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US 10,590,229 B2Granted
Polyurethane coating compositions
AssigneeCovestro Deutschland AG
InventorsJürgen Köcher, Tanja Hebestreit, Christoph Eggert
Life of this patent
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Abstract
The present invention relates to non-aqueous coating agent compositions, containing at least one polyol (A), at least one silane-modified compound (B) of formula (I), optionally one or more silane-free aliphatic or cycloaliphatic polyisocyanates (C) having free or blocked isocyanate groups, and at least one catalyst (D) for the cross-linking of the silane groups. Furthermore, the non-aqueous coating agent compositions according to the invention can contain one or more surface additives (E) and one or more non-aqueous solvents (F).
Claims12
A nonaqueous coating material composition comprising
- (A) at least one polyol (A),
- (B) at least one tertiary formamidosilane-containing compound of the formula (I);
- where in the formula (I):
- X is an optionally substituted, linear or branched, aliphatic or alicyclic organic molecule residue;
- R1 is an at least divalent, optionally substituted, linear or branched, aliphatic and/or alicyclic structural unit having 1 to 12 carbon atoms, optionally one or more nonadjacent methylene groups is replaced in each case by 0 or S;
- R2 and R3 each independently of one another are an optionally substituted, linear or branched, aliphatic and/or alicyclic group having 1 to 12 carbon atoms;
- and
- n is an integer from 0 to 2;
- (C) optionally one or more silane-free aliphatic or cycloaliphatic polyisocyanates having free or blocked isocyanate groups,
- at least one of the two components (B) and (C) comprises free or blocked isocyanate groups;
- (D) at least one catalyst for the crosslinking of the silane groups of component (B);
- (E) optionally one or more flow control assistants;
- and
- (F) optionally one or more nonaqueous solvents,
- wherein the coating material composition consists of components (A), (B), (C), (D), (E) and (F), wherein component (A) is a polyacrylate polyol, and wherein (C) is an aliphatic polyisocyanate resin based on trimers of hexamethylene diisocyanate having an NCO functionality of 2.8 to 3.6.
12 more elements
A nonaqueous coating material composition comprising
- (A) at least one polyacrylate polyol (A),
- (B) at least one tertiary formamidosilane-containing compound of the formula (I);
- where in the formula (I):
- X is an optionally substituted, linear or branched, aliphatic or alicyclic organic molecule residue;
- R1 is an at least divalent, optionally substituted, linear or branched, aliphatic and/or alicyclic structural unit having 1 to 12 carbon atoms, optionally one or more nonadjacent methylene groups is replaced in each case by O or S;
- R2 and R3 each independently of one another are an optionally substituted, linear or branched, aliphatic and/or alicyclic group having 1 to 12 carbon atoms;
- and
- n is an integer from 0 to 2;
- (C) optionally one or more silane-free aliphatic or cycloaliphatic polyisocyanates having free or blocked isocyanate groups,
- at least one of the two components (B) and (C) comprises free or blocked isocyanate groups;
- (D) at least one catalyst for the crosslinking of the silane groups of component (B);
- (E) optionally one or more flow control assistants;
- and
- (F) optionally one or more nonaqueous solvents,
- wherein (B) is an NCO-free polyurethane based on monomeric HDI, 2,2,4-trimethylpentane-1,3-diol and N-(3-trimethoxysilylpropyl)formamide) or N-(3-Methyldimethoxysilylpropyl)formamide or N-(3-Triethoxysilylpropyl)formamide or N-(3-Methyldiethoxysilylpropyl)formamide, and (C) is an aliphatic polyisocyanate resin based on trimers of HDI having an NCO functionality of 2.8 to 4.5, or
- wherein (B) is an NCO-free polyurethane based on an aliphatic polyisocyanate resin based on trimers of HDI having an NCO functionality of 2.8 to 4.5 and N-(3-trimethoxysilylpropyl)formamide) or N-(3-Methyldimethoxysilylpropyl)formamide or N-(3-Triethoxysilylpropyl)formamide or N-(3-Methyldiethoxysilylpropyl)formamide, and (C) is an aliphatic polyisocyanate resin based on trimers of HDI having an NCO functionality of 2.8 to 4.5, or
- wherein (B) is an NCO-free polyurethane based on an aliphatic polyisocyanate resin based on trimers of HDI having an NCO functionality of 2.8 to 4.5 and N-(3-trimethoxysilylpropyl)formamide) or N-(3-Methyldimethoxysilylpropyl)formamide or N-(3-Triethoxysilylpropyl)formamide or N-(3-Methyldiethoxysilylpropyl)formamide, and optionally (C) is an aliphatic polyisocyanate resin based on trimers of HDI having an NCO functionality of 2.8 to 4.5.
14 more elements
Dependencies are inferred from the claim text.