COMPOSITION COMPRISING A POLYMER BASED ON EPOXIDE COMPOUNDS

1 . A composition comprising components a), b) and c),

wherein component a) comprises:

1) from 75 to 99.5% by weight of a polymer based on epoxide compounds,

2) from 0.5 to 25% by weight of at least one polyhydric alcohol and

3) optionally additives,

wherein component b) comprises:

1) from 80 to 99% by weight of a curing agent which is suitable for curing the polymer based on epoxide compounds,

2) from 1 to 20% by weight of a polycaprolactone-polysiloxane block copolymer,

3) optionally an accelerator and

4) optionally additives, and

wherein component c) comprises: optionally an accelerator.

2 . Composition according to claim 1 , wherein the ratio of components a) and b) is determined in dependence on the epoxide equivalent of the resin and the equivalent mass of the curing agent used.

3 . Composition according to claim 1 , wherein the polymer based on epoxide compounds is selected from the group of the polyepoxides based on cycloaliphatic or aliphatic compounds, based on bisphenol A and/or F and advancement resins produced therefrom, based on tetraglycidyl-methylenedianiline (TGMDA), based on epoxidized halogenated bisphenols and/or epoxidized novolaks and/or polyepoxide esters based on phthalic acid, hexahydrophthalic acid or based on terephthalic acid, epoxidized o- or p-aminophenols, epoxidized polyaddition products of dicyclopentadiene and phenol, based on epoxidized flourenone bisphenols.

4 . Composition according to claim 1 , wherein the polyhydric alcohol is selected from glycols, in particular ethylene glycol, propylene glycol and/or polypropylene glycol, glycerols and/or sugar compounds.

5 . Composition according to claim 1 , wherein the curing agent is an anhydride, in particular tetrahydrophthalic anhydride (THPA), hexahydrophthalic anhydride (HHPA), methyltetrahydrophthalic anhydride (MTHPA), methylhexahydrophthalic anhydride (MHHPA), methylnadic anhydride (MNA), dodecenylsuccinic anhydride (DBA) or mixtures thereof.

6 . Composition according to claim 1 , wherein the curing agent is an amine, in particular a polyamine, polyamide, Mannich base, polyaminoimidazoline, polyetheramine and mixtures thereof.

7 . Composition according to claim 1 , wherein the polycaprolactone-polysiloxane block copolymer has the following structure

n: integer between 1 and 200,

R 2 , R 3 , R 4 , R 5 : identical or independently of one another selected from linear or branched alkyl, alkenyl, haloalkyl, haloalkenyl groups having up to 6 carbon atoms; aryl groups having from 5 to 7 carbon atoms or aralkyl groups having from 6 to 8 carbon atoms,

R 1 ′, R 1 : identical or independently of one another selected from alkyl ethers or alkylamines having up to 7 carbon atoms,

A″ and A′: identical or independently of one another with

wherein

p: an integer from 1 to 6,

m: an integer from 1 to 25,

R 6 : hydrogen or linear or branched alkyl groups having up to 6 carbon atoms.

8 . Composition according to claim 7 , wherein the polycaprolactone-polysiloxane block copolymer has the following structure:

wherein n≧1 and y>3.

9 . Process for the preparation of a cured composition, comprising the following steps:

preparing components a) and b) according to claim 1 ,

mixing components a) and b) and optionally c) according to claim 1 at temperatures up to 120° C.,

optionally shaping the mixture that is produced, and

curing the mixture at temperatures up to 180° C.

10 . Cured composition comprising the components of claim 1 for the production of casting resins, composite compositions, coatings, adhesives and molding compositions.