摘要:
The present invention is directed to a dienophile-modified fatty acid composition and adhesive. The composition comprises a) a polycondensate of a1) a dimer of a fatty alcohol and/or a dimer of a fatty amine, and a2) a dimer of a fatty acid, said polycondensate having a weight average molecular weight of from 2,000 to 50,000 g/mol, and
b) a fatty acid derivative as a cross-linking agent, wherein said fatty acid derivative is obtainable by reacting b1) a fatty acid ester comprising at least two double bonds, and b2) a dienophile comprising at least one functional group selected from a carboxylic acid, a carboxylic acid ester and a carboxylic acid anhydride,
wherein the polycondensate and the cross-linking agent are capable of reacting with each other.
摘要:
A polycondensate obtainable by reacting: (a) a carboxyl-terminated oligomeric condensation product of (a1) a polyol comprising at least three hydroxyl groups, wherein at least two of these hydroxyl groups are primary hydroxyl groups, and (a2) a dicarboxylic acid, and (b) a diol, comprising two primary hydroxyl groups, wherein the condensation reaction between (a) and (b) is catalyzed by an enzyme. Furthermore, the present invention provides a method of producing such a polycondensate and adhesive compositions comprising said polycondensate.
摘要:
The present invention is directed to a pressure sensitive adhesive obtainable by reacting a) a polycondensate obtainable from a1) a furan derivative and a2) a dimer of a fatty alcohol, a dimer of a fatty acid and/or ester thereof, a dimer of a fatty amine, and/or a dimer of a fatty isocyanate; wherein the polycondensate has a Tg between -50°C and 0°C; and b) a cross-linking agent having at least 2 functional groups per molecule. The invention is also directed to a method for preparing the adhesive and to the use of the adhesive for laminating a sheet or film.
摘要:
The present invention provides a composition comprising an unsaturated polycondensate comprising a component with at least one carbon-carbon double bond and at least two carboxylic acid groups or the respective diester derivatives, preferably itaconic acid or an itaconic acid diester, in combination with a diol or a dimer of a fatty alcohol and a diacid monomer different from the first mentioned component; and a component chosen from a tackifying resin and/or a low-Tg polyester polyol, and/or a plasticizer; wherein the unsaturated polycondensate is capable of being cured via a radical mechanism. The invention is also directed at an environment-friendly adhesive comprising said composition, at a method for preparing the adhesive and at the use of the adhesive for laminating a sheet or a film.
摘要:
The present invention relates to a hydroxyphenyl functionalized poly(ester amide), in particular a L-DOPA-based poly(ester amide), and to its use as an adhesive.
摘要:
The present invention is directed to a polyester-based composition and adhesive containing a heterobicycle. The composition comprises a) a polycondensate of a1) a heterobicycle containing from 4 to 8 carbon atoms and from 1 to 3 oxygen atoms, wherein the heterobicycle is substituted by 2 to 4 hydroxyl groups, and a2) a dimer of a fatty acid, and
b) a cross-linking agent having at least 2 functional groups per molecule;
wherein the polycondensate and the cross-linking agent are capable of reacting with each other.