Photochromic compositions having improved fade rate

Details Photochromic compositions having improved fade rate Photochromic compositions having improved fade rate

1997-07-02

1999-12-07

Sanders, Kriellion

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 94, 524108, 524109, C08K 515

Patent

active

059985208

ABSTRACT:
A thermoplastic molding composition is disclosed comprising (A) at least one resinous component selected from the group consisting of (i) a homogeneous blend of polycarbonate resin and polycaprolactone and (ii) a copoly(carbonate-lactone) copolymer, and (B) at least one compound selected from a group consisting of benzopyrans, naphthopyrans, spirobenzopyrans, spironaphthopyrans, spirobenzoxazines, spironaphthoxazines, fulgides and fulgimides. The composition which contains the photochromic compound at an amount of 0.01 to 1.0 parts per hundred parts of weight of said (A) exhibits good photochromic properties.

REFERENCES:
patent: 3562172 (1971-02-01), Ono et al.
patent: 3578602 (1971-05-01), Ono et al.
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4342668 (1982-08-01), Hovey et al.
patent: 4826977 (1989-05-01), Heller et al.
patent: 4931221 (1990-06-01), Heller
patent: 5106998 (1992-04-01), Tanaka et al.
patent: 5411679 (1995-05-01), Kumar
patent: 5451344 (1995-09-01), Knowles et al.
patent: 5552090 (1996-09-01), Van Gemert et al.
patent: 5565147 (1996-10-01), Knowles et al.
patent: 5628935 (1997-05-01), Hughes et al.
patent: 5708064 (1998-01-01), Coleman et al.
Applied Photochromic Polymer Systems, Edited by C. B. McArdle, Blackie USA Chapman & Hall, New York, (month unavailable) 1992, pp. 80-120.

Affiliated with

Also associated with

Rating

Photochromic compositions having improved fade rate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photochromic compositions having improved fade rate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photochromic compositions having improved fade rate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-824843