Abstract:
Disclosed is an adhesive containing a polyurethane and 0.0001 to 0.1 mole of carbodiimide groups per 100 g of polyurethane. Said adhesive is characterized in that the polyurethane has a concentration of 0.0001 to 0.1 mole of hydroxysilane or alkoxysilane groups (silane groups) per 100 g of polyurethane.
Abstract:
Disclosed is a mixture containing - 95 to 99.5 percent by weight of an epoxy resin A) that comprises at least two terminal epoxy groups and can be obtained by reacting polyols with epoxy group-containing compounds, and - 0.5 to 5 percent by weight of a polymer B) which can be obtained by means of radical polymerization and contains 0.01 to 0.4 mole of epoxy groups per 100 g of polymer B), the percentages by weight being in relation to the combined weight of A) and B).
Abstract:
The invention relates to an aqueous dispersion containing a polyurethane that is composed of: a) organic diisocyanates; b) dihydroxy compounds with a molecular weight of between 500 and 5000 g/mol, said compounds containing no ionic group or a group that can be converted into an ionic group; c) monovalent to trivalent alcohols, which in addition contain an ionic group; d) optionally other compounds that differ from a) to c). Said dispersion is characterised in that the polyurethane contains less than 0.6 wt. % carbamide groups, (calculated with a molecular weight of 56 g/mol), that the ionic group in c) is at least partially neutralised using an alkali cation and that compounds a), b), c) and d) are not converted in the presence of a catalyst containing a metal-carbon bond.
Abstract:
The invention relates to thiocarbamides comprising at least one carbodiimide group and at least one thiocarbamide acid ester group of formula (I).
Abstract:
Disclosed are stick glues containing a copolymer or polymer mixture (hereafter referred to as polymer ) as an adhesive. Said stick glues are characterized by the fact that 5 to 80 percent by weight of the polymer consist of at least one monomer of formula I, wherein R and R independently represent an H atom or a C1 to C4 alkyl group, or R and R jointly represent a C2 to C6 alkylene group such that a 4-membered to 8-membered ring is formed, and R to R independently represent an H atom or a C1 to C4 alkyl group.
Abstract:
Aqueous composition comprising a polyurethane (A) an epoxy resin (B) obtainable by reacting compounds having epoxide groups with diols or polyols, and a crosslinker (C) for the epoxy resin.
Abstract:
Aqueous dispersions comprising a polyurethane synthesized from a) diisocyanates, b) diols of which b 1 ) from 10 to 100 mol %, based on the total amount of diols (b), have a molecular weight of from 500 to 5 000, and b 2 ) from 0 to 90 mol %, based on the total amount of diols (b), have a molecular weight of from 60 to 500 g/mol, c) monomers other than the monomers (a) and (b), containing at least one isocyanate group or at least one isocyanate-reactive group and further carrying at least one hydrophilic group or potentially hydrophilic group by means of which the polyurethane is made dispersible in water, d) if appropriate, further, polyfunctional compounds other than the monomers (a) to (c), containing reactive groups which are alcoholic hydroxyl groups, primary or secondary amino groups or isocyanate groups, and e) if appropriate, monofunctional compounds other than the monomers (a) to (d), containing a reactive group which is an alcoholic hydroxyl group, a primary or secondary amino group or an isocyanate group, wherein the diols b 1 comprise less than 0.5 part by weight of cyclic compounds per 100 parts by weight of diols b1.
Abstract:
A process for adhesively bonding a substrate, using an adhesive comprising a polymer binder and a crosslinker compound I comprising carbodiimide groups, wherein the compound comprising carbodiimide groups is obtainable by reacting a) carbodiimides of 1,3-bis(1-methyl-1-isocyanatoethyl)benzene, 1,4-bis(1-methyl-1-isocyanatoethyl)benzene or a mixture thereof with b) polyalkylene oxides having at least two isocyanate-reactive groups, preferably at least two hydroxyl groups, and c) if appropriate, further compounds reactive with a) or b).
Abstract:
Dispersiones acuosas que comprenden un poliuretano sintetizado de a) diisocianatos, b) dioles de los cuales b1) de 10 a 100% molar, basado en la cantidad total de dioles (b), tienen un peso molecular de 500 a 5,000, y b2) de 0 90% molar, basado en la cantidad total de dioles (b), tienen un peso molecular de 60 a 500 g/mol, C) monomeros distintos a los monomeros (a) y (b), que contienen cuando menos un grupo isocianato o cuando menos un grupo isocianato-reactivo y que llevan ademas cuando menos un grupo hidrofilico o grupo potencialmente hidrofilico por medio del cual el poliuretano se hace dispersable en agua d) si es apropiado, ademas, compuestos polifuncionales distintos a los monomeros (a) a (c) que contienen grupos reactivos que son grupos hidroxilo alcoholicos, grupos amino primario o secundario o grupos isocianato, y e) si es apropiado, compuestos monofuncionales distintos a los monomeros (a) a (d), que contienen un grupo reactivo que es un grupo hidroxilo alcoholico, un grupo amino primario o secundario o un grupo isocianato, en donde los dioles b1 comprenden menos de 0.5 partes en peso de compuestos ciclicos por 100 partes en peso de dioles b1.