Thermochromic opaque composition, laminate member employing the same, and three-dimensional member employing said laminate member and capable of concealing and revealing the interior
US5490956A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1993 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Oct 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S252/962
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There are provided a thermochromic opaque composition capable of exhibiting change in transparency together with change in color in response to temperature variation, a laminate member employing the same, and a three-dimensional article capable of concealing and revealing the interior, utilizing the laminate member. The thermochromic oaque composition is formed by dispersing a thermochromic material, capable of developing and erasing color by an electron donating-accepting reaction, in small particles in vinyl chloride-vinyl acetate matrix resin. The above-mentioned structure realizes reversible change in transparency, together with change in color, in response to temperature variation, with hysteresis with a temperature difference of 10.degree. C. at minimum to 50.degree. C. between the high and low trigger temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.