Utilization of flexible coating on steel to impart superior scratch and chip resistance
US5169725A · kind A · utility
3Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Aug 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31794
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Electro-deposition-coated steel is top coated with a flexible coating formed of a polyester having -OH functionality, a polyacrylate having -OH functionality and melamine-formaldehyde resin to provide substantially a stoichiometric amount of reactive sites relative to the total amount of -OH functionality of the polyester and the polyacrylate. The flexible coatings exhibit superior chip and scratch resistance relative to rigid coatings of the type conventionally used in the automotive industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.