摘要:
High-solids binder combinations comprising polyisocyanates, special lactone-based polyols and polyacrylate-polyols, a process for preparing such binders, and their use for producing coatings.The lactone-based polyols include ε-caprolactone-based polyols having an average hydroxy functionality ≧2 and a number-average molecular weight of from 119 to 2000 g/mol. The polyacrylate resins are prepared by copolymerizing optionally functional polybutadienes, aromatic monomers, hydroxyalkyl esters of acrylic or methacrylic acid having primary hydroxyl groups, aliphatic esters of acrylic or methacrylic acid and C1 to C8 monoalcohols, α,β-unsaturated C3–C7 monocarboxylic or dicarboxylic acids or of one or more monoesters of maleic acid or fumaric acid and C1 to C14 monoalchols.
摘要:
The present invention relates to innovative, nanoparticle-modified polyisocyanates, a process for their preparation and to their use in coating compositions and adhesives. The process comprises the steps of 1) reacting A) polyisocyanates with B) alkoxysilanes, and subsequently 2) incorporating by dispersion inorganic particles, optionally surface modified, having an average particle size of less than 200 nm as determined by means of dynamic light scattering in dispersion, where the alkoxysilanes are according to formula (I) Q-Z—SiXaY3-a (I) in which Q is an isocyanate-reactive group, X is a hydrolysable group, Y is identical or different alkyl groups, Z is a C1-C12 alkylene group and a is an integer from 1 to 3.
摘要:
The present invention relates to novel coating compositions comprising polyisocyanates, aliphatic oligocarbonate polyols, oligoester polyols and polyacrylate polyols, to a process for their production and to their use in the production of coatings.
摘要:
The present invention relates to innovative, nanoparticle-modified polyisocyanates, a process for their preparation and to their use in coating compositions and adhesives. The process comprises the steps of 1) reacting A) polyisocyanates with B) alkoxysilanes, and subsequently 2) incorporating by dispersion inorganic particles, optionally surface modified, having an average particle size of less than 200 nm as determined by means of dynamic light scattering in dispersion, where the alkoxysilanes are according to formula (I) Q-Z-SiXaY3-a (I) in which Q is an isocyanate-reactive group, X is a hydrolysable group, Y is identical or different alkyl groups, Z is a C1-C12 alkylene group and a is an integer from 1 to 3.
摘要:
The present invention relates to novel compositions of oligocarbonate polyols and oligoester polyols and their use in coating compositions for the production of coatings, particularly scratch-resistant topcoats.
摘要:
The present invention relates to novel coating compositions comprising polyisocyanates, aliphatic oligocarbonate polyols, oligoester polyols and polyacrylate polyols, to a process for their production and to their use in the production of coatings.
摘要:
The present invention relates to novel compositions of oligocarbonate polyols and oligoester polyols and their use in coating compositions for the production of coatings, particularly scratch-resistant topcoats.
摘要:
Processes for preparing siloxane-modified polyisocyanates, the processes comprising: providing a polyisocyanate reactant; and reacting the polyisocyanate reactant with a hydroxyl-containing siloxane having a number-average molecular weight of 200 to 3000 g/mol and an average OH functionality of greater than or equal to 1.8, and corresponding to the general formula (I): wherein X represents an aliphatic, unbranched or branched C1 to C20 radical optionally containing ether groups; R represents a hydroxyl-functional radical; R1 represents a hydrogen or an optionally heteroatom-containing C1 to C20 hydrocarbon radical; and n is 1 to 40; siloxane-modified polyisocyanates prepared thereby, and uses therefor.
摘要:
The present invention relates to nanoparticle-modified polyisocyanates which have been modified by a special siloxane unit and consequently have improved performance properties and also storage stabilities.
摘要:
The present invention relates to hybrid organic-inorganic polyisocyanates based on polyfunctional organosilanes, metal alkoxides and alkoxysilane-containing blocked polyisocyanates for the preparation of organic-inorganic coating compositions and adhesives.