Method of producing polishing pad-use polyurethane foam and...

Details Method of producing polishing pad-use polyurethane foam and... Method of producing polishing pad-use polyurethane foam and...

2002-05-07

2008-11-25

Cooney, John (Department: 1796)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

C264S041000, C264S176100, C264S212000, C425S00400R, C521S079000, C521S155000, C521S170000

Reexamination Certificate

active

07455799

ABSTRACT:
A production method comprising the step of charging prepolymer, a foaming agent and an active hydrogen-containing compound in specified amounts into a tank and foaming/mixing them for a specified time by a mixer, and the subsequent step of pouring the mixture liquid into a metal mold.

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