Isocyanate-reactive composition and process for preparing a flex

Details Isocyanate-reactive composition and process for preparing a flex Isocyanate-reactive composition and process for preparing a flex

1991-07-25

1993-01-26

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521117, 521118, 521166, 521170, 521172, 521173, 521174, 521176, 25218224, 25218226, 25218227, C08G 1814

Patent

active

051823101

ABSTRACT:
The present invention refers to isocyanate-reactive compositions containing hindered phenolic antioxidants having a molecular weight of at least 700. These compositions, when used to prepare flexible polyurethane foams, especially slabstock foam, provide foams which exhibit a significant reduction of scorch.

REFERENCES:
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patent: 4677154 (1987-06-01), Narayan et al.
patent: 4725636 (1988-02-01), Kausch et al.
G. L. Statton et al., "Evaluation of Hindered Phenols for Minimization of Foam Discoloration Using the Microwave Scorch Test", J. Cell. Plastics, Sep./Oct. 1984.

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