Process for preparing resorbable polyesters by bulk...

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid reactant and means charging solids into – or...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C422S129000, C422S131000, C422S134000, C422S138000, C422S141000, C422S142000, C422S146000, C422S198000, C422S292000, C528S171000, C528S354000, C528S359000, C528S419000, C526S064000, C526S072000, C526S075000, C526S088000

Reexamination Certificate

active

07842261

ABSTRACT:
The invention pertains to a process for preparing resorbable polyesters by bulk polymerization, wherein the reaction components are melted and homogenized in a reactor, the reaction mixture is then transferred into a polymerization reactor having a lumen defined by a reaction wall, wherein said reactor wall comprises at least two components which are releasably fitted to each other and wherein the shortest distance of any point within said lumen to the reaction wall is less than 8 cm, the reaction mixture is polymerized and the resulting polymer is removed from the polymerization reactor by releasing the components of the reactor wall exposing the resulting polymer lengthwise. The invention further relates to a polymerization reactor having a lumen defined by a reaction wall for performing said process.

REFERENCES:
patent: 3140917 (1964-07-01), Klein
patent: 4539981 (1985-09-01), Tunc
patent: 4550449 (1985-11-01), Tunc
patent: 6723826 (2004-04-01), Yamaguchi et al.
patent: 7057007 (2006-06-01), Nakamoto et al.
patent: 7087204 (2006-08-01), Kawano et al.
patent: 7256250 (2007-08-01), Tuominen et al.
patent: 2004/0167297 (2004-08-01), Kommareddi et al.
patent: 2004/0230026 (2004-11-01), Yamane et al.
patent: 1 028 832 (2005-06-01), None
patent: WO 02/100532 (2002-12-01), None
patent: WO 03/006526 (2003-01-01), None
patent: WO 03/057756 (2003-07-01), None
J. Nieuwenhuis, “Synthesis of Polylactides, Polyglycolides and Their Copolymers,” Clinical Materials, vol. 10, pp. 59-67, 1992.
J. Leenslag et al., “Synthesis of High-Molecular-Weight Poly(L-Lactide) Initiated with Tin 2-Ethylhexanoate,” Makromol. Chem., vol. 188, pp. 1809-1814, 1987.
Foreign Office Action from European Patent Office, mailed Jan. 12, 2009.
International Search Report, mailed Jul. 4, 2006.

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

Process for preparing resorbable polyesters by bulk... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing resorbable polyesters by bulk..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing resorbable polyesters by bulk... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4234707

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