摘要:
The invention relates to a process for the production of a structured surface on a polymeric material. In the production process, the polymeric material is brought into contact with a surface-structuring mold which comprises, on a first side, channels of length at least 10 μm, open toward the first side, and then the removal of the surface-structuring mold from the polymeric material, where the structured surface is obtained on the polymeric material. The polymeric material is brought into contact with the surface-structuring mold at ambient pressure.
摘要:
The present invention relates to a process for preparing a thermoplastic copolymer from polycaprolactam and thermoplastic polyurethane (TPU), to thermoplastic copolymers thus obtained and to shaped articles formed from copolymers of this type.
摘要:
The present invention relates to silylated polyisocyanates, to processes for preparing them, to their use, and to coating compositions comprising them.
摘要:
Hyperbranched polycarbonates having stabilizing groups, prepared by reaction of (a) at least one compound having at least three alcoholic hydroxyl groups per molecule with (b) at least one reagent of the general formula I (c) and at least one reagent of the general formula X3-(A1)m-X4, where the variables are defined as follows: X1, X2 are identical or different and are selected from among halogen, C1-C10-alkoxy, C6-C10-aryloxy and O—C(═O)-halogen, X3 is a functional group selected from among OH, SH, NH2, NH—C1-C4-alkyl, isocyanate, epoxy, COOH, COOR12, C(═O)—O—C(═O), C(═O)—Cl, R12 is C1-C4-alkyl or C6-C10-aryl, A1 is a spacer or a single bond, m is zero or one. X4 is a group selected from among phenol groups, benzophenones, aromatic amines and nitrogen-comprising heterocycles, in each case substituted or unsubstituted.
摘要:
The present invention relates to a composite material which comprises at least one thermoresponsive polymer and at least one inorganic building material. The present invention further relates to a method for producing the composite material and also to the use of the composite material for cooling and for regulating the humidity.
摘要:
The present invention relates to the speeded curing of a composition comprising an epoxy compound, an amino or anhydride hardener and a high-branched polyether amine accelerant. The high-branched polyether amine may have terminal hydroxyl groups (polyol) and/or amino groups (amino modified). The amino-modified high-branched polyether amines are obtainable by subsequently modifying the terminal hydroxyl groups of high-branched polyether amine polyols.
摘要:
A process can be used for preparing a compound A having n groups of formula
(I). In Formula (I), X is C2-C12-alkylene or C2-C12-alkylene substituted with C1-C4-alkoxy, C1-C4-alkylthio, and/or interrupted with O or S; R1, R2, and R3 are independently of one another hydrogen or C1-C4-alkyl: and n is an integer of 1, 2, 3, 4, 5, or 6. The process involves reacting a compound B having n —SH groups with a compound C of formula
(II), in the presence of a free radical generator.
摘要:
Disclosed herein is a branched polyester formed by an acid component, a diol component and a polyol component. The acid component includes an amino dicarboxylic acid of formula (I)
where R1 is hydrogen or a hydrocarbon having 1 to 20 carbon atoms. One or more carbon atoms can be replaced by oxygen, provided that the replaced carbon is not a primary carbon atom and, if more than one oxygen replaces carbon atoms, at least two carbon atoms are between adjacent oxygen atoms. The diol component includes a diol, the polyol component includes a polyol, and the acid component forms carboxylic acid ester groups with the diol and the polyol. The molar ratio of diol and polyol is between 2:1 and 1:2. Further disclosed are a process for preparing the branched polyester, a reaction product of the branched polyester with a polyisocyanate, and a method of using the reaction product.
摘要:
The present invention relates to silylated polyisocyanates containing allophante groups, to processes for preparing them, to their use, and to coating compositions comprising them.
摘要:
Graft polymers whose grafting base is selected from the group consisting of polymers having vinylamine units, polyamines, polyamidoamines and polymers of ethylenically unsaturated acids and which comprise exclusively oligoalkylenimine side chains as side chains, process for the preparation of graft polymers having oligoalkylenimine side chains, at least one oligoalkylenimine which comprises a terminal aziridine group being grafted onto one of said grafting bases, and the use of the graft polymers thus obtainable as process chemicals in the production of paper, as antimicrobial coating materials, as builders in detergents and for the treatment of metal surfaces.