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...
Patent
1984-02-09
1984-11-13
Welsh, Maurice J.
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...
528 76, 528 77, 528 81, 528 83, C08G 1838
Patent
active
044826907
ABSTRACT:
This invention pertains to the manufacture of polyurethane-urea elastomers formed by reacting a prepolymer of an organic polyisocyanate and a compound having at least two Zerewitenoff active hydrogen atoms with a chain extender comprising t-butylbenzenediamine. The utilization of t-butylbenzenediamine as an aromatic diamine chain extender imparts flexibility in the handling of reactable compositions due to an increase in pot life and imparts excellent tensile modulus to the resulting polymer.
REFERENCES:
patent: 3285879 (1966-11-01), Larson et al.
patent: 3428610 (1969-02-01), Klebert
patent: 3736350 (1973-05-01), Meckel et al.
patent: 3846351 (1974-11-01), Huffaker et al.
patent: 4133943 (1979-01-01), Blahak et al.
patent: 4218543 (1980-08-01), Weber et al.
patent: 4222955 (1980-09-01), Chung et al.
Preparation and Construction of Some Tert-Butyl-Acetylamino-Nitrobenzenes-Biekart, et al., Rec. Trao. Chim. 71, 321-339, (1952).
Air Products and Chemicals Inc.
Brewer R. L.
Innis E. E.
Simmons J. C.
Welsh Maurice J.
LandOfFree
Process for the production of polyurethane urea elastomers 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 the production of polyurethane urea elastomers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of polyurethane urea elastomers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2361605