Methods are provided for producing bio-oil polyols, alkoxylating bio-oil polyols to provide polyols, and for employing the alkoxylated bio-oil polyols for making polymers or copolymers of polyesters or polyurethanes.

Methods are provided for producing bio-oil polyols, alkoxylating bio-oil polyols to provide polyols, and for employing the alkoxylated bio-oil polyols for making polymers or copolymers of polyesters or polyurethanes.

Provided are an emulsifiable isocyanate composition and a preparation method therefor. The emulsifiable isocyanate composition comprises the following components: (a) a polymethylene polyphenyl polyisocyanate, (b) an emulsifier, (c) an adduct derived from a diisocyanate, and optionally (d) a terpene monomer. The emulsifiable isocyanate composition is used in artificial board adhesives, and has a smaller mold cumulative effect, an improved demoulding performance and an extended pot life.

Described herein is a two-component polyurethane adhesive that exhibits a glass transition temperature (Tg) of 70 C. and an open time in the range of 45 to 90 minutes at a temperature of 70 C. and a relative humidity of 50%. Also described is a method of producing the two-component polyurethane adhesive having a long open time with good humidity tolerance which is suitable for bonding large and bulky components or surfaces, including but not limited to, rotor blades of wind turbines.

Provided herein is a process for producing fiber composite materials which includes mixing an isocyanate component A and a polyol component B to afford a reaction mixture, impregnating fibers with the reaction mixture and the curing the impregnated fibers, wherein the polyol component B includes the alkoxylation product of a mixture of fat-based alcohol (i) and at least one OH-functional compound having aliphatically bonded OH groups and an OH functionality of 2 to 4 which is not a fat-based alcohol (ii). The present compound further relates to a fiber composite material obtainable by such a process and using the fiber composite material as a mast.

The invention discloses an antibacterial mildewproof polyurethane composite material containing natural plant and a preparing method thereof. The composite material comprises component A and component B with a ratio of component A and component B being 100:(20-50) by weight. The component A by weight comprises: 30-60 parts plant oil polyether polyols; 20-50 parts polyether polyols I; 5-20 parts polyether polyols II; 5-20 parts composite plant extract; 0-0.5 parts catalyst; 0.5-2 parts surfactant; 0-2 parts cross-linking agent; 1.5-3 parts foaming agents. The component B by weight comprising 20-50 parts modified MDI. The composite material made according to the preparation method of the invention shows a good stability and the polyurethane products made according to the preparation method is degradable. The antibacterial mildewproof natural plant adopted by the composite material in the invention enables the composite material to prevent the bacteria breeding effectively and provides environmental protection.

The present invention relates to a two-component putty comprising (1) a base component and (2) a curing component, wherein the base component comprises: castor oil as resin component; and a further resin component having a hydroxyl number in the range of from 00 to 800 mg KOH/g, wherein the curing component comprises a polyisocyanate, and wherein the two-component putty further comprises hollow microspheres and an organically modified inorganic filler. The present invention also relates to a method for coating a substrate by applying such putty and allowing the applied putty to cure. The invention further relates to a coated substrate obtainable by such method.

Embodiments described herein provide a coating composition including an aqueous acrylic/polyurethane dispersion. The aqueous acrylic/polyurethane dispersion is produced from at least one isocyanate component, a polyol mixture, and at least one acrylate solvent. The polyol mixture includes a polyester polyol and at least two different oleo-based polyols. The coating composition exhibits improved chemical resistance without sacrificing other properties, such as hardness and abrasion resistance.

A preparation method of a flexible polyurethane foam includes the following steps of: (1) subjecting an epoxidized vegetable oil, a benzoylformic acid, a basic catalyst, and an inert solvent to a ring-opening reaction in a first microchannel reactor of a microchannel reaction device to obtain a vegetable oil polyol; (2) subjecting the vegetable oil polyol obtained in the step (1), a propylene oxide and an inert solvent to an addition polymerization reaction in a second microchannel reactor of the microchannel reaction device to obtain a vegetable oil polyol for flexible polyurethane foam; and (3) using the vegetable oil polyol for flexible polyurethane foam obtained in the step (2) as the unique polyol, and subjecting the same and an isocyanate polyol to a foaming reaction to obtain the flexible polyurethane foam.

A dimer fatty acid-polyether-reaction product prepared by reacting a composition containing at least 80 wt % of one or more dimer fatty acids with at least one polyether of application formula (I) in a molar ratio of 0.7/2.3 to 1.6/1.7. The reaction product has a number-average molecular weight of 4800 to 40000 g/mol and an acid number of less than 10 mg KOH/g.