Structural adhesive having excellent anti-corrosion properties
US4943604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A structural adhesive having excellent anti-corrosion properties which comprises: (A) a rubber modified epoxy resin prepared by reaction of a bisphenol epoxy resin and a butadiene-acrylonitrile-(meth)acrylic acid copolymer, (B) an urethane modified epoxy resin, (C) a latent curing agent, and (D) a rust inhibiting pigment selected from the group consisting of: (i) a rust inhibiting pigment comprising aluminum orthophosphate and a zinc compound, (ii) a rust inhibiting pigment comprising aluminum metaphosphate, a zinc compound and/or an alkaline earth metal compound, and (iii) a rust inhibiting pigment comprising aluminum metaphosphate and a zinc compound and optionally an alkaline earth metal compound, wherein the adhesive contains said rubber modified epoxy resin (A) and said urethane modified epoxy resin (B) in a weight ratio of 1:9 to 3:1, and said latent curing agent (C) and said rust inhibiting pigment (D) at 0.1 to 30% by weight and at 5 to 50% by weight respectively based on a total amount of both modified epoxy resins (A) and (B) is disclosed. The structural adhesive of the present invention has extremely excellent anti-corrosion properties and is useful for heming fixation e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.