Simplified method of producing biodegradable aliphatic...

Details Simplified method of producing biodegradable aliphatic... Simplified method of producing biodegradable aliphatic...

2007-08-07

2007-08-07

Zemel, Irina S. (Department: 1711)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S295500, C528S296000, C528S300000, C528S301000, C528S302000, C428S411100, C428S480000

Reexamination Certificate

active

11059658

ABSTRACT:
A method of synthesizing biodegradable aliphatic polyesters from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, comprising a first esterification or transesterification step and a second deglycolation under vacuum step, in which the catalyst is monobutylstannoic acid both for the esterification or transesterification step and for the deglycolation under vacuum step.

REFERENCES:
patent: 4554343 (1985-11-01), Jackson, Jr. et al.
patent: 4970288 (1990-11-01), Larkin et al.
patent: 5168310 (1992-12-01), Hayashi et al.
patent: 5306787 (1994-04-01), Takiyama et al.
patent: 5473103 (1995-12-01), Domb et al.
patent: 5741882 (1998-04-01), Fujii et al.
patent: 5905046 (1999-05-01), Takeda et al.
patent: 6730724 (2004-05-01), Bastioli et al.
patent: 0 565 235 (1993-10-01), None
patent: 0 565 235 (1993-10-01), None
patent: 0 618 249 (1994-10-01), None
patent: 0 747 416 (1996-12-01), None
patent: 63218750 (1988-09-01), None
patent: WO-94/14870 (1994-07-01), None
XP-0023139602—“Synthesis and characterization of degradable copolymers of fatty diacids adn ricinoleic acid” by Shuai et al., Database Caplus Chemical Abstract Service, Columbus, OH Feb. 2, 1998. (abstract only).
Chemical Abstract for Japanese publication No. 0046982, published Apr. 23, 1979.
Chemical Abstract for Japanese publication No. 61019628, published Jan. 28, 1986.
Chemical Abstract for Japanese publication No. 09059359, published Mar. 4, 1997.

Affiliated with

Also associated with

Rating

Simplified method of producing biodegradable aliphatic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Simplified method of producing biodegradable aliphatic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simplified method of producing biodegradable aliphatic... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3883459