Process for producing absorbable segmented copolymers with a sub

Details Process for producing absorbable segmented copolymers with a sub Process for producing absorbable segmented copolymers with a sub

1997-04-11

1998-12-01

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528359, 528361, 528503, 525415, C08G 6308

Patent

active

058440674

ABSTRACT:
The present invention provides a process for producing absorbable segmented copolymers of aliphatic polyesters with a uniform sequence distribution comprising copolymerizing at least two aliphatic polyester monomers wherein one of the monomers will transesterify under copolymerization conditions to form a segmented block copolymer; then quenching the copolymerization by cooling the segmented block copolymer below the temperature at which transesterification will occur in less than 60 minutes.

REFERENCES:
patent: 3636956 (1972-01-01), Schneider
patent: 3839297 (1974-10-01), Wasserman et al.
patent: 4045418 (1977-08-01), Sinclair
patent: 4057537 (1977-11-01), Sinclair
patent: 4157437 (1979-06-01), Okuzumi et al.
patent: 4300565 (1981-11-01), Rosensaft et al.
patent: 4525578 (1985-06-01), Wu et al.
patent: 4605730 (1986-08-01), Shalaby et al.
patent: 4643734 (1987-02-01), Lin
patent: 4700704 (1987-10-01), Jamiolkowski et al.
patent: 4750910 (1988-06-01), Takayanagi et al.
patent: 5133739 (1992-07-01), Bezwada et al.
patent: 5136017 (1992-08-01), Kharas et al.
patent: 5142023 (1992-08-01), Gruber et al.
patent: 5180765 (1993-01-01), Sinclair
patent: 5235031 (1993-08-01), Drysdale
patent: 5252701 (1993-10-01), Jarrett et al.
patent: 5431679 (1995-07-01), Bennett et al.
Kricheldorf et al. Macromolecules 1984, 17, 2173-81 Makromol.Chem. 188,2267-2275 (1987).

Affiliated with

Also associated with

Rating

Process for producing absorbable segmented copolymers with a sub 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 producing absorbable segmented copolymers with a sub, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing absorbable segmented copolymers with a sub will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2396518