Production of polyamide

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C528S312000, C528S322000, C528S323000, C528S332000, C528S335000, C528S336000, C528S480000, C528S483000, C528S503000

Reexamination Certificate

active

06916901

ABSTRACT:
The present invention provides a method for the production of polyamide 6 by the hydrolytic polymerization of ε-caprolactam, in which, in the first step, caprolactam ring opening occurs under the action of water and, in the following steps, polycondensation is performed at low temperatures under anhydrous conditions.

REFERENCES:
patent: 4204049 (1980-05-01), Matthies et al.
patent: 4327208 (1982-04-01), Lehr et al.
patent: 4540774 (1985-09-01), Gerking et al.
patent: 4540779 (1985-09-01), Conrad et al.
patent: 4734263 (1988-03-01), Gerking et al.
patent: 5543495 (1996-08-01), Anolick et al.
patent: 5659009 (1997-08-01), Pipper et al.
patent: 5696227 (1997-12-01), Mumcu
patent: 6258926 (2001-07-01), Wiltzer et al.
patent: 6566487 (2003-05-01), Buijs et al.
patent: 6710159 (2004-03-01), Morhenn et al.
patent: 227 140 (1985-09-01), None
patent: 234 430 (1986-04-01), None
patent: 43 02 764 (1994-08-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Production of polyamide does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-3421347

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.