Chipping-resistant paint
US6340519B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/254
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water-based chipping-resistant paint which comprises 30 to 65 weight percent of solid matter and 0.1 to 10 weight percent of low-temperature volatility solvent as a water-based dispersion substance and wherein the solid matter contains 15 to 75 weight percent of film-formable resin, 0.2 to 25 weight percent of thermoexpandable microspheres, and 20 to 80 weight percent of chipping-resistant material, facilitates vaporization of water at the time of film formation owing to mixing of the low-temperature volatility solvent, can prevent cracking and blistering of a film due to water remaining in the film and vaporization of water remaining after the film formation, and readily form a thick film owing to an expansion effect of the thermoexpandable microspheres at the stage of baking after coating, and therefore is suitable for a chipping resistant underbody coating for automobiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.