Core/shell polymer toughener suspended in epoxy resin

US6111015A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Sameer H. Eldin · Birsfelden, CH
• Robert P. Peyer · Lausen, CH
• Frans Setiabudi · Sankt Goarshausen, DE
• Urs Gruber · Arlesheim, CH

Key dates

• Filing date: Feb 21, 1995
• Grant date: Aug 29, 2000
• Expiry date: Feb 21, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2666/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Curable suspensions of an epoxy resin formulation comprising PA1 a) a storage-stable suspension of an epoxy resin and a toughener suspended therein which contains no groups that react with a curable epoxy resin system, PA1 b) dicyandiamide, a polycarboxylic acid, a polycarboxylic anhydride, a polyamine, a polyaminoamide, an amino group-containing adduct of an amine and a polyepoxide, a polyol or a catalytically curing hardener, and, as optional components, PA1 c) a curing catalyst, conventional fillers or reinforcing materials, are particularly suitable for use as casting resins, laminating resins or adhesives.