US 2013/0280536 A1 · HEAT-CURING SEALANT COMPOSITIONS HAVING FAST SKIN FORMATION AND HIGH TENSILE STRENGTH

Abstract

The present invention relates to heat-curing sealant compositions including at least epoxy resin, dicyanodiamide or an amine complex of a Lewis acid, polyurethane polymer (PUP) containing isocyanate groups and polyaldimine. These single component sealant compositions are characterized by a rapid skin formation and high tensile strength. Because of the short skin formation time, said compositions are optimally suitable for use as sealants in autobody work because they can be excellently layered on top of same.

Claims15

Dependent claims

A heat-curing sealant composition, comprising:

at least one epoxy resin (A) with an average of more than one epoxy group per molecule;
at least one heat-activatable curing agent or accelerator (B) selected from the group consisting of dicyanodiamide or an amine complex of a Lewis acid;
at least one polyurethane polymer (PUP) having isocyanate groups and
at least one polyaldimine (PA).

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/997,294Filed 19 Dec 2011

Priority

EP 10196683.623 Dec 2010

Published

24 Oct 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification21 codes

C09J 175/04
Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers: polyurethanes
B05D 3/02
Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate…: by…
B32B 7/04
Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between…:…
B32B 15/08
Comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin

Heat-curing sealant compositions having fast skin formation and high tensile strength

Life of this patent

Heat-curing sealant compositions having fast skin formation and high tensile strength

Life of this patent

Abstract

Claims15