An object of the present invention is to provide a coating composition capable of forming a coating film which can maintain its appearance and gloss over a long period and which has high film hardness and high flexibility and exhibits excellent adhesion with respect to an epoxy resin anticorrosive coating film. An acrylic polysiloxane resin coating composition of the invention includes (A) a silicone resin, (B) a compound having one or more functional groups capable of undergoing Michael addition reaction with an unsaturated double bond in an acryloyloxy group, and having one or more alkoxy groups bonded to silicon, (C) a trifunctional or polyfunctional aliphatic urethane acrylate oligomer having a cyclic structure, and (D) a bifunctional acrylate monomer having no ether structures (except an ether structure in an acryloyloxy group) and no aromatic rings, the mass ratio of the total amount of (A) and (B) to the total amount of any acrylate oligomer(s) and any acrylate monomer(s) being 40:60 to 70:30.

A method of producing a polyurethane or polyisocyanurate foam is provided which involves the use of a specific combination of hydrofluoroolefin blowing agents and cell nucleators. The resulting foams have excellent long term thermal insulating performance and have reduced thickness in comparison to conventional thermal insulating boards. The rigid polyurethane and polyisocyanurate boards may be used to insulate refrigeration bodies, such as those employed in vehicles comprising refrigeration units, and cold storage containers.

A process for producing an object from a precursor comprises the steps of: I) depositing a free-radically crosslinked resin atop a carrier to obtain a ply of a construction material joined to the carrier which corresponds to a first selected cross section of the precursor; II) depositing a free-radically crosslinked resin atop a previously applied ply of the construction material to obtain a further ply of the construction material which corresponds to a further selected cross section of the precursor and which is joined to the previously applied ply; III) repeating step II) until the precursor is formed; IV) treating the precursor obtained after step III) under conditions sufficient to at least partially trimerize to isocyanurate groups NCO groups present in the free-radically crosslinked resin of the obtained precursor to obtain the object.

The invention relates to a non-aqueous coating composition comprising a. a polyisocyanate, b. a polyol having an average functionality of more than 3 hydroxyl groups per molecule, c. a metal based curing catalyst for the addition reaction of isocyanate groups and hydroxyl groups, and d. a mercapto carboxylic acid,
wherein the coating composition does not contain a carboxylic acid wherein the carbonyl group of the carboxylic acid is in conjugation with a π-electron system.

A colorless radiation curable binder dispersion includes water and a radiation curable polyurethane. The polyurethane is formed from a polyisocyanate; an acrylate or methacrylate having at least two hydroxyl (OH) groups and an acrylate or methacrylate group; another acrylate or methacrylate having an OH or amino group; and one of: i) a sulfonate or sulfonic acid having one amino group; ii) a combination of i and a compound including a carboxylic group and an OH or amino group; iii) a combination of i and a homopolymer or copolymer of poly(ethylene glycol) having one or two OH or amino groups at one chain end; or iv) a combination of i, a compound including a carboxylic group and an OH or amino group, and a homopolymer or copolymer of poly(ethylene glycol) having one or two OH or amino groups at one chain end.

An aqueous polyurethane resin having a cationic group in a side chain thereof is obtainable by reacting a polyester polyol, a polyisocyanate, and a diol containing a quaternary N-atom or amino group, the quaternary N-atom or amino group being not present in the carbon chain between the two hydroxyl groups of the diol. The polyester polyol is obtained by reacting an aromatic polycarboxylic acid and a polyol. The polyurethane resin is suitable as a resin in treatment liquids for inkjet printing.

A method to prepare an oligomer which includes a plurality of pendent alkenyl groups, where the method reacts a copolymer formed by copolymerizing styrene and allyl alcohol comprising a polyhydroxy oligomer wherein n is between about 3 and about 50, and having a structure:

##STR00001##

with an isocyanate having a structure:

##STR00002##

to give a urethane-modified copolymer having a structure:

##STR00003##

An adhesive set is disclosed. This adhesive set includes a main agent containing a compound having two or more isocyanate groups and a curing agent containing a compound having two or more hydroxyl groups. At least one of the compound having two or more isocyanate groups and the compound having two or more hydroxyl groups has a disulfide bond in the molecule. At least one of the main agent and the curing agent further contains a curing catalyst. At least one of the main agent and the curing agent further contains a photoradical generator.

A flexible gastight material for a landfill site includes a component A and a component B, the component A including: at least one of polypropylene glycol with a molecular weight of 600-4000, polytetrahydrofuran diol with a molecular weight of 1000-3000, polycaprolactone diol with a molecular weight of 1000-3000, and polycarbonate diol with a molecular weight of 1000-3000; and at least one of 2,4′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate. The flexible gastight material for the landfill site provided in the present application has a micro-closed-cell foam structure. The closed-cell elastic structure of the flexible gastight material may block the volatilization of toxic and harmful odors, and may cut off the diffusion path of the odors by combining with gas treatment systems at the landfill site. The flexible gastight material has excellent water blocking and gas sealing performance.

A thermoplastic polyurethane (TPU) foam product with high flatness, and a preparation method and a use thereof are provided. The TPU foam product is prepared by processing aliphatic thermoplastic polyurethane (ATPU) beads with a melting range of 20° C. to 50° C. and a melting point of 90° C. to 160° C. by a physical gas foaming process to obtain foamed ATPU beads and heating the foamed ATPU beads with a heat source to make the foamed ATPU beads fused. The TPU foam product with high flatness has a density of 0.08 g/cm.sup.3 to 0.8 g/cm.sup.3 and a flatness value of less than 2 mm, and the flatness value is determined by a fixed-length ruler. The TPU foam product not only has high flatness such that diversified designs are allowed for a surface of the product, but also has high resilience.