4,4′-biphenol polysulfone compositions, process to...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C524S135000, C524S147000, C524S148000, C524S149000, C524S145000, C524S150000, C524S151000, C524S152000, C524S153000

Reexamination Certificate

active

08048945

ABSTRACT:
4,4′-Biphenol polysulfone composition comprising:as main ingredient, at least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting 4,4′-biphenol with at least one sulfone monomer SM1(Bo1PSU),more than 0.01% by weight, based on the total weight of the composition, of at least one phosphorus-containing compound chosen from organic phosphites and organic phosphonites, andat least one polysulfone comprising more than 50 mol. % of recurring units formed by reacting bisphenol A with at least one sulfone monomer SM2(Bo1A PSU).4,4′-Biphenol polysulfone composition containing at least 60% by weight, based on the total weight of the 4,4′-biphenol polysulfone composition, of at least one Bo1PSU, said composition having a melt viscosity ratio at 410° C. and at a shear rate of 50 s−1(VR40) of below 1.20.Process which is especially well-suited to prepare the above compositions.Articles made from the above compositions or prepared by the above process.

REFERENCES:
patent: 3755266 (1973-08-01), Matzner et al.
patent: 4902836 (1990-02-01), Kissinger
patent: 5086130 (1992-02-01), Dickinson et al.
patent: 5164466 (1992-11-01), El-Hibri et al.
patent: 5910560 (1999-06-01), Nagashima et al.
patent: 6329493 (2001-12-01), El-Hibri et al.
patent: 6593485 (2003-07-01), Stoll et al.
patent: 2002/0017743 (2002-02-01), Priedeman, Jr.
patent: 3419376 (1985-11-01), None
patent: 1 398 133 (1975-06-01), None
patent: 2 283 490 (1995-05-01), None
patent: 07-179758 (1995-07-01), None
patent: 11-035705 (1999-02-01), None
patent: 952923 (1982-08-01), None
patent: WO 01/21699 (2001-03-01), None
patent: 03/089520 (2003-10-01), None
patent: WO 03/089519 (2003-10-01), None
Database WPI, Section Ch. Week 199916, Derwent Publications Ltd., London, GB; AN 1999-186388 XP002397498 and JP 11 035705 (Feb. 9, 1999). Abstract.
Database WPI, Section Ch. Week 199537, Derwent Publications Ltd., London, GB; AN 1995-281108 XP002397499 and JP 07 179758 (Jul. 18, 1995). Abstract.
John Murphy, “Additives for Plastics Handbook”, 2ndEdition, Elsevier Advanced Technology, 2001.
Chemical Additives for the Plastics Industry, Properties, Applications, Toxicologies; by Radian Corporation, McLean, Virginia; 1987.
Charles A. Harper, “Modern Plastics”, Modern Plastics Handbook, 2000.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

4,4′-biphenol polysulfone compositions, process to... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with 4,4′-biphenol polysulfone compositions, process to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 4,4′-biphenol polysulfone compositions, process to... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4256094

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.