Described herein is a polyurethane having an isocyanate group and having CC double bonds on a side chain, a process for preparing such a polyurethane, and an UV-moisture dual cure polyurethane reactive hotmelt including the polyurethane.

The invention relates to a method for producing a polymer comprising the following steps: (A) depositing a radically cross-linkable resin, obtaining a radically cross-linked resin; and (B) treating the radically cross-linked resin under conditions which are sufficient to trigger a chemical reaction that is different from the radical cross-linking in the radically cross-linked resin. The radically cross-linkable resin comprises a curable component, in which there are NCO groups, olefinic CC double bonds and epoxide groups, and the chemical reaction in the radically cross-linked resin that is different from the radical cross-linking is the reaction of NCO groups and epoxide groups to form oxazolidinone groups.

Provided is a curable resin composition capable of forming a coating film excellent in the weather resistance and the impact resistance with a high productivity even on a member having a complicated shape for outdoor use. The curable resin composition contains a fluorinated copolymer (A) and a compound (B). The fluorinated copolymer (A) includes a fluorinated copolymer having a unit derived from a fluoroolefin, a unit having an ethylenic unsaturated group in its side chain, and a unit having a functional group, and the unit having a functional group is at least one member selected from a unit having a hydroxy group, a unit having a carboxy group and a unit having an alkoxysilyl group. The compound (B) includes at least one acryloyl group and/or methacryloyl groups and at least two isocyanate groups in one molecule.

The present invention provides a radiation curable composition comprising a hydroxyl functional urethane (meth)acrylate compound (A) having an hydroxyl value between 10 and 80 mg KOH/g and which is the reaction product of a hydroxyl functional (meth)acrylate compound (A1) obtained from the reaction a or b: a. at least one diepoxy functional compound (A11a) with a (meth)acrylate compound (A11b) comprising at least one (meth)acrylate group and one carboxylic acid functional group or b. a carboxylic acid functional compound (A12a) comprising two carboxylic acid groups with an epoxy (meth)acrylate compound (A12b) comprising one glycidyl group and at least one (meth)acrylate group, with a diisocyanate functional compound (A3), and optionally a compound (A2) different of compound (A1) comprising two hydroxyl groups. Such composition is useful for example for dual curable compositions or for thick pigmented systems.

The present invention provides a radiation curable composition comprising a hydroxyl functional urethane (meth)acrylate compound (A) having an hydroxyl value between 10 and 80 mg KOH/g and which is the reaction product of a hydroxyl functional (meth)acrylate compound (A1) obtained from the reaction a or b: a. at least one diepoxy functional compound (A11a) with a (meth)acrylate compound (A11b) comprising at least one (meth)acrylate group and one carboxylic acid functional group or b. a carboxylic acid functional compound (A12a) comprising two carboxylic acid groups with an epoxy (meth)acrylate compound (A12b) comprising one glycidyl group and at least one (meth)acrylate group, with a diisocyanate functional compound (A3), and optionally a compound (A2) different of compound (A1) comprising two hydroxyl groups. Such composition is useful for example for dual curable compositions or for thick pigmented systems.

The present invention relates to a polyisocyanate composition comprising, on the basis of the total mass of the polyisocyanate composition, 97 mass % or more of a polyisocyanate; and 2.0 mass ppm to 1.010.sup.4 mass ppm of a compound represented by the formula (1): ##STR00001## wherein R.sup.1 is an aliphatic group having 6 to 70 carbon atoms, R.sup.2 is an aromatic ring, a is an integer of 1 to 5, b is an integer of 0 to 4, and the sum of a and b is 2 to 5.

The present invention relates to radiation-curable, water-dispersible polyurethane (meth)acrylates, to coating compositions comprising the latter, to the use thereof and to the process for production thereof.

The present invention relates to a polyisocyanate composition comprising, on the basis of the total mass of the polyisocyanate composition, 97 weight % or more of a polyisocyanate, and 2.0 mass ppm or more and 1.010.sup.4 mass ppm or less of a compound having at least one unsaturated bond in which the compound is a different compound from the polyisocyanate, or 5.0 mass ppm or more and 2.010.sup.4 mass ppm or less of at least one inactive compound selected from the group consisting of a hydrocarbon compound, an ether compound, a sulfide compound, a halogenated hydrocarbon compound, a Si-containing hydrocarbon compound, a Si-containing ether compound, and a Si-containing sulfide compound.

Disclosed is a curable resin composition that includes radical polymerizable monomers including a monofunctional radical polymerizable monomer, a linear or branched polymer containing a polyoxyalkylene chain, and a radical polymerization initiator.

Modification of functional groups along a polymer backbone to render the groups activatable upon exposure to actinic radiation is described. The polymers are typically controlled architecture polymers. Also described are adhesives containing the modified architectured polymers and related methods of use.