摘要:
An ethylenically unsaturated polyurethane, which is an oligomer or polymer, results from the reaction of A) an alcohol component comprising: A1) at least one hydroxylated polydiene oligomer or polymer which may optionally be alkoxylated and A2) at least one hydroxyl-functional ethylenically unsaturated compound, which is a monomer or oligomer, bearing at least one ethylenic unsaturation and B) an isocyanate component comprising at least one polyisocyanate with a functionality of at least 2, wherein the molar ratio OH/NCO is greater than 1 and wherein said polyurethane bears reactive free hydroxyl groups. Such ethylenically unsaturated polyurethanes are useful as components of curable compositions such as coatings or adhesives.
摘要:
A polymer useful in coating compositions is described. The polymer is preferably an unsaturated polyurethane polymer, which preferably has an iodine value of at least 10. The polymer may be combined with one or more liquid carriers to form a liquid coating composition useful in coating a variety of substrates, including planar metal substrates.
摘要:
The invention relates to a pigmented aqueous base paint containing a polyether-based reaction product which can be produced by reacting: (a) at least one carboxy-functional component that can be produced by a transesterification reaction of at least one dihydroxycarboxylic acid (a1) with at least one dicarboxylic acid (a2) and/or the anhydride of a dicarboxylic acid (a2), wherein components (a1) and (a2) are used in a molar ratio of 0.5/3.0 to 1.7/1.8, with b) at least one polyether of general structural formula (I), where R is a C3 to C6 alkylene group and n is selected accordingly such that the polyether (b) has a number average molecular weight of 500 to 5000 g/mol, wherein components (a) and (b) are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7, and the resulting reaction product has an acid value of 10 to 50 mg KOH/g.
摘要:
An air drying auto-oxidisable resin composition comprising components: a) a drier comprising a manganese salt complex, and b) a polymer comprising unsaturated fatty acid residues, wherein the manganese salt complex has the following structure I: wherein the anion is selected from Cl-, NO3- or R2COO-, in which case n=2; or the anion is SO42-, in which case n=1; wherein X,Y,Z are independently selected from O, OH, OH2, OC(R3)O, and R4BO2 and wherein a and b are independently an integer of value 2, 3 or 4; R1=H, C1-C20 alkyl optionally substituted with heteroatoms, C6-C20 aryl optionally substituted with heteroatoms; R2=C1-C20 alkyl optionally substituted with heteroatoms, C6-C20 aryl optionally substituted with heteroatoms, or a polymeric residue; and R3=C1-C20 alkyl optionally substituted with heteroatoms, C6-C20 aryl optionally substituted with heteroatoms, or a polymeric residue. R4=C1-C20 alkyl optionally substituted with heteroatoms, or C6-C20 aryl optionally substituted with heteroatoms.
摘要:
The embodiments of the present invention provide a urethane (meth) acrylate compound (A) prepared by a reaction of a hydroxyl group-containing (meth)acrylate compound (x) having a structural moiety derived from µ-caprolactone with a polyvalent isocyanate compound (y), wherein the polyvalent isocyanate compound (y) has an average isocyanate group number of not less than 3.2. A cured coating film formed from an active energy radiation-curable resin composition containing the urethane (meth)acrylate compound has practically acceptable resilience, and is excellent in blocking resistance and surface hardness and further excellent in transparency and metal base adhesiveness.
摘要:
To provide 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. A curable resin composition containing the following fluorinated copolymer (A) and the following compound (B): fluorinated copolymer (A): 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, wherein 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; compound (B): a compound having an acryloyl group or methacryloyl group and at least two isocyanate groups in one molecule.
摘要:
Die vorliegende Erfindung betrifft hydrophilierte Polyurethane mit einem besonders hohen Gehalt an hydroxyfunktionellen, ungesättigten Triglyceriden, ein Verfahren zur Herstellung von darauf basierenden Polyurethandispersionen, die Verwendung der Dispersionen als Bindemittel in oxidativ trocknenden Lacken mit besonders hoher Chemikalienbeständigkeit, sowie Gegenstände und Substrate, die mit diesen Lacken beschichtet sind.
摘要:
Die vorliegende Erfindung betrifft Verfahren zur Härtung von Alkenylethergruppen-haltigen Polyurethanen mit feuchtigkeitsreaktiven Endgruppen mittels eines zweistufigen Härtungsprozesses. Des Weiteren richtet sich die Erfindung auf Alkenylethergruppen-haltige Polyurethane mit Siliziumhaltigen Endgruppen sowie die gehärteten Polymere, die mittels des erfindungsgemäßen Verfahrens erhältlich sind bzw. Produkte, die diese enthalten.