Carbon black-filled foam

Details Carbon black-filled foam Carbon black-filled foam

1988-04-18

1989-01-03

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521917, C08G 1814

Patent

active

047957638

ABSTRACT:
A closed cell, rigid, polymer foam containing as filler at least about 2 percent by weight of carbon black, based on the weight of the polymer in the foam, the carbon black being uniformly dispersed throughout the foam so that there is present in the cell walls of the foam an amount of carbon black which reduces the aged k-factor of the foam to below the aged k-factor of the corresponding unfilled foam.

REFERENCES:
patent: 3640920 (1972-02-01), Cear
patent: 4153764 (1979-05-01), Blount
patent: 4258222 (1981-03-01), Mohring et al.
patent: 4265965 (1981-05-01), Chancler
patent: 4346180 (1982-08-01), Blount
patent: 4431575 (1984-02-01), Fujie et al.
patent: 4454248 (1984-06-01), Pollock et al.
patent: 4493788 (1985-01-01), Fujie et al.
patent: 4525297 (1985-06-01), Yamane et al.
patent: 4608446 (1986-08-01), Mohring et al.
patent: 4649162 (1987-03-01), Roche et al.
Schuetz, M. Q., "Heat Transfer in Foam Insulation," M.S. Thesis, Massachusetts Institute of Technology, Dec., 1982, pp. 240-254.

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