Semi-flexible foam polymer used in packaging

Details Semi-flexible foam polymer used in packaging Semi-flexible foam polymer used in packaging

1981-03-30

1983-02-22

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 464, 264 465, 264 466, 521129, 521167, 521174, 521175, 521904, 521914, C08G 1814, C08G 1848

Patent

active

043749348

ABSTRACT:
A select, low density semi-flexible foam polymer composition is prepared from a very select reaction mixture which is characterized by a foaming agent which consists essentially of water and is substantially free of fluorinated hydrocarbon compounds, and a relatively low reaction mixture NCO/OH index of from about 20 to about 70. The foam polymer composition is particularly useful in packaging fragile or shock-sensitive objects.

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patent: 3424700 (1969-01-01), Booth et al.
patent: 3507815 (1970-04-01), Bailey et al.
patent: 3726816 (1973-04-01), Fabris et al.
patent: 3865762 (1975-02-01), Repiquet et al.
patent: 3887483 (1975-06-01), Morehouse
patent: 4087389 (1978-03-01), Coppola
patent: 4087389 (1978-05-01), Coppola

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