Polymer film for smart window
US6461541B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Nov 8, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/70
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a polymer film for smart window which can optionally modulate the intensity of light passing through a window on the part of users and more particularly, to the polymer film for smart window, prepared in a manner such that a polyalkylacrylate dispersion polymer containing dispersed dichroic particles, so synthesized via reaction between nickel picolinate and polyiodide, are dispersed in a polymethylphenyl-dimethylsiloxane copolymer as a film medium polymer, using dichlorodimethylsilane and dichloromethylphenylsilane as starting monomers where their molar ratios can be modulated. As such, the film medium polymer, so prepared by modulating its molecular weight distribution and dispersion degree of polymer, has an excellent combination of properties such as (1) the compatibility of the polymer to a dispersion polymer can be enhanced, (2) the dichroic particles can be homogeneously dispersed with the size of less than visible light wavelength, and (3) the permeability of light is modulated from the arrangement of particles induced by electric field, thus increasing the transparency of film itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.