GB1055308A - Improvements in and relating to a process for the production of polyolefins - Google Patents

Improvements in and relating to a process for the production of polyolefins

Info

Publication number
GB1055308A
GB1055308A GB3680763A GB3680763A GB1055308A GB 1055308 A GB1055308 A GB 1055308A GB 3680763 A GB3680763 A GB 3680763A GB 3680763 A GB3680763 A GB 3680763A GB 1055308 A GB1055308 A GB 1055308A
Authority
GB
United Kingdom
Prior art keywords
atmosphere
pressure
polyolefins
relating
production
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3680763A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scholven Chemie AG
Original Assignee
Scholven Chemie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scholven Chemie AG filed Critical Scholven Chemie AG
Publication of GB1055308A publication Critical patent/GB1055308A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F6/00—Post-polymerisation treatments
    • C08F6/008—Treatment of solid polymer wetted by water or organic solvents, e.g. coagulum, filter cakes

Abstract

Polyolefins prepared by "low-pressure" methods and after removal of catalyst residues, are rendered odourless and tasteless by drying them in contact with an atmosphere which contains less than 500 p.p.m. of free oxygen and at a temperature below the melting-point of the polyolefin. In the example, pulverulent polypropylene, in a damp condition after separation of the washing alcohol and stabilization with known stabilizers, was dried for 5 hours in a vacuum drier at 80 DEG to 85 DEG C. at a pressure of 0.1 to 0.2 atmosphere of nitrogen containing less than 1 p.p.m. of oxygen.
GB3680763A 1962-10-18 1963-09-18 Improvements in and relating to a process for the production of polyolefins Expired GB1055308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC032196 1962-10-18

Publications (1)

Publication Number Publication Date
GB1055308A true GB1055308A (en) 1967-01-18

Family

ID=7432356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3680763A Expired GB1055308A (en) 1962-10-18 1963-09-18 Improvements in and relating to a process for the production of polyolefins

Country Status (5)

Country Link
BE (1) BE637892A (en)
DE (1) DE1520915A1 (en)
GB (1) GB1055308A (en)
LU (1) LU44485A1 (en)
NL (1) NL139332B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5681629A (en) * 1993-12-02 1997-10-28 Solvay (Societe Anonyme) Process for the manufacture of an article comprising a surface treatment step in the substantial absence of oxygen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1008466A3 (en) * 1994-03-21 1996-05-07 Solvay Method for the production of an item comprising a surface treatment step inthe substantial absence of oxygen.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5681629A (en) * 1993-12-02 1997-10-28 Solvay (Societe Anonyme) Process for the manufacture of an article comprising a surface treatment step in the substantial absence of oxygen

Also Published As

Publication number Publication date
BE637892A (en)
NL139332B (en) 1973-07-16
NL297306A (en)
DE1520915A1 (en) 1969-06-19
LU44485A1 (en) 1963-11-23

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