Novel polyamides from ketene-aminals

Details Novel polyamides from ketene-aminals Novel polyamides from ketene-aminals

1981-08-14

1982-07-06

Cockeram, H. S.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

2643281, 528 71, 528 75, 528310, 528327, C08G 1832, C08G 1838, C08G 6908

Patent

active

043384285

ABSTRACT:
Novel polyketene-aminal polyamides are disclosed which have the following recurring unit ##STR1## wherein R is a divalent hydrocarbon radical, R.sub.1, R.sub.2, R.sub.3, and R.sub.4 when taken separately are independently selected from the group consisting of lower alkyl, aralkyl, and cycloalkyl, and when taken together as R.sub.1 with R.sub.2 and R.sub.3 with R.sub.4 with the respective nitrogen atoms to which they are attached represent independently a heterocyclic group having from 5 to 7 ring atoms.
The polyamides are prepared by reacting together the appropriate diisocyanate [R(NCO).sub.2 ] and appropriate ketene-aminal to form the polymer directly without the evolution of any by-products or volatiles.
The novel polymers are thermoplastic and can be formed or shaped using any of the techniques known to those skilled in the thermoplastic polymer art.

REFERENCES:
patent: 2743247 (1956-04-01), Lotz
patent: 4027059 (1977-05-01), Koons
patent: 4069211 (1978-01-01), Nishita et al.
Journal of Organic Chem., 29, 2932 (1964), D. H. Clemens et al.

Affiliated with

Also associated with

Rating

Novel polyamides from ketene-aminals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Novel polyamides from ketene-aminals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Novel polyamides from ketene-aminals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2169444