A water repellent composition includes a polyurethane resin compound, a non-fluorine water repellent compound, a surfactant, and a liquid medium. The polyurethane resin compound includes at least one kind selected from the group consisting of a first polyurethane resin compound, a second polyurethane resin compound, and a third polyurethane resin compound:

A water repellent composition includes a polyurethane resin compound, a non-fluorine water repellent compound, a surfactant, and a liquid medium. The polyurethane resin compound includes at least one kind selected from the group consisting of a first polyurethane resin compound, a second polyurethane resin compound, and a third polyurethane resin compound:

A structural flame retardant high strength low exothermic polymer grouting material for consolidating, belonging to a technical field of polyurethane material, is produced by combined the polyether polyol and the modified isocyanate in a weight ratio of 100:(100-160), leading to internal reaction temperature ≤100° C., strength ≥60 mPa, bonding ≥3 mPa, oxygen index ≥28% while no halogen and no effect on water quality, odor level (80° C.) ≤3.5, and fog test ≤5 mg (which means no physical additive flame retardant is diffused into the environment). In particular, with no halogen, which is known as environmental hormones, in the plasticizers, there will be less combustion smoke, wherein the present invention will not release corrosive or irritating hydrogen halide gas, nor produce toxic carcinogens polybrominated benzoxins and polybrominated dibenzofurans, thereby avoiding the long-term impact of the material on the environment.

A structural flame retardant high strength low exothermic polymer grouting material for consolidating, belonging to a technical field of polyurethane material, is produced by combined the polyether polyol and the modified isocyanate in a weight ratio of 100:(100-160), leading to internal reaction temperature ≤100° C., strength ≥60 mPa, bonding ≥3 mPa, oxygen index ≥28% while no halogen and no effect on water quality, odor level (80° C.) ≤3.5, and fog test ≤5 mg (which means no physical additive flame retardant is diffused into the environment). In particular, with no halogen, which is known as environmental hormones, in the plasticizers, there will be less combustion smoke, wherein the present invention will not release corrosive or irritating hydrogen halide gas, nor produce toxic carcinogens polybrominated benzoxins and polybrominated dibenzofurans, thereby avoiding the long-term impact of the material on the environment.

This application relates to flame-retardant coatings, and more particularly to an aminated phosphorene-based flame-retardant waterborne polyurethane coating and a preparation method thereof. The aminated phosphorene-based flame-retardant waterborne polyurethane coating is prepared from a diisocyanate-terminated prepolymer, a neutralizer and an aminated phosphorene, where the diisocyanate-terminated prepolymer is prepared from polymeric diol with water-dispersible groups, aliphatic diisocyanate and carboxylic acid type hydrophilic diol under the catalysis of a catalyst for synthesizing waterborne polyurethane.

This application relates to flame-retardant coatings, and more particularly to an aminated phosphorene-based flame-retardant waterborne polyurethane coating and a preparation method thereof. The aminated phosphorene-based flame-retardant waterborne polyurethane coating is prepared from a diisocyanate-terminated prepolymer, a neutralizer and an aminated phosphorene, where the diisocyanate-terminated prepolymer is prepared from polymeric diol with water-dispersible groups, aliphatic diisocyanate and carboxylic acid type hydrophilic diol under the catalysis of a catalyst for synthesizing waterborne polyurethane.

An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.

An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.

An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.

A resin composition useful for additive manufacturing is provided, which resin composition may exhibit improved shelf life through inhibition of crystallization. Such resin composition may include a crystallization inhibitor as taught herein, and/or a prepolymer produced by reaction of an isocyanate with multiple isomers and comprising a lower percentage of the structurally symmetric isomer. Methods of forming a three-dimensional object using such resin composition are also provided.