Heat insulator made of shape memory polymer foam

Details Heat insulator made of shape memory polymer foam Heat insulator made of shape memory polymer foam

1989-10-18

1992-03-03

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521155, 521161, 521170, C08G 1842

Patent

active

050933841

ABSTRACT:
A heat insulator made of shape memory polymer foam which has good moldability and changes greatly in elastic modulus above and below its glass transition point, and a heat insulator as mentioned above in which the polymer foam is polyurethane produced by prepolymer process from a composition containing a blowing agent, said composition being composed of a difunctional diisocyanate, a difunctional polyol, and a difunctional chain extender containing active hydrogen in a molar ratio of 2.00-1.10:1.00:1.00-0.10, said polyurethane containing approximately equal amounts of NCO groups and OH groups at the terminals of the molecular chains and having a glass transition point of -50.degree. to 60.degree. C. and crystallinity of 3 to 50 wt %.

REFERENCES:
patent: 2927905 (1960-03-01), Eckert
patent: 3856716 (1974-12-01), Jenkins et al.
patent: 4061662 (1977-12-01), Marans et al.
patent: 4350777 (1982-09-01), Henrichs et al.
patent: 4495081 (1985-01-01), Vanderhider et al.
patent: 4990545 (1991-02-01), Hourai et al.

Affiliated with

Also associated with

Rating

Heat insulator made of shape memory polymer foam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat insulator made of shape memory polymer foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat insulator made of shape memory polymer foam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-272654