Thermochromic color masterbatch
US4957949A · kind A · utility
49Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1988 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Oct 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2491/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material which is coated with a hydrophilic high-molecular weight substance, said thermochromic granular material being a mixture of a thermochromic composition comprising an electron-donating chromogen, an electron acceptor and a solvent with a thermosetting resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.