COMPOSITION COMPRISING A POLYMER BASED ON EPOXIDE COMPOUNDS
The invention relates to a composition comprising components a), b) and c), to a process for the preparation thereof, and to the use thereof. In one embodiment, a composition is provided which comprises the following components a), b) and c): a) from 75 to 99.5% by weight of a polymer based on epoxide compounds, from 0.5 to 25% by weight of at least one polyhydric alcohol, and optionally additives, b) from 80 to 99% by weight of a curing agent which is suitable for curing the polymer based on epoxide compounds, from 1 to 20% by weight of a polycaprolactone-polysiloxane block copolymer, optionally an accelerator, and optionally additives, and c) optionally an accelerator.
1 . A composition comprising:
component a) comprising:
from 75 to 99.5% by weight of a polymer based on epoxide compounds; and
from 0.5 to 25% by weight of at least one polyhydric alcohol; and component b) comprising:
from 80 to 99% by weight of a curing agent which is suitable for curing the polymer based on epoxide compounds; and
from 1 to 20% by weight of a polycaprolactone-polysiloxane block copolymer.
2 . The 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 . The 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 tetraglycidylmethylenedianiline (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 . The composition according to claim 1 , wherein the polyhydric alcohol is selected from glycolsglycerols, sugar compounds, and combinations thereof.
5 . The composition according to claim 1 , wherein the curing agent comprises an anhydride.
6 . The composition according to claim 1 , wherein the curing agent comprises an amine.
7 . The 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 . The composition according to claim 7 , wherein the polycaprolactone-polysiloxane block copolymer has the following structure:
wherein n≥1 and y>3.
9 . The composition according to claim 4 , wherein the glycols are selected from the group consisting of ethylene glycol, propylene glycol, polypropylene glycol, and combinations thereof.
10 . The composition according to claim 5 , wherein the anhydride is selected from the group consisting of tetrahydrophthalic anhydride (THPA), hexahydrophthalic anhydride (HHPA), methyltetrahydrophthalic anhydride (MTHPA), methylhexahydrophthalic anhydride (MHHPA), methylnadic anhydride (MNA), dodecenylsuccinic anhydride (DBA), and combinations thereof.
11 . The composition according to claim 6 , wherein the amine is selected from the group consisting of a polyamine, polyamide, Mannich base, polyaminoimidazoline, polyetheramine, and combinations thereof.
12 . A cured composition comprising the components of claim 1 for the production of casting resins, composite compositions, coatings, adhesives and molding compositions.
13 . A 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) 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.