Tris-tetrazoles as chemical blowing agents

Details Tris-tetrazoles as chemical blowing agents Tris-tetrazoles as chemical blowing agents

1978-09-11

1979-06-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521143, 521146, 521180, 521182, 521184, 521185, 521189, 554222, C08J 910, C07D25104

Patent

active

041587243

ABSTRACT:
Tris-tetrazoles of formula I, ##STR1## wherein A is alkylene and R is hydrogen, alkyl or phenyl, are suitable blowing agents for thermoplastic resins, especially for polycarbonates and aromatic polyethers. The foaming process can be carried out at a temperature range of 230.degree. to 300.degree. C., the resulting foamed articles have a fine and homogeneous cellular structure.
The tris-tetrazoles I can be synthesized from the corresponding tris-nitriles or tris-imidchlorides by reaction with an alkali azide.

REFERENCES:
patent: 3442829 (1969-05-01), Moore et al.
patent: 3873477 (1975-03-01), Beck et al.

Affiliated with

Also associated with

Rating

Tris-tetrazoles as chemical blowing agents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tris-tetrazoles as chemical blowing agents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tris-tetrazoles as chemical blowing agents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-56650