Title: Selective addition of additives to solid polymer

Abstract: In blending additives with finely divided solid polymer, additives with melting points below the blending temperature are added first and additives with melting points above the blending temperature of the solid polymer are added subsequently.

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Inventors: Perry, Robert J. (Houston, TX, US)

Application Number: 358891
Filing Date: 1973-05-10
Publication_date: 1976-01-13
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 523/351 264/211, 524/100, 524/304, 524/305, 524/328, 524/359, 524/400
Other Classes:
US Patent Ref:

3163492	Dec, 1964	Thomas	260/23.
3380986	Apr, 1968	Vucht	260/94.
3523916	Aug, 1970	Needham et al.	260/42.
3546270	Dec, 1970	Kirchmayr	260/45.

Other Refs:
Primary Examiner: Czaja, Donald E.
Assistant Examiner: Person, S. M.
Attorney: