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.

Use of compounds selected from polyols derived from dimer fatty acids and/or dimer fatty alcohols as toughening agent in a process for making polyisocyanate polyaddition reaction products, in particular for polyisocyanate polyaddition reaction products having a hardblock >40% and a process for making said products.

Polyols are produced by an alkoxylation process in which a vegetable oil containing hydroxyl functional groups is combined with a DMC catalyst to form a mixture, the DMC catalyst is then activated by adding ethylene oxide and/or propylene oxide to the vegetable oil/catalyst mixture, and ethylene oxide and propylene oxide are added to the mixture containing activated DMC catalyst in amounts such that the total of percentage of ethylene oxide in the polyol plus percentage of primary hydroxyl groups in the polyol produced is from 50 to 77% and the percentage of primary hydroxyl groups is at least 30% but less than 50%. These polyols are useful for the production of molded polyurethane foams, particularly, hot-cure molded polyurethane foams.

A vegetable oil polyol for flexible polyurethane foam, a preparation method and application thereof. The method includes the following steps: (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; and (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 the vegetable oil polyol for flexible polyurethane foam.

A one-part polyurethane composition includes the reaction product of at least one polyether polyol PO, at least one thermoplastic polyester polyol PE, at least one hydrophobic polyol PH, and at least one polyisocyanate PI, preferably methylene diphenyl diisocyanate (MDI), wherein the composition has a remaining isocyanate content of between 0.8 and 3.5 wt.-%, preferably between 1.4 to 1.8 wt.-%, based on the total weight of the isocyanate-functional polymers comprised therein, and wherein said polyether polyol PO includes a bifunctional polyether polyol PO1 and a trifunctional polyether polyol PO2 and wherein said hydrophobic polyol PH is a polyester polyol based on fatty acids. The inventive one-component composition exhibits high green strength and long open time, as well as high storage stability. It is especially suitable as adhesive, in particular for automotive windshields and is preferably applied warm.

Two-component lamination adhesive, having a NCO component obtained by reacting a polyisocyanate with a composition of diols, a multilayer film comprising an adhesive layer composed of said lamination adhesive, a process for the preparation of said film, and use of said film in the manufacture of flexible packagings.

A reactive hot-melt adhesive composition that is moisture curable contains: a urethane prepolymer having an isocyanate group, a (meth)acrylic resin, and an adhesion promoter containing at least an isocyanate group-containing (meth)acrylamide compound.

A polyol component P) contains at least two different polyether polyols A) and C), and at least one polyether ester polyol D). A process can be used for producing rigid polyurethane foams using the polyol component P), and the rigid polyurethane foams produced therefrom are useful.

A polyurethane foam and a method of forming a polyurethan foam. The polyurethane foam including the reaction product of polyethylene glycol and polypropylene copolymer polyol, a gelation catalyst, a blowing catalyst, lignin, a polymeric isocyanate, and a blowing agent. The method includes mixing polyethylene glycol and polypropylene copolymer polyol, a gelation catalyst, a blowing catalyst, lignin, a polymeric isocyanate, and a blowing agent. Vehicle components are formed from the polyurethane foam.