Ciba Specialty Chemicals Corporation

Vantico Limited

Dean Tallak Behm

Martin Roth

Sameer H Eldin

Carl W Mayer

Qian Tang

Klaus Petschel

Core/shell particles comprising a core comprising an elastomer having a T,value of <0&deg; C., onto which a shell of a crosslinked copolymer is grafted, where the proportion of the crosslinking component in the copolymer of the shell is from 5 to 90% by weight, based on the total amount of the comonomers of the shell copolymer, are suitable as toughening agents for epoxy resins, with which they have good compatibility.

Core/shell particles, and curable epoxy resin composition comprising same

Core/shell particles comprising a core comprising an elastomer having a T.sub.G value of &lt;0.degree. C., onto which a shell of a crosslinked copolymer is grafted, where the proportion of the crosslinking component in the copolymer of the shell is from greater than 5 to 90% by weight, based on the total amount of the comonomers of the shell copolymer, are suitable as toughening agents for epoxy resins, with which they have good compatibility.

Core/shell particles, and curable epoxy resin compositions comprising

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Muttenz, Switzerland

Dean Tallak Behm