GB1020766A - Separating poly(ª‡-monoolefines) from solutions of the same - Google Patents

Separating poly(ª‡-monoolefines) from solutions of the same

Info

Publication number
GB1020766A
GB1020766A GB47079/62A GB4707962A GB1020766A GB 1020766 A GB1020766 A GB 1020766A GB 47079/62 A GB47079/62 A GB 47079/62A GB 4707962 A GB4707962 A GB 4707962A GB 1020766 A GB1020766 A GB 1020766A
Authority
GB
United Kingdom
Prior art keywords
poly
solvent
mono
olefine
temperature
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
GB47079/62A
Inventor
Reinhard Billet
Manfred Haeberle
Hans Lautenschlager
Hans-Georg Trieschmann
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1020766A publication Critical patent/GB1020766A/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
    • C08F6/06—Treatment of polymer solutions
    • C08F6/12—Separation of polymers from solutions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers

Abstract

Poly-(a -mono-olefines) are separated from solutions containing 1 to 20% by weight of the polyolefine dissolved therein by evaporating solvent from the solution at temperatures between 30 DEG and 240 DEG C. and pressures between 1.1 and 40 atmospheres until the solution contains 50 to 80% of polyolefine, then reducing the pressure to between 760 and 10 mm. of mercury, with or without increase in temperature, and removing the solvent thereby vaporized. Preferably, if the initial solution contains 1 to 15% of poly-(a -mono-olefine), the solvent is evaporated in two or more evaporators up to a poly-(a -mono-olefine) content of 50 to 80% by weight. In the first evaporator the solvent is preferably evaporated at temperatures of 10 DEG to 20 DEG C. above the solubility temperature of the poly-(a -mono-olefine) in the solvent used, and the boiling temperature in the second evaporator is preferably higher. The solvents used are linear or branched aliphatic, cycloaliphatic or aromatic hydrocarbons having boiling points at standard pressure of 35 DEG to 220 DEG C. such as pentane, hexane, heptane, octane, nonane, gasoline fractions, cyclohexane, benzene, toluene and xylene. A flow diagram is provided.
GB47079/62A 1961-12-19 1962-12-13 Separating poly(ª‡-monoolefines) from solutions of the same Expired GB1020766A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0065252 1961-12-19

Publications (1)

Publication Number Publication Date
GB1020766A true GB1020766A (en) 1966-02-23

Family

ID=6974700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47079/62A Expired GB1020766A (en) 1961-12-19 1962-12-13 Separating poly(ª‡-monoolefines) from solutions of the same

Country Status (1)

Country Link
GB (1) GB1020766A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006490A1 (en) * 1978-06-15 1980-01-09 Hoechst Aktiengesellschaft Process for the recuperation of unreacted propylene in bulk polymerization

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006490A1 (en) * 1978-06-15 1980-01-09 Hoechst Aktiengesellschaft Process for the recuperation of unreacted propylene in bulk polymerization

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