Weak bronsted acid derivatives for improving dimensional stabili

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521113, 521130, 521131, 521155, 521158, 521170, 521172, 521174, C08J 904

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active

061368768

ABSTRACT:
A method for preparing a flexible polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises an active methylene- or methine-group containing compound.

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patent: 5852065 (1998-12-01), Frey et al.
"The ICI Polyurethanes Book", Second Edition, John Wiley & Sons, (1990).
"Air Products Polyurethane Additives" wallchart (1998).

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