Polyurethanes prepared from amide linkages-containing diamine ch

Details Polyurethanes prepared from amide linkages-containing diamine ch Polyurethanes prepared from amide linkages-containing diamine ch

1995-09-29

1998-11-10

Gorr, Rachel

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 64, 528 67, C08G 1810

Patent

active

058345809

ABSTRACT:
Polyurethane elastic products prepared by a two-stage process are disclosed. In the first stage, polyols are reacted with diisocyanates to form prepolymers. The prepolymers are then reacted with diamine chain extenders which contain amide linkages, to form polyurethane elastic products.

REFERENCES:
patent: 2164787 (1939-07-01), Rossander
patent: 2929804 (1960-03-01), Steuber
patent: 3475377 (1969-10-01), Rosendahl
patent: 3632536 (1972-01-01), Iwakura

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