Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1994-05-23
1996-04-09
Lesmes, George F.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 56, 430 64, 525 61, G03G 1504, G03G 1500, C08F 800, C08G 6348
Patent
active
055060820
ABSTRACT:
The invention is a self-cross-linked polyvinyl butyral (PVB) binder for organic photoconductors (OPC's). The non-cross-linked form of the binder is available from Monsanto Co. in the U.S.A. as Butvar.TM., and from Sekisui Chemical Co. in Japan as Slek.TM.. It was discovered that the PVB may be self-cross-linked by subjecting it to a thermal cure at between about 150.degree.-300.degree. C. for about 2 hours. Other ways of cross-linking, for example, e-beam, UV or X-ray radiation, may achieve results similar to those obtained with heat. No cross-linker, nor cross-linkable copolymer nor catalyst is required to accomplish the cross-linking. After self-cross-linking, the PVB has good mechanical durability and good anti-solvent characteristics. In addition, the self-cross-linked PVB's glass transition temperature (T.sub.g) increases from about 65.degree. C. to about 170.degree. C. Also, when conventional photoconductor pigments are dispersed in the self-cross-linked PVB, they are well dispersed, and the resulting OPC's have good charge acceptance, low dark decay, and in general, good photodischarge characteristics. Also, OPC's with the self-cross-linked PVB exhibited improved adhesion, so multi-layered OPC's made according to this invention will have improved inter-layer bonding and longer economic lives.
REFERENCES:
patent: 4355886 (1982-10-01), Perez et al.
patent: 4499236 (1985-02-01), Hermann et al.
patent: 5087540 (1992-02-01), Murakami et al.
Codd Bernard P.
Hewlett--Packard Company
Lesmes George F.
LandOfFree
Cross-linked polyvinyl butyral binder for organic photoconductor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cross-linked polyvinyl butyral binder for organic photoconductor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-linked polyvinyl butyral binder for organic photoconductor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-137981