The present invention relates to a dispersant having a tertiary or quaternary amine anchoring group and a solubilizing polymer selected from C.sub.8-50 fatty acid; a C.sub.8-50 ak(en)yl substituted succinic acid, anhydride or partial ester; a dimer or trimer fatty acid; and/or polymers from repeating units of polyesters, polyethers, polyacrylate, polyamides, polyurethanes or mixtures of said repeating units in a random or blocky copolymer. The dispersants are an improvement in that the alkylene connecting group between the tertiary or quaternized amine and the solubilizing polymer lacks abstractable hydrogen atoms at the geminal carbon atom from the nitrogen of the tertiary or quaternized amine over the prior art. The dispersants are useful as dispersants with improved thermal stability and low amounts yellow color after aging at elevated temperatures.

The invention relates to a composition for preparing a flexible foam and its application. The composition comprises the following components: a. an isocyanate mixture; b. a polymer polyol mixture; c. an isocyanate-reactive group-containing compound having a number average molecular weight of 32-400 g/mol; d. an aqueous alkali metal salt and/or ammonium bicarbonate solution, having a concentration of greater than or equal to 1.5 wt % and less than 30 wt %, and a pH value of less than 9.5; and e. a metal catalyst; wherein the amount of the tertiary amine catalyst in the composition is not more than 0.1 wt %, and the isocyanate index of the composition is 70-120. The composition has a high reaction efficiency and can meet the quantitative production requirements of the textile industry. The flexible foam prepared from the composition has a good phenolic yellowing resistance, and can meet the comprehensive requirements of the textile industry for a high rebound resilience, a good gas permeability, a ultraviolet yellowing resistance and the like of the foam.

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.

The present invention relates to a porous membrane, process for the manufacture thereof and uses thereof.

This invention generally provides composition for making a polyurethane foam with reduced aldehyde emission and more specially to composition useful in means of transport such as interior part of cars, wherein composition is comprising: (a) a polyfunctional isocyanate; (b) an isocyanate reactive composition; and (c) a compound of the formula (I) or (II), wherein the compound (c) is present by weight percentage in the composition in an amount ranging from about 0.001 to about 10, preferably from about 0.01 to about 5, and more preferably from about 0.05 to about 2 based on the total weight of the composition. The compositions can reduce aldehyde emission, especially acetaldehyde emission in the PU foam and has no obvious influence on the mechanic properties of the foam.

A prepolymer of elastomer material for screw drilling tools and a preparation method thereof are provided. The prepolymer includes component A and component B, wherein the component A includes hydroxyl-terminated liquid rubber, polytetrahydrofuran diol, and polyether polyol; the component B includes at least one of an isocyanate, a cyanate, and a cyano compound; the mass ratio of the hydroxyl-terminated liquid rubber, polytetrahydrofuran diol, and polyether polyol is (0.2-1.0): (0.2-1.0): (0.2-1.0). Different molecular segments of different proportions are introduced through structural design, such that the molecular structure of the prepolymer has both rigid and flexible segments, thus to achieve an adjustable and controllable structure of the prepolymer; and the introduction of active groups makes the prepolymer to show good reactivity and processability. Therefore, a reactive elastomer material having excellent properties such as hardness, tear strength, and tensile strength can be obtained used as an elastomer material for screw drilling tools.

The present invention provides multilayer coated substrates, prepared using primer and/or sealer compositions comprising waterborne curable film-forming compositions, in turn comprising: a) an aqueous dispersion of a pigment and i) polymeric urethane-shell particles having a care-shell morphology and having hydroxyl functional groups, wherein the core is prepared from a monomer mixture comprising hydrophobic, ethylenically unsaturated monomers and the shell comprises a polyurethane or polyurethane-urea polymer; or ii) polymeric acrylic-shell particles having a core-shell morphology and having hydroxyl functional groups, wherein the core is prepared from a monomer mixture comprising hydrophobic, ethylenically unsaturated monomers and the shell is prepared from a monomer mixture comprising hydrophilic, ethylenically unsaturated monomers; b) a polyisocyanate crosslinking agent; and optionally c) a hydroxyl functional, water dispersible acrylic polymer.

A polyurethane foam is produced by reacting a polyol-containing composition and an isocyanate composition. The polyol-containing composition includes a petrol-based polyol at greater than or equal to about 50 parts by weight percent and cellulose reinforcements. Additionally, a soy-based polyol is also included in various polyol-containing compositions.

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.