Trimodal molecular weight polyether polyol prepolymers

Details Trimodal molecular weight polyether polyol prepolymers Trimodal molecular weight polyether polyol prepolymers

1995-11-17

1997-08-05

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...

25218222, 528 64, 528 76, C08G 1848

Patent

active

056543905

ABSTRACT:
A trimodal molecular weight toluene diisocyanate endcapped polyether polyol prepolymer is disclosed having free toluene diisocyanate below 0.5 weight percent where the three molecular weight polyols used are 300-800, 800 to 1500 and 1500-10000. Processes to make and use these prepolymers as polyurethane castable elastomers having exceptionally long flex fatigue lives using environmentally friendly materials essentially free of TDI are also disclosed.

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patent: 4182825 (1980-01-01), Jackle
patent: 4786703 (1988-11-01), Starner
patent: 4934425 (1990-06-01), Gajewski et al.
patent: 5223599 (1993-06-01), Gajewski et al.

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