Colored wax articles
US6586506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Jul 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D191/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are improved solid, colored wax-based article having longer color shelf-life. The invention comprises a synthetic wax, a colorant, and an effective amount of a compound of the formula (1) having symbols defined in the text.The preferred embodiments of the articles contain (1) that exhibits a UV absorptivity greater than or equal to 70 liters per gram-cm. at a wavelength of less than or equal to 400 nm, as measured in either methanol, toluene or chloroform, using a conventional UV spectrophotometer.The uses for the articles include candles, crayons, fertilizer coatings, rosebush coatings, plant grafting, sealants, sun-cracking protection of rubber and plastic products, paper coating, packaging food products, electrical insulation, waterproofing and cleaning compounds, carbon paper, and precision investment casting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.