Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1994-11-18
1996-01-16
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
427384, 4273855, 4274071, 428412, 524 83, 524 84, 524 99, 524100, 524102, 524111, 524335, 524338, C08K 534
Patent
active
054848288
ABSTRACT:
A thermoplastic polycarbonate molding composition free from organo phosphorus compounds and having an improved resistance to discoloration caused by exposure to High Intensity Discharge (HID) light and heat is disclosed. Accordingly, the molding composition contains (co)polycarbonate resin, a dimeric benzotriazole and an ester of a 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid. In a preferred embodiment, a sheet made of (co)polycarbonate resin is rendered improved resistance to discoloration by having applied to at least one of its surfaces an adherent protective film prepared from the polycarbonate composition of the invention.
REFERENCES:
patent: 3892889 (1975-07-01), Cohnen et al.
patent: 4276233 (1981-06-01), Markezich et al.
patent: 4563516 (1986-01-01), Schreckenberg et al.
patent: 4707393 (1987-11-01), Vetter
patent: 4812498 (1989-03-01), Nakahara et al.
patent: 4948666 (1990-08-01), Paul et al.
patent: 5001177 (1991-03-01), Winfried et al.
Dunay Kevin F.
Krishnan Sivaram
Paul Winfried G.
Bayer Corporation
Gil Joseph C.
Mosley Terressa
Preis Aron
Seidleck James J.
LandOfFree
Color-stable polycarbonate composition and articles molded there does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color-stable polycarbonate composition and articles molded there, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color-stable polycarbonate composition and articles molded there will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-309809