Solid state thermosensitive polymer compositions
US4816518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1985 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Mar 21, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/931
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Substantially solid state thermoplastic thermal radiation suppressor composition for suppressing thermal radiation transmission comprise a thermoplastic substance (e.g., a polymer of polymerized styrene, methyl methacrylate and 2-isopropenyl-2-oxazoline) in intimate contact with a composition (e.g., a polymer of polymerized ethylene and acrylic acid) which exhibits a refractive index essentially equal to that of said thermoplastic substance at one temperature but a refractive index different from that of said thermoplastic substance at another temperature. The thermal radiation suppressor compositions exhibit good physical properties and can be employed in the form of thermoplastic sheets or films. The compositions are useful as devices in greenhouses, skylights, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.