Raw materials for anti-cracking polyurethane foams and...

Details Raw materials for anti-cracking polyurethane foams and... Raw materials for anti-cracking polyurethane foams and...

2005-03-01

2005-03-01

Cooney, Jr., John M. (Department: 1711)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S130000, C521S131000, C521S167000, C521S170000, C521S172000, C521S174000, C521S176000

Reexamination Certificate

active

06861454

ABSTRACT:
Raw materials for anti-cracking polyurethane foams comprises: a mixed polyol 100 weight parts; an isocyanate 140˜180 weight parts; a catalyst 1.0˜3.0 weight parts; water 1˜2.5 weight parts; a foam blowing agent 30.0˜35.0 weight parts; and an additive 1.0˜3.0 weight parts, and a preparation method thereof.

REFERENCES:
patent: 5340916 (1994-08-01), Henn et al.
patent: 5684057 (1997-11-01), White et al.
patent: 5919395 (1999-07-01), Bastin et al.
patent: 6201033 (2001-03-01), Mercando et al.
patent: 6232356 (2001-05-01), Mercando et al.
patent: 6420446 (2002-07-01), Chang

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