A polyester-based pressure-sensitive adhesive composition which can be produced even from plant-derived raw materials with no need of using a costly silicone-based pressure-sensitive adhesive or the like and which is usable for producing a pressure-sensitive adhesive sheet excellent in wettability to an adherend, light peelability (removability), anti-staining property (little adhesive residues), and workability, and to provide a pressure-sensitive adhesive sheet using the composition. A polyester-based pressure-sensitive adhesive composition comprising a polyester obtained by condensation polymerization of at least a carboxylic acid component and a diol component, and a crosslinking agent, wherein the carboxylic acid component contains a dicarboxylic acid having a side chain in an amount of 50 to 90% by weight and a tricarboxylic acid having a side chain in an amount of 10 to 50% by weight, and wherein the polyester has a weight average molecular weight of 5000 to 150000.

A polyester-based pressure-sensitive adhesive composition which can be produced even from plant-derived raw materials with no need of using a costly silicone-based pressure-sensitive adhesive or the like and which is usable for producing a pressure-sensitive adhesive sheet excellent in wettability to an adherend, light peelability (removability), anti-staining property (little adhesive residues), and workability, and to provide a pressure-sensitive adhesive sheet using the composition. A polyester-based pressure-sensitive adhesive composition comprising a polyester obtained by condensation polymerization of at least a carboxylic acid component and a diol component, and a crosslinking agent, wherein the carboxylic acid component contains a dicarboxylic acid having a side chain in an amount of 50 to 90% by weight and a tricarboxylic acid having a side chain in an amount of 10 to 50% by weight, and wherein the polyester has a weight average molecular weight of 5000 to 150000.

A polyester-based pressure-sensitive adhesive composition comprises a polyester obtained by condensation polymerization of at least a dicarboxylic acid having a side chain and a diol, a polyether polyol, and a crosslinking agent, wherein the polyester has a weight average molecular weight of 5000 to 50000, the polyether polyol contains a polyether polyol having hydroxyl groups at only part of terminals and/or all terminals, the polyether polyol having hydroxyl groups at only part of terminals has a number average molecular weight of 100 to 1500, and the polyether polyol having hydroxyl groups at only part of terminals is contained in an amount of 1 to 35 parts by weight based on 100 parts by weight of the polyester.

One embodiment is a pressure sensitive adhesive construct comprising: (a) a backing substrate; and (b) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from (i) at least one epoxidized vegetable oil and; (ii) a dimer acid or anhydride thereof, a trimer acid or anhydride thereof, a polymerized fatty acid or anhydride thereof, or a mixture thereof. A further embodiment is a pressure sensitive adhesive construct comprising: (A) a backing substrate; and (B) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from (i) at least one epoxidized vegetable oil and; (ii) a prepolymer or oligomer capped with a carboxylic acid group at both prepolymer or oligomer chain ends, or a branched prepolymer or oligomer with at least two of the prepolymer or oligomer branches and chain ends capped with a carboxylic acid group, wherein the carboxylic acid-capped prepolymer or oligomer is made from (a) a dibasic acid reacted with (b) a glycidyl or an epoxidized compound having at least two epoxy groups, a diol or polyol, a diamine, or a combination thereof.

One embodiment is a pressure sensitive adhesive construct comprising: (a) a backing substrate; and (b) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from (i) at least one epoxidized vegetable oil and; (ii) a dimer acid or anhydride thereof, a trimer acid or anhydride thereof, a polymerized fatty acid or anhydride thereof, or a mixture thereof. A further embodiment is a pressure sensitive adhesive construct comprising: (A) a backing substrate; and (B) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from (i) at least one epoxidized vegetable oil and; (ii) a prepolymer or oligomer capped with a carboxylic acid group at both prepolymer or oligomer chain ends, or a branched prepolymer or oligomer with at least two of the prepolymer or oligomer branches and chain ends capped with a carboxylic acid group, wherein the carboxylic acid-capped prepolymer or oligomer is made from (a) a dibasic acid reacted with (b) a glycidyl or an epoxidized compound having at least two epoxy groups, a diol or polyol, a diamine, or a combination thereof.

The present application relates to polyurethane polymers produced by polymerizing a reactant mixture comprising triglycerides of Physaria fendleri, one or more polyisocyanates, and one or more polyols, wherein the triglycerides of Physaria fendleri have a hydroxyl value ranging from 90 milligrams of potassium hydroxide per gram of the triglycerides of Physaria fendleri to 250 milligrams of potassium hydroxide per gram of the triglycerides of Physaria fendleri. The present application also relates to polyester polymers produced by polymerizing a reactant mixture comprising triglycerides of Euphorbia lagascae, and one or more dicarboxylic acids. Also disclosed are the methods of formation of the polyurethane and polyester polymers, and their use as adhesives.

The present application relates to polyurethane polymers produced by polymerizing a reactant mixture comprising triglycerides of Physaria fendleri, one or more polyisocyanates, and one or more polyols, wherein the triglycerides of Physaria fendleri have a hydroxyl value ranging from 90 milligrams of potassium hydroxide per gram of the triglycerides of Physaria fendleri to 250 milligrams of potassium hydroxide per gram of the triglycerides of Physaria fendleri. The present application also relates to polyester polymers produced by polymerizing a reactant mixture comprising triglycerides of Euphorbia lagascae, and one or more dicarboxylic acids. Also disclosed are the methods of formation of the polyurethane and polyester polymers, and their use as adhesives.

The present invention relates to an alkyd emulsion comprising an alkyd resin based on a conjugated fatty acid and also a reactive surfactant. The invention also covers a process for the preparation of the alkyd emulsion and its use in decorative coatings. The coating obtained with this alkyd emulsion exhibits improved performance qualities in terms of water resistance and of hardness development.

The present invention relates to an alkyd emulsion comprising an alkyd resin based on a conjugated fatty acid and also a reactive surfactant. The invention also covers a process for the preparation of the alkyd emulsion and its use in decorative coatings. The coating obtained with this alkyd emulsion exhibits improved performance qualities in terms of water resistance and of hardness development.

A method and a kit for rejuvenating shingles of a roof is disclosed. The method comprises: applying a first composition on an outer surface of said shingles for softening and making them flexible; coating the first composition with a second composition; and applying over the second composition a third composition configured to mechanically reinforce the softened flexible roof shingles. The second composition is configured to provide adhesion between the first and third composition. The rejuvenated asphalt shingles according to the present invention show similar impact resistance, lower granule loss, resistance against wind, and no adverse impact by fungi compared to new/original shingles. The method and kit as described herein allows rejuvenating the shingles, saving as such time and important costs compared to the entire replacement of the old shingles by new ones.