The present disclosure provides a preparation method of a shape memory polyurethane, which comprising: reacting 1,3,5,7-tetrahydroxyadamantane, ε-caprolactone, a catalyst and a solvent for 20-50 hours under the conditions of inert gas and 70° C. to 130° C. to obtain adamantyl star poly(ε-caprolactone), wherein the mole ratio of the 1,3,5,7-tetrahydroxyadamantane to the ε-caprolactone is 1:(40-240); mixing the adamantyl star poly(ε-caprolactone) with long-chain diol and diisocyanate, adding the catalyst and the solvent, and reacting for 3-9 hours at 50-100° C. to obtain an isocyanate-terminated polyurethane prepolymer, wherein the mass ratio of the adamantyl star poly(ε-caprolactone) to the long-chain diol is 9:1-1:9; and adding a linking agent in the polyurethane prepolymer so that the linking agent reacts with isocyanate in the polyurethane prepolymer to obtain an adamantyl cross-linked shape memory polyurethane.

A composition comprised of a component selected from the group consisting of a biobased bis-alkyl succinate and a biobased bis-alkyl sebacate, each derived, for example, from the esterification of biobased diacid such as succinic acid or sebacic acid, and a biobased alcohol and a biobased polyester.

The present invention provides alternative polyurethane composition comprising the reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer, wherein the poly(alkynyl carbamate) prepolymer comprises the reaction product of a polyisocyanate, an alkynol, and an oxysilane. The reaction of the polyol and the prepolymer may occur in the presence of a catalyst or at a temperature of from 20° C. to 120° C. The inventive oxysilane and azido-alkyne hybrid click formulations provide comparable performance, and in some cases better performance, to/than urethane and azido-alkyne control click formulations in terms of pencil hardness, MEK double rubs, and glass transition temperature. The inventive alternative polyurethane compositions may be used to provide coatings, adhesives, sealants, films, elastomers, castings, and composites.

A self-supporting multifunctional film is provided based on natural poly-phenols such as tannic acid. The self-supporting film composition of the invention contains a tannic acid derivative in which 12% to 24% of hydroxyl groups in tannic acid are bonded via urethane bonds that are formed by way of reactions with cyanate groups. Preferably, the film composition further includes a precursor polymer and 45 to 65% by mass of tannic acid and 55 to 35% by mass of the precursor polymer. Preferably, the precursor polymer has a second linear hydrocarbon compound urethane-bonded to both ends of a first linear hydrocarbon compound, and more preferably a diisocyanate group having an oligoethyene glycol as a spacer. Preferably, the ratio of the urethane bonds contained in the precursor polymer to the hydroxyl groups contained in the tannic acid is (12:88) to (24:76) inclusive in terms of molar ratio.

According to the present invention, it is possible to provide a composition comprising a resin component and a filler component comprising a filler having a specific gravity of 3 or more and a filler having a specific gravity of less than 3, which achieves a low specific gravity effect in a state where a filler is filled in a high content and in a state where realization of physical properties is sufficiently secured, and has improved storage stability without deterioration of physical properties such as a thermal conductivity, and a product comprising a heating element and the composition or a cured product thereof in thermal contact with the heating element.

A method for making an aromatic polyester polyol compound, wherein the method comprises reacting at esterification reaction conditions a reactive mixture comprising the following components: (i) an aromatic acid compound; (ii) an aliphatic diol compound; (iii) a dialkylol alkanoic acid compound; (iv) optionally, a hydrophobic compound, a polyhydroxy compound comprising at least three hydroxyl groups, or combinations thereof, and wherein the aromatic polyester polyol compound is liquid at 25 C. and has a hydroxy value ranging from about 30 to about 600.

The invention relates to a method for producing a biomass-resource-derived polyurethane, which comprises: reacting a dicarboxylic acid and an aliphatic diol to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, wherein the dicarboxylic acid contains at least one component derived from biomass resources, a content of an organic acid in the dicarboxylic acid is more than 0 ppm and not more than 1,000 ppm relative to the dicarboxylic acid, and a pKa value of the organic acid at 25 C. is not more than 3.7.

Provided is a flexible package laminate print ink composition including a pigment, a binder resin, and an organic solvent. The binder resin includes polyurethane resin including a biomass polyurethane resin obtained by a reaction of a biopolyester polyol component and an organic diisocyanate component, and includes, at a terminal thereof, a primary or secondary amino group. The biopolyester polyol component includes a dicarboxylic acid, a certain amount of organic acid having three or more active hydrogen groups, each having a certain molecular weight, and diol. At least one of the dicarboxylic acid and the diol is plant-derived, and has NCO group/OH group=1.2 to 3.0. A content of the biomass polyurethane resin in the polyurethane resin is 5 mass % to 100 mass %.

A self-supporting multifunctional film is provided based on natural poly-phenols such as tannic acid. The self-supporting film composition of the invention contains a tannic acid derivative in which 12% to 24% of hydroxyl groups in tannic acid are bonded via urethane bonds that are formed by way of reactions with cyanate groups. Preferably, the film composition further includes a precursor polymer and 45 to 65% by mass of tannic acid and 55 to 35% by mass of the precursor polymer. Preferably, the precursor polymer has a second linear hydrocarbon compound urethane-bonded to both ends of a first linear hydrocarbon compound, and more preferably a diisocyanate group having an oligoethyene glycol as a spacer. Preferably, the ratio of the urethane bonds contained in the precursor polymer to the hydroxyl groups contained in the tannic acid is (12:88) to (24:76) inclusive in terms of molar ratio.

The present disclosure provides a preparation method of a shape memory polyurethane, which comprising: reacting 1,3,5,7-tetrahydroxyadamantane, -caprolactone, a catalyst and a solvent for 20-50 hours under the conditions of inert gas and 70 C. to 130 C. to obtain adamantyl star poly(-caprolactone), wherein the mole ratio of the 1,3,5,7-tetrahydroxyadamantane to the -caprolactone is 1:(40-240); mixing the adamantyl star poly(-caprolactone) with long-chain diol and diisocyanate, adding the catalyst and the solvent, and reacting for 3-9 hours at 50-100 C. to obtain an isocyanate-terminated polyurethane prepolymer, wherein the mass ratio of the adamantyl star poly(-caprolactone) to the long-chain diol is 9:1-1:9; and adding a linking agent in the polyurethane prepolymer so that the linking agent reacts with isocyanate in the polyurethane prepolymer to obtain an adamantyl cross-linked shape memory polyurethane.