Stretched molding composed of calcium sulfite-containing polyeth

Details Stretched molding composed of calcium sulfite-containing polyeth Stretched molding composed of calcium sulfite-containing polyeth

1977-02-14

1978-11-07

Thurlow, Jeffery R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

264175, 264210R, 264288, 264289, 428910, C08F 4504

Patent

active

041245636

ABSTRACT:
A pervious sheet of a polyolefin composition containing 50-85 wt.% of an inorganic material such as calcium sulfite is disclosed. The calcium sulfite is preferably employed in the form of the crystalline semi-hydrate, with the crystals being in the rectangular form having a short axis of 1-30 .mu. and a long axis of 5-100 .mu.. Also disclosed is a method for the manufacture of these compositions.

REFERENCES:
patent: 2235531 (1941-03-01), Plumstead
patent: 3154461 (1964-10-01), Johnson
patent: 3201506 (1965-08-01), Bills
patent: 3660551 (1972-05-01), Susuki et al.
patent: 3725336 (1973-04-01), Susuki et al.
patent: 3739060 (1973-06-01), Tomiyama et al.
patent: 3825656 (1974-07-01), Murakami et al.

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