Novel product

Details Novel product Novel product

1988-08-15

1989-09-19

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

528 44, 528 64, 528 74, 528 76, 528 83, C08G 1832

Patent

active

048682250

ABSTRACT:
Novel meta phenylenediamines are provided having one or two particular benzyl radicals as substituents along with other optional substituents on the aromatic diamine ring and optionally substituents on the benzyl aromatic ring.
The diamines are sterically hindered and thereby have lower amine reactivity as compared with the unsubstituted diamines.
The diamines are useful as curing agents for epoxy resins and find particular utility as extenders in the formation of novel polyurethane-polyurea polymers.

REFERENCES:
patent: 3424795 (1969-01-01), Lund et al.
patent: 3428610 (1969-02-01), Klebert
patent: 3678112 (1972-07-01), Wollensak et al.
patent: 3678113 (1972-07-01), Klopfer
patent: 3862233 (1975-01-01), Dunn
patent: 4218543 (1980-08-01), Weber et al.

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