Material having temperature-defendant light transmission

Details Material having temperature-defendant light transmission Material having temperature-defendant light transmission

1996-12-12

1999-06-29

Buffalow, E. Rollins

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525191, 525205, 525207, 525216, 525227, 525241, C08L 3314

Patent

active

059169729

ABSTRACT:
Disclosed are mixtures of two or more polymers of which at least one is cross-linked. Interpenetrating polymer networks are on hand. The polymers mix below a certain temperature and demix above this temperature (LCST behavior). Below the demixing temperature, such interpenetrating polymer networks are optically clear, above the demixing temperature they are milky, turbid and have reduced light transmission due to the light scattering of the phaseseparated system' if the refractive indices of the components do not coincide. The demixing process is fully reversible below the demixing temperature.

REFERENCES:
patent: 4722506 (1988-02-01), Chang
patent: 4881798 (1989-11-01), Yuasa et al.
patent: 5047481 (1991-09-01), Siol et al.
patent: 5104954 (1992-04-01), Mueller

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