Heat-curable epoxy resin composition containing one blocked and one epoxide-terminated polyurethane prepolymer
US8071217B2 · kind B2 · utility
10Cited by
1References
25Claims
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Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Apr 12, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31515
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Discussed are heat-curable epoxy resin compositions containing at least one epoxy resin A with, on average, more than one epoxide group per molecule, at least one curing agent B for epoxy resins, which is activated by an increased temperature, at least one terminally blocked polyurethane prepolymer of formula (I) and at least one epoxide-terminated polyurethane prepolymer of formula (II). The epoxy resin compositions are particularly suitable for use as one-component, heat-curable adhesives and are characterized by excellent mechanical properties, high glass transition temperatures and high impact resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.