Process for the manufacture of poly-epsilon-caprolactones and po

Details Process for the manufacture of poly-epsilon-caprolactones and po Process for the manufacture of poly-epsilon-caprolactones and po

1994-04-29

1995-11-21

Dodson, Shelley A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528354, 528361, C08G 6308

Patent

active

054688370

ABSTRACT:
The poly-.epsilon.-caprolactones are manufactured by continuous polymerization of .epsilon.-caprolactone as a melt in an extruder (reactive extrusion) with the involvement of a polymerization initiator chosen from aluminum alkoxides. The appropriate adjustment of the extruder feed rates of .epsilon.-caprolactone and of aluminum alkoxide allows the customized manufacture of poly-.epsilon.-caprolactones which have high and preestablished weight-average molecular masses.
Poly-.epsilon.-caprolactones obtainabled by the process are characterized by weight-average molecular masses (M.sub.w) equal to at least approximately 95,000 g/mol and M.sub.w /M.sub.n ratios of at least approximately 2.

REFERENCES:
patent: 3021313 (1962-02-01), Cox et al.
patent: 4090996 (1978-05-01), Gergen et al.
Macromolecules, vol. 21, No. 2, 1988, Easton US, pp. 286-293. Hans R. Kricheldorf et al.: "Poly(lactones). Polymerization Mechanism of Metal Alkoxide Initiated Polymerizations of Lactide and Various Lactones".

Affiliated with

Also associated with

Rating

Process for the manufacture of poly-epsilon-caprolactones and po 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 the manufacture of poly-epsilon-caprolactones and po, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of poly-epsilon-caprolactones and po will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1138109