L-Dpolylactide copolymers with controlled morphology

Details L-Dpolylactide copolymers with controlled morphology L-Dpolylactide copolymers with controlled morphology

1991-12-31

1993-12-14

Seidleck, James J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528354, 528357, C08G 6308

Patent

active

052704009

ABSTRACT:
Linear block copolymers are disclosed. The polymers comprise a plurality of alternating polymeric blocks of amorphous copolymers of L-lactide and D-lactide with semicrystalline blocks of either L-lactide homopolymer or D-lactide homopolymer. The molecular weight can be built up by either of two techniques. The first technique is to use a chain extending agent such as a diacyl chloride or a diisocyanate to link a plurality of the preformed block copolymers. The second technique is to polymerize additional alternating amorphous and semicrystalline onto the original alternating block copolymers.

REFERENCES:
patent: 2878236 (1959-03-01), Young et al.
patent: 3169945 (1965-02-01), Hostettler et al.
patent: 4719246 (1988-01-01), Murdoch et al.
patent: 4745160 (1988-05-01), Chruchill et al.
Leenslag, J. W., Pennings, A. J., "Makromol. Chem.," vol. 188, pp. 1809-1814 (1987).
Kohn et al., "J. Appl. Pol. Sci.," vol. 29, pp. 4265-4277 (1984).
Cohns, D., Younes, H., Maroon, G., "Polymer," vol. 28, p. 2018 (1987).
Dunsing, R., Kircheldorf, H. R., "Polymer Bulletin", vol. 14, pp. 491-495 (1985).
Keicheldorf et al., "Macromolecules", vol. 21, pp. 286-293 (1988).
Rafler, G., Dahlmann, J., "Acta. Polym.", vol. 41, No. 12, pp. 611-617 (1990).
Kricheldorf, H., et al., "Eur. Pol. J.", vol. 25, pp. 585-591 (1989).

Affiliated with

Also associated with

Rating

L-Dpolylactide copolymers with controlled morphology does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with L-Dpolylactide copolymers with controlled morphology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and L-Dpolylactide copolymers with controlled morphology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1706411