A basecoat coating composition includes an aromatic polyurethane pre-polymer having isocyanate terminal end groups, a first solvent and optionally a second VOC-exempt solvent, in which the total composition formulation has a VOC content of less than 97 g/L. A topcoat coating composition includes an aliphatic polyurethane pre-polymer having isocyanate terminal end groups, a first solvent and optionally a second VOC-exempt solvent, in which the total composition formulation has a VOC content of less than or equal to 95 g/L. The total composition formulations of the basecoat and/or topcoat may have a VOC content of less than 50 g/L. A membrane system may include an optional primer coating, and the above described basecoat and topcoat coating compositions.

The present invention relates to a process for producing translucent polyurethane and polyisocyanurate foams by reaction of a component A, comprising A1 at least one polyol reactive with component B; A2 optionally at least one amine; A3 water and optionally formic acid or at least one physical blowing agent or mixtures thereof; A4 at least one foam stabilizer; A5 optionally auxiliary and/or additive substances; A6 optionally at least one flame retardant; A7 at least one catalyst; and a component B, comprising B1 at least one aliphatic or cycloaliphatic polyisocyanate component or a combination thereof; and B2 optionally at least one hydrophilized isocyanate; and B3 more than or equal to 10 parts by weight and up to 70 parts by weight of an aromatic polyisocyanate component, wherein the parts by weight of B3 are based on the sum of the parts by weight of B1 to B3 which are normalized to 100 parts by weight. The invention is characterized in that the reaction of component A with component B is carried out at an isocyanate index of at least 150, wherein the obtained translucent polyurethane and polyisocyanurate foams have a light transmission according to EN ISO 13468-2:2006 of at least 10% and a haze of at least 70%, determined according to ASTM D1003-13, in each case measured at a layer thickness of 20 mm. The present invention further relates to the polyurethane and polyisocyanurate foams obtained by the process and to the use thereof as a construction element, as a wall element, as a floor element, in buildings, in vehicles or lamps.

An adhesive kit 1 separately includes a main agent layer 2 containing a polyamine component, and a curing agent layer 3 containing a polyisocyanate component. When the main agent layer 2 is reacted with the curing agent layer 3, the reactive parameter Pr exceeds 40% and the diffusion parameter Pd exceeds 15%.

The present invention has an object of obtaining an electrically peelable adhesive product that is strong in adhesibility when used, is excellent in peelability even though a low voltage is applied, and does not leave much adhesive deposit after being peeled. The present invention achieves the above object by virtue of an electrically peelable adhesive composition contained in the adhesive product, the adhesive composition comprising an acrylic polymer, an ionic liquid having an ionic conductivity of 10.sup.−4 S/cm or more to 10.sup.−2 S/cm or less, and an alkyl ether of a polyethylene glycol, and containing 5 parts by weight or more to 30 parts by weight or less of the ionic liquid and of the alkyl ether of the polyethylene glycol with respect to 100 parts by weight of the acrylic polymer.

A coating composition includes a blocked urethane elastomer (A) containing a terminal isocyanate group blocked with an oxime compound and having a number average molecular weight of 800 to 5,000, an aromatic diamine compound (B) containing an electron-donating group, and an amide compound (C). An equivalent ratio (amino group/isocyanate group) of the amino group of the aromatic diamine compound (B) to the isocyanate group of the blocked urethane elastomer (A) is within a range of 1.0 to 2.0. A solid content of the amide compound (C) is within a range of 0.5 mass % to 5 mass % based on a total solid content of the blocked urethane elastomer (A) and the aromatic diamine compound (B).

A method for preparing a novel waterborne polyurethane foam layer for synthetic leather is disclosed. The method includes first preparing a charged cellulose nanofiber by using a wood pulp as a raw material; meanwhile, subjecting a polyisocyanate, a macromolecular diol, a hydrophilic chain extender and a small molecular chain extender to a polyaddition reaction and an acid-base neutralization reaction in sequence, to obtain a cationic or anionic waterborne polyurethane; adding the charged cellulose nanofiber and a certain amount of a crosslinking agent to the oppositely charged ionic waterborne polyurethane emulsion, stirring the resulting mixture, forming a bimolecular layer at the gas/liquid interface by a self-assembly of the cellulose nanofiber and waterborne polyurethane nanoparticles through electrostatic interactions to obtain a stable Pickering foam; using the stable Pickering foam as a template, drying and solidifying to obtain the waterborne polyurethane foam layer for synthetic leather.

Biobased diisocyanates are derived from 3-petadecyl phenol, which is derived from Cardanol harvested from cashew nutshell liquid food waste. The biobased diisocyanates are of the formulas: ##STR00001##
wherein R is an alkyl chain C.sub.15H.sub.31 (n-pentadecyl); R.sub.1=CH.sub.3 or COCH.sub.3; and R.sub.2 is an alkylene of from about 1 to 18 carbon atoms.

The present invention provides fire-retarded rigid polyurethane foam comprising the reaction product of polyol and isocyanate foam forming components and a dialkyl phosphorus-containing compound, namely a reactive mono-hydroxyl-functional dialkyl phosphinates, as flame retardant, serving as highly efficient reactive flame retardant in said rigid polyurethane foam.

A basecoat coating composition includes an aromatic polyurethane pre-polymer having isocyanate terminal end groups, a first solvent and optionally a second VOC-exempt solvent, in which the total composition formulation has a VOC content of less than 97 g/L. A topcoat coating composition includes an aliphatic polyurethane pre-polymer having isocyanate terminal end groups, a first solvent and optionally a second VOC-exempt solvent, in which the total composition formulation has a VOC content of less than or equal to 95 g/L. The total composition formulations of the basecoat and/or topcoat may have a VOC content of less than 50 g/L. A membrane system may include an optional primer coating, and the above described basecoat and topcoat coating compositions.

A molded product of the present invention includes a polythiourethane, in which an SH group concentration according to an IR analysis method is 0.30 wt % to 3.0 wt %.