—CO—  General Formula (1): (in General Formula (1), x and y may be different from each other, and are integers of 1 or more and 10 or less)

—O—(CH.sub.2).sub.z—CO—  General Formula (2): (in General Formula (2), z is an integer of 3 or more and 10 or less)