Acrylic flexible light pipe of improved thermal stability

Details Acrylic flexible light pipe of improved thermal stability Acrylic flexible light pipe of improved thermal stability

1997-10-14

1999-07-27

Sanghavi, Hemang

Optical waveguides

Having particular optical characteristic modifying chemical...

Of waveguide core

385141, 385123, 264 124, 264 128, 264 129, 264 16, G02B 104, B29C 4788

Patent

active

059304421

ABSTRACT:
Acrylic light pipe as described in Bigley et al., U.S. Pat. Nos. 5,406,641 and 5,485,541, has adequate thermal stability for many purposes. It has been found that improved thermal stability, as reflected in color formation, can be imparted by adjusting the polymerization conditions to produce the uncured core polymer of the core/clad construction with a much reduced terminal vinyl content, preferably below 0.5 vinyl groups/1000 monomer units.

REFERENCES:
patent: 5298327 (1994-03-01), Zarian et al.
patent: 5318737 (1994-06-01), Trabert et al.
patent: 5406641 (1995-04-01), Bigley et al.
patent: 5485541 (1996-01-01), Bigley et al.
patent: 5555525 (1996-09-01), Ho et al.
patent: 5773520 (1998-06-01), Bertelo et al.

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