Reactive mixtures of substances on the basis of propargyl-alcohol blocked polyisocyanates, method for preparing the same and the use thereof
AssigneeBASF Coatings GmbH
InventorsGunther Ott, Georg Schön, Hardy Reuter, Joachim Woltering, Ulrike Röckrath
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Abstract
Reactive compositions which consist of or comprise (A) at least one polyisocyanate whose isocyanate groups have been partly or fully blocked with propargyl alcohol, (B) at least one constituent which contains on average at least two isocyanate-reactive functional groups in the molecule, and (C) at least one catalyst which catalyzes the addition reaction of the isocyanate-reactive functional groups of (B) with the acetylenically unsaturated triple bond of the propargyl groups, and their use as coating materials, adhesives, and sealing compounds.
Claims14
A reactive composition comprising
- (A) at least one polyisocyanate whose isocyanate groups have been at least partly blocked with propargyl alcohol,
- (B) at least one constituent that contains on average at least two isocyanate-reactive functional groups in the molecule, and
- (C) at least one thermal crosslinking catalyst that catalyzes the addition reaction of the isocyanate-reactive functional groups of the at least one constituent with the acetylenically unsaturated triple bond of the propargyl alcohol.
The reactive composition of claim 3, wherein
- A. the binders are selected from the group consisting of
- i) addition (co)polymers of ethylenically unsaturated monomers that are at least one of random, alternating, block, linear, branched, comb, oligomeric, and polymeric,
- ii) polyaddition resins,
- iii) polycondensation resins, and
- iv) and combinations thereof;
- and
- B. the reactive diluents are selected from the group consisting of
- i) alkanes having from 9 to 16 carbon atoms in the molecule that are at least one of a polyhydroxy-functionalized cyclic alkane, a polyhydroxy-functionalized acyclic alkane, a polythiol-functionalized cyclic alkane, and a polythiol-functionalized acyclic alkane,
- ii) hyperbranched compounds having a tetrafunctional central group,
- iii) hydromformylated and hydrogenated oligomers prepared by a process comprising metathesising at least one of an acyclic monoolenfin and a cyclic monoolefin to form an oligomer, hydroformylating the oligomer, and subsequently hydrogenating the hydroformylated oligomer, and
- iv) combinations thereof.
A reactive composition
- (A) at least one polyisocyanate whose isocvante groups have been at least partly blocked with propargyl alcohol,
- (B) at least one constituent that contains on average at least two isocyanate-reactive functional groups in the molecule, and
- (C) at least one catalyst that catalyzes the addition reaction of the isocyanate-reactive functional groups of the at least one constituent with the acetylenically unsaturated triple bond of propargyl, alcohol, wherein the at least one catalyst is an onium salts, and wherein the onium salts is selected from group consisting of the N,N,N,N-tetramethyl-ammonium salts, N,N,N,N-tetraetbyl-ammonium salts, N,N,N,N-tetrapropyl-ammonium salts, N,N,N,N-tetrabutyl-ammonium salts, N,N,N-trimethyl-N-cetylammonium salts, triethylphenylphosphonium salts, tributylsulfonium salts, and combinations thereof, and wherein the counterion of these salts is at least one of a hydroxyl and a halide.
Dependencies are inferred from the claim text.