Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1988-08-23
1990-02-27
Robinson, Ellis P.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
428407, 428361, 428378, 428394, 428451, 428522, 428523, B32B 516, B32B 2702, B32B 2728, B32B 2714
Patent
active
049045318
ABSTRACT:
Free-flowing plural extrudates of a polar ethylene interpolymer, and method of preparing the same. The extrudates are essentially coated with about 0.001-2 percent, by weight of the composition, fumed silica, preferably about 0.025-0.05 weight percent. The fumed silica has an average primary particle size of about 5-25 millimicrons, a surface area of about 200-250 m.sup.2 /g, and is substantially amorphous and non-porous. The interpolymer has interpolymerized therein polar monomer, such as acrylic acid, n-butyl acrylate, vinyl acetate, or the like, in an amount so that the untreated extrudates have high block. The extrudates are treated by admixture with the silica or by contact with an aqueous dispersion of about 0.01-10 wt. % silica. When the interpolymer contains .alpha.,.beta.-ethylenically unsaturated carboxylic acid, the extrudates are optionally surface neutralized with a base.
REFERENCES:
patent: 2431873 (1947-12-01), Kennelly
patent: 2882254 (1969-04-01), Kloepfer et al.
patent: 3324060 (1967-06-01), Scopp et al.
patent: 3528841 (1970-09-01), Donaldson et al.
patent: 3595827 (1971-07-01), Foster
patent: 3753965 (1973-08-01), Loomey et al.
patent: 3901992 (1975-08-01), Payne et al.
patent: 3916058 (1975-10-01), Vossos
patent: 3931428 (1976-01-01), Reick
patent: 3935124 (1976-01-01), Thene et al.
patent: 3937676 (1976-02-01), Shonebarger
patent: 4129717 (1978-12-01), Praetorius et al.
patent: 4212918 (1980-07-01), Marquisee
patent: 4264554 (1981-04-01), Hale et al.
patent: 4412025 (1983-10-01), Corwin et al.
patent: 4430289 (1984-02-01), McKinney et al.
patent: 4551498 (1984-11-01), Yealer et al.
patent: 4663383 (1987-05-01), Lowe et al.
Bryce Kenneth L.
Kelly Laura A.
Robinson Ellis P.
Rucker Susan S.
The Dow Chemical Company
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