Oligomeric and high-molecular conversion products of allophanic acid esters with nucleophilic compounds and low-molecular, oligomeric and high-molecular compounds with allophanate side and/or terminal groups, and the use thereof
AssigneeBASF Coatings GmbH
InventorsHeinz-Peter Rink, Werner Jung, Ulrike Röckrath, Thomas Savino
Life of this patent
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Abstract
Oligomeric and high molecular mass products of reaction of alkyl and aryl allophanates with nucleophilic compounds, and also low molecular mass, oligomeric and high molecular mass compounds containing lateral and/or terminal allophanate groups, and also the use of the reaction products and/or of the compounds in coating compositions, adhesives and sealing compounds or for producing films.
Claims17
An allophanate group-containing compound comprising
- one or more allophanate groups selected from the group consisting of —O—C(O)—NH—C(O)—NH2, —CH2—NH—C(O)—NH—C(O)—OR1, —O—R2—O—C(O)—NH—C(O)—NH2, and mixtures thereof, wherein R1 is selected from the group consisting of alkyl groups, cycloallkyl groups, aryl groups, and mixtures thereof, and R2 is selected from the group consisting of linear alkanediyl groups, branched alkanediyl groups, cyloalcanediyl groups, arylene radicals, and mixtures thereof, and
- the tranallophanatization residue of a nucleophile comprising at least two primary and/or secondary hydroxy groups and which is selected from the group consisting of poly(meth)acrylates, polyesters, polyrethanes, acrylated polyurethanes, acrylated polyesters, polylactones, polycarbonates, polyethers, (meth)acrylatediols, polyureas, oligomeric polyols, and mixtures thereof.
A process for preparing compounds comprising lateral and/or terminal allophanate groups, comprising
- reacting polyisocyanates with hydroxy functional allophanic esters selected from the group consisting of alkyl allophanates, cycloalkyl allophanates, aryl allophanates, and mixtures thereof.
Compounds comprising lateral and/or terminal allophanate groups, comprising the reaction product of allophanic esters selected from the group consisting of alkyl allophanates, cycloalkyl allophanates, aryl allophanates, and mixtures thereof with nucleophilic compounds, wherein the compounds have from 3 to 10 repeating identical basic building blocks.
Compounds comprising lateral and/or terminal allophanate groups, comprising the reaction product of allophanic esters selected from the group consisting of alkyl allophanates, cycloalkyl allophanates, aryl allophanates, and mixtures thereof with nucleophilic compound, wherein the compounds have more than 10 repeating identical basic building blocks.
Dependencies are inferred from the claim text.