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US 9,175,145 B2Granted
Polymeric epoxy resin composition
AssigneeEvonik Hanse GmbH
InventorsChristian Eger, Stephan Sprenger
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Abstract
The invention relates to a polymeric composition containing: a) at least one epoxy resin; b) at least one copolymer with groups, which react with epoxy resins, and with a glass transition temperature Tg of −20° C. or lower, c) nanoparticles having a mean particle size dmax ranging from 5 to 150 nm that is measured by means of a small-angle neutron scattering (SANS). The inventive composition enables the production of adhesives, composite materials, coatings and casting compounds exhibiting improved mechanical properties, particularly improve impact strength.
Claims33
A polymeric composition comprising:
- a) at least one epoxy resin,
- b) at least one copolymer having epoxide-reactive groups and a glass transition temperature Tg of −20° C. or less,
- c) nanoparticles having an average particle size dmax as measured by means of small-angle neutron scattering of 5 to 40 nm,
- wherein when the composition is cured, the copolymer forms rubber domains having an average size of 0.05 to 20 μm.
1 more element
Dependencies are inferred from the claim text.