Continuous hydrolytic preparation of polylactams

Details Continuous hydrolytic preparation of polylactams Continuous hydrolytic preparation of polylactams

1984-02-21

1985-09-03

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

526 67, 526 71, C08G 6916

Patent

active

045393915

ABSTRACT:
Polylactams are prepared continuously by a process in which a lactam containing from 1 to 25% by weight of water is heated in a prepolymerization zone under a pressure of from 1 to 10 bar at from 220.degree. to 280.degree. C. for 1 to 10 minutes, water being vaporized at the same time, with the proviso that the degree of conversion on emergence from the prepolymerization zone is not less than 85%, the prepolymer and the vapor are separated continuously, and the prepolymer is passed into a polymerization zone and is polymerized further under superatmospheric pressure at from 240.degree. to 290.degree. C.

REFERENCES:
patent: 4049638 (1977-09-01), Doerfel et al.

Affiliated with

Also associated with

Rating

Continuous hydrolytic preparation of polylactams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous hydrolytic preparation of polylactams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous hydrolytic preparation of polylactams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-614563