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US 4,107,386 AGranted
Anaerobically hardening adhesives and sealants based on (meth)acrylic esters containing polycarbonates terminated by (meth)acrylic ester groups
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsWerner Gruber, Joachim Galinke, Bernd Wegemund
Life of this patent
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Abstract
Polycarbonates terminated by (meth)acrylic ester groups are components of anaerobically setting adhesive compositions based on (meth)acrylic esters and organic peroxides.
Claims21
An anaerobically setting adhesive and sealing composition comprising
- A. a polymerizable portion consisting of (i) 10 to 90% by weight of (meth) acrylic acid esters of terminal hydroxy polycarbonates having at least two terminal hydroxyl groups, (ii) 10 to 40% by weight of cycloaliphatic, heterocyclic, or aliphatic (meth) acrylic acid esters, which are optionally substituted by free hydroxy groups, and (iii) optionally 0.1 to 5% by weight of additional polymerizable, unsaturated compounds,
- B. 0.1 to 20% by weight of organic hydroperoxides, and
- C. optionally 0.05 to 5.0% by weight of stabilizers and 0.1 to 5% by weight of accelerators.
Dependencies are inferred from the claim text.