Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-09-20
2005-09-20
Sellers, Robert (Department: 1712)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C523S466000, C523S468000, C525S481000, C525S523000, C528S089000, C528S337000
Reexamination Certificate
active
06946421
ABSTRACT:
This invention provides a latent catalyst having a structure of phosphonium borate consisting of a monovalent cation portion in which four specific groups are bonded to the phosphorus atom and a monovalent anion portion in which four specific groups are bonded to the boron atom, and a latent catalyst having a structure wherein the above phosphonium borate is the recurring unit and at least two of said recurring unit are connected through at least one of the four specific groups bonded to the boron atom. This invention also provides a thermo-setting resin composition comprising such a latent catalyst and an epoxy resin molding material comprising such a latent catalyst and further provides a semiconductor device in which a semiconductor is encapsulated with said epoxy resin molding material.
REFERENCES:
patent: 4414079 (1983-11-01), Yamataka et al.
patent: 5221761 (1993-06-01), Jen et al.
patent: 6306792 (2001-10-01), Miyake et al.
patent: 6524989 (2003-02-01), Miyake et al.
patent: 7-242683 (1995-09-01), None
patent: 8-269167 (1996-01-01), None
patent: 8-196911 (1996-08-01), None
patent: 8-295721 (1996-11-01), None
patent: 9-124768 (1997-05-01), None
patent: 9-124905 (1997-05-01), None
patent: 9-124906 (1997-05-01), None
patent: 9-176283 (1997-07-01), None
patent: 2-208669 (1997-08-01), None
patent: 9-328535 (1997-12-01), None
patent: 10-45873 (1998-02-01), None
patent: 11-5829 (1999-01-01), None
Chemical abstracts accession No. 1999:407163 for Japanese Patent No. 11-171980, Sumitomo Bakelite Company, Limited, Jun. 29, 1999.
Go Yoshiyuki
Honda Hiromi
Kobayashi Minoru
Miyake Sumiya
Nagata Hiroshi
Sellers Robert
Smith , Gambrell & Russell, LLP
Sumitomo Bakelite Company Limited
LandOfFree
Latent catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Latent catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Latent catalyst will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3451287