Process for stabilizing thermoplastic polyurethanes and stabiliz

Details Process for stabilizing thermoplastic polyurethanes and stabiliz Process for stabilizing thermoplastic polyurethanes and stabiliz

1977-04-04

1979-10-23

Cockeram, H. S.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 23, 528 44, C08G 1882, C08G 1883, C08J 1104

Patent

active

041721926

ABSTRACT:
Thermoplastic polyurethanes are treated in the solid particulate state with a volatile free agent selected from alcohols and amines which are reactive with NCO groups at a temperature below that at which aminolysis or alcoholysis of urethane groups takes place, continuing the treatment until the reagent is substantially diffused throughout the polyurethane, and then pulling a vacuum on the treated polyurethane to remove any unreacted reagent.

REFERENCES:
patent: 2702797 (1955-02-01), Rugg
patent: 2917486 (1959-12-01), Nelson et al.
patent: 2944998 (1960-07-01), Buxbaum
patent: 3192185 (1965-06-01), Achterhof et al.
patent: 3210272 (1965-10-01), Foster et al.
patent: 3240842 (1966-03-01), Saunders
patent: 3321433 (1967-05-01), Baumann
patent: 3332912 (1967-07-01), Rochlitz et al.
patent: 3420796 (1969-01-01), Matsubayashi et al.
patent: 3822240 (1974-07-01), Schmitt et al.
patent: 3926909 (1975-12-01), Wei
patent: 4046741 (1977-09-01), Scher

Affiliated with

Also associated with

Rating

Process for stabilizing thermoplastic polyurethanes and stabiliz does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for stabilizing thermoplastic polyurethanes and stabiliz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for stabilizing thermoplastic polyurethanes and stabiliz will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-410438