Bis-o-aminophenol derivatives, poly-o-hydroxyamides, and...

Details Bis-o-aminophenol derivatives, poly-o-hydroxyamides, and... Bis-o-aminophenol derivatives, poly-o-hydroxyamides, and...

2005-03-15

2005-03-15

Thornton, Yvette C. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C430S283100, C528S310000, C558S272000

Reexamination Certificate

active

06866980

ABSTRACT:
Bis-o-aminophenols, which carry on at least one of their hydroxyl groups a tert-butoxy-carbonyl group, can be reacted with dicarboxylic acids to give the corresponding poly-o-hydroxyamides. Following cyclization to the polybenzoxazole, these polymers have a lower dielectric constant than compounds prepared from corresponding poly-o-hydroxyamides which do not carry any tert-butoxycarbonyl group.

REFERENCES:
patent: 4845183 (1989-07-01), Mueller et al.
patent: 4939215 (1990-07-01), Mueller et al.
patent: 5053314 (1991-10-01), Yamaoka et al.
patent: 20030087190 (2003-05-01), Sezi
patent: 20030134226 (2003-07-01), Sezi
patent: 0 317 942 (1989-05-01), None
patent: 0 378 156 (1990-07-01), None

Affiliated with

Also associated with

Rating

Bis-o-aminophenol derivatives, poly-o-hydroxyamides, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bis-o-aminophenol derivatives, poly-o-hydroxyamides, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bis-o-aminophenol derivatives, poly-o-hydroxyamides, and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3413711