Abstract:
The invention relates to a method for reacting thermoplastic polyurethanes (i) with compounds containing isocyanate groups (ii), wherein compounds (iia) containing at least three aliphatic isocyanate-based groups and compounds (iib) containing two aromatic isocyanate-based groups are used in the form of the compounds (ii) containing isocyanate groups.
Abstract:
The invention relates to a thermoplastic polyurethane comprising the following structural unit: R2-CO-NH-R-Si(R1)3-x(OR1)x where: R is an aliphatic, araliphatic, or aromatic organic radical having from 1 to 20 hydrocarbon atoms, R1 is an alkyl radical or aryl radical having from 1 to 10 carbon atoms, R2 is -NR3-CO-R4 or -O-R5-O-, R3 is a section of the polymer chain of the thermoplastic polyurethane, in particular a radical which derives from the diisocyanate used to prepare the thermoplastic polyurethane, R4 is a section of the polymer chain of the thermoplastic polyurethane, in particular a radical which derives from the following compounds used to prepare the thermoplastic polyurethane: compounds (b) reactive toward isocyanates, or from the chain extender (c), R5 is an alkylene radical having from 2 to 8 carbon atoms, preferably from 3 to 6 carbon atoms, and x is 1, 2 or 3.
Abstract:
Rigid polyurethane foam containing a flat structure containing infrared (IR) absorber particles is claimed. An independent claim is included for the production of this foam.
Abstract:
Thermoplastic polyurethane comprising the reaction product of an isocyanate (a) with a compound (i) having at least one group which is reactive toward isocyanates and also at least two organosilicon groups.
Abstract:
Carbodiimide containing at least one silane group bonded by way of urea groups. Carbodiimide containing the following structure: with the following meanings for n, R1, R2, R3, R4, R5, R6 and R7: n: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20, R1: aliphatic, cycloaliphatic, araliphatic, or aromatic, if appropriate substituted, if appropriate branched-chain radical, R2: aliphatic, cycloaliphatic, araliphatic, or aromatic, if appropriate substituted, if appropriate branched-chain radical, R3: aliphatic, cycloaliphatic, araliphatic, or aromatic, if appropriate substituted, if appropriate branched-chain radical, R4: aliphatic, cycloaliphatic, araliphatic, or aromatic, if appropriate substituted, if appropriate branched-chain radical, R5: methyl-, ethyl, -O-CH3, -O-CH2-CH3, -O-CH(CH3)2, -O-C(CH3)3, or -O-CH2-CH2-O-CH3 R6: methyl-, ethyl, -O-CH3, -O-CH2-CH3, -O-CH(CH3)2, -O-C(CH3)3, or -O-CH2-CH2-O-CH3 R7: methyl-, ethyl, -O-CH3, -O-CH2-CH3, -O-CH(CH3)2, -O-C(CH3)3, or -O-CH2-CH2-O-CH3.
Abstract:
Thermoplastic polyurethane (i) comprising from 20% by weight to 70% by weight of isocyanate dissolved in the thermoplastic polyurethane, based on the total weight of the thermoplastic polyurethane (i) comprising the isocyanates.