Hardener composition for the production of polyurethane shaped a

Details Hardener composition for the production of polyurethane shaped a Hardener composition for the production of polyurethane shaped a

1993-07-22

1994-08-23

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 67, 528 77, 25218225, 25218224, C08L 7500

Patent

active

053409000

ABSTRACT:
The invention relates to compositions comprising a) a polyol having on average 3 to 8 hydroxyl groups per molecule and an average molecular weight per hydroxyl group of up to 150; b) a polyether-polyol having on average 2 to 3 hydroxyl groups per molecule and an average molecular weight per hydroxyl group of 150 to 500 and c) a poly(oxyalkylene)polyamine having on average 2 to 4 amino groups per molecule and an average total molecular weight of between 1000 and 3000.
The compositions described are distinguished by a low tendency to demix, even during prolonged storage.
Reaction mixtures of the compositions described, as hardeners, and polyisocyanates of the diphenylmethane series cure fully without passing through a brittle phase. The shaped articles formed have good mechanical properties.

REFERENCES:
patent: 3267050 (1968-08-01), Kuryla et al.
patent: 3979364 (1976-09-01), Rowton
patent: 3993576 (1976-11-01), Barron
patent: 4826885 (1989-05-01), Tsai
patent: 5028684 (1991-07-01), Neuhaus et al.
patent: 5237036 (1993-08-01), Spitzer
Ullmanns Encyclopadie der technischenChemie (1980) (Ullmanns Encyclopedia of Industrial Chemistry) 4th Ed., vol. 19, pp. 31-38; pp. 304, 305.
Ullmanns Encyclopdadie der technischen Chemie, 4th Ed., vol. 19 (1980) pp. 297-299.
Kunststoffhandbuch (Plastics Handbook), vol, 7, 2nd Ed. (1983) pp. 76 & 77.
Kunststoffhandbuch, vol. 7, 2nd Ed. (1983).
Ullmanns Encyclopadie der technischen Chemie, 4th Ed., vol. 19, (1980) p. 316.

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