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公开(公告)号：AU529574B2
公开(公告)日：1983-06-09
申请号：AU5505980
申请日：1980-01-30
Applicant: HOECHST AG
Inventor： KAISER KARL , WILLMS ROBERT , KUXDORF BERNHARD
Abstract: The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsifier-containing solution having a surface tension at 20 DEG C. of about 50 to 60 dynes/cm with respect to air; stirring the resulting mixture and converting it to a homogeneous dispersion, the aqueous dispersion containing about 10 to 40 weight % of the polyolefin; B. introducing the dispersion into the upper portion of a column provided with 5 to 30 sieve plates and overflow weirs and contacting the dispersion in countercurrent fashion with steam of about 100 DEG to 120 DEG C.
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公开(公告)号：DE3105404A1
公开(公告)日：1982-09-02
申请号：DE3105404
申请日：1981-02-14
Applicant: HOECHST AG
Inventor： CHORODNIK ALEXANDER DIPL CHEM , KEUPER HANS WALTER DIPL CHEM D , SEMMLER HORST DIPL ING DR , HARDEL JOACHIM , VIERLING HERMANN , WILLMS ROBERT
Abstract: The disclosure relates to a process for making fine particulate, non-agglomerating chloropolyethylene by subjecting pulverulent polyethylene to a chlorination reaction in aqueous or aqueous/hydrochloric acid-suspension with chlorine gas at a temperature of about 20 DEG to 140 DEG C. in the presence of silicic acid and silicon oil, separating, washing and drying the chloropolyethylene. More particularly, the disclosure provides for the chlorination to be terminated and for the aqueous hydrochloric acid-suspension of chloropolyethylene to be then intensively mixed with an aqueous or aqueous/hydrochloric acid-dispersion having talc as well as an orthophosphoric acid mono- and/or diester or a polysiloxane by means of an emulsifier dispersed in it, and for the chloropolyethylene to be separated from the mixture, to be washed and dried.
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公开(公告)号：AU5505980A
公开(公告)日：1980-08-07
申请号：AU5505980
申请日：1980-01-30
Applicant: HOECHST AG
Inventor： KAISER KARL , WILLMS ROBERT , KUXDORF BERNHARD
Abstract: The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsifier-containing solution having a surface tension at 20 DEG C. of about 50 to 60 dynes/cm with respect to air; stirring the resulting mixture and converting it to a homogeneous dispersion, the aqueous dispersion containing about 10 to 40 weight % of the polyolefin; B. introducing the dispersion into the upper portion of a column provided with 5 to 30 sieve plates and overflow weirs and contacting the dispersion in countercurrent fashion with steam of about 100 DEG to 120 DEG C.
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Patent Agency Ranking
公开(公告)号：DE3061698D1
公开(公告)日：1983-03-03
申请号：DE3061698
申请日：1980-01-07
Applicant: HOECHST AG
Inventor： KAISER KARL DR , WILLMS ROBERT , KUXDORF BERNHARD
Abstract: The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsifier-containing solution having a surface tension at 20 DEG C. of about 50 to 60 dynes/cm with respect to air; stirring the resulting mixture and converting it to a homogeneous dispersion, the aqueous dispersion containing about 10 to 40 weight % of the polyolefin; B. introducing the dispersion into the upper portion of a column provided with 5 to 30 sieve plates and overflow weirs and contacting the dispersion in countercurrent fashion with steam of about 100 DEG to 120 DEG C.
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公开(公告)号：DE2903586A1
公开(公告)日：1980-08-14
申请号：DE2903586
申请日：1979-01-31
Applicant: HOECHST AG
Inventor： KAISER KARL DIPL CHEM DR , WILLMS ROBERT , KUXDORF BERNHARD DIPL ING
Abstract: The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsifier-containing solution having a surface tension at 20 DEG C. of about 50 to 60 dynes/cm with respect to air; stirring the resulting mixture and converting it to a homogeneous dispersion, the aqueous dispersion containing about 10 to 40 weight % of the polyolefin; B. introducing the dispersion into the upper portion of a column provided with 5 to 30 sieve plates and overflow weirs and contacting the dispersion in countercurrent fashion with steam of about 100 DEG to 120 DEG C.
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公开(公告)号：CH599252A5
公开(公告)日：1978-05-31
申请号：CH1458975
申请日：1975-11-11
Applicant: HOECHST AG
Inventor： KAISER KARL DR , KOHLPOTH GERHARD DR , WILLMS ROBERT
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公开(公告)号：DE3260850D1
公开(公告)日：1984-11-08
申请号：DE3260850
申请日：1982-01-22
Applicant: HOECHST AG
Inventor： OHORODNIK ALEXANDER DR , KEUPER HANS WALTER DR , SEMMLER HORST DR , HARDEL JOACHIM , VIERLING HERMANN , WILLMS ROBERT
Abstract: The disclosure relates to a process for making fine particulate, non-agglomerating chloropolyethylene by subjecting pulverulent polyethylene to a chlorination reaction in aqueous or aqueous/hydrochloric acid-suspension with chlorine gas at a temperature of about 20 DEG to 140 DEG C. in the presence of silicic acid and silicon oil, separating, washing and drying the chloropolyethylene. More particularly, the disclosure provides for the chlorination to be terminated and for the aqueous hydrochloric acid-suspension of chloropolyethylene to be then intensively mixed with an aqueous or aqueous/hydrochloric acid-dispersion having talc as well as an orthophosphoric acid mono- and/or diester or a polysiloxane by means of an emulsifier dispersed in it, and for the chloropolyethylene to be separated from the mixture, to be washed and dried.
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9.发明专利
公开(公告)号：IN152262B
公开(公告)日：1983-12-03
申请号：IN114CA1980
申请日：1980-01-30
Applicant: HOECHST AG
Inventor： KAISER KARL , WILLMS ROBERT , KUXDORF BERNHARD
Abstract: The invention relates to an improved process, wherein polyolefins are freed from saturated liquid residual hydrocarbons with the aid of water and steam. The improvement comprises A. introducing the hydrocarbon-containing polyolefin into an aqueous emulsifier-containing solution having a surface tension at 20 DEG C. of about 50 to 60 dynes/cm with respect to air; stirring the resulting mixture and converting it to a homogeneous dispersion, the aqueous dispersion containing about 10 to 40 weight % of the polyolefin; B. introducing the dispersion into the upper portion of a column provided with 5 to 30 sieve plates and overflow weirs and contacting the dispersion in countercurrent fashion with steam of about 100 DEG to 120 DEG C.
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