Foamed thermoplastic polyurethanes

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

Reexamination Certificate

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C521S051000, C521S056000, C521S058000, C521S099000, C521S113000, C521S128000, C521S130000, C521S170000, C521S172000, C521S173000, C521S174000, C523S218000, C525S457000, C525S458000

Reexamination Certificate

active

09890067

ABSTRACT:
Process for the preparation of foamed thermoplastic polyurethanes characterized in that the foaming of the thermoplastic polyurethane is carried out in the presence of thermally expandable microspheres.

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English Abstracts of JP 09 157427, Jun. 17, 1997.

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