Show metadata Hide metadata

(19)

(11)

2 608 738

(13)

(51)

IPC

C08F10/06(2006-01-01)

C08F2/34(2006-01-01)

(21) (22)

Application

2014103031, 2012-06-14

(24)

Start date

2012-06-14

(22)

Actual filing date

2012-06-14

(45)

Published

2017-01-23

(72)

Inventor

Tsaj PinVan Egmond Yan V.Fedek Mettyu Dzh.Goud Dzheffri D.Bredi Robert S.Chen Linfen

(73)

Holder

U.R.Grejs End Ko.-Konn.

IMPROVED METHOD OF GAS-PHASE POLYMERIZATION, INCLUDING POLYMER LAYER HIGH VOLUMETRIC DENSITY Russian patent published in 2017 - IPC C08F10/06 C08F2/34

Abstract RU 2608738 C2

FIELD: technological processes.

SUBSTANCE: invention relates to improved method of gas-phase olefin polymerization, having relatively high polymer layer apparent density. Described is propylene polymerization method in direct flow gas-core reactor in presence of catalyst composition and mixed external electron-donating system. First external electrons donor is carboxylate compound. Gas-core reactor contains polymer layer with fluidization layer volumetric density of 128 kg/m³. Reduced gas flow rate in gas-core reactor is in 10 times less than minimum fluidization rate. Volume fraction of solid substance in gas-solid substance system exceeds value of 0.17.

EFFECT: preventing local overheating in reactor, which can be related to polymer particles agglomeration or formation of lumps, due to application of new external electron-donating system.

14 cl, 1 tbl, 4 ex

Similar patents RU2608738C2

Title	Year	Author	Number
GAS-PHASE POLYMERISATION METHOD HAVING MULTIPLE FLOW MODES	2010	Tsaj Pin Chehn' Lin'Fehn Van Ehgmond Jan V. Tilston Majkl V.	RU2519752C2
SELF-LIMITING CATALYST SYSTEM WITH CONTROLLED ALUMINIUM TO SCA RATIO AND METHOD	2008	Chehn' Lin'Fehn Kehmpbell Richard Eh. Van Ehgmond Jan V.	RU2470947C2
PROPYLENE-BASED POLYMER WITH REDUCED HIGH-MOLECULAR WEIGHT PART	2014	Kaarto, Dzhon, K. Van Egmond, Yan, V. Lester, Charlz, D.	RU2702633C1
OBTAINING PROPYLENE-BASED POLYMERS WITH HIGH CONTENT OF COMONOMER	2014	Tsaj Pin Van Egmond Yan V. Goud Dzheffri D. Fedek Mettyu Dzh. Chou Chaj-Dzing	RU2731442C2
HIGH MELT FLOW RATE, IMPACT-RESISTANT PROPYLENE COPOLYMER AND METHOD FOR PRODUCTION THEREOF	2009	Chehn' Lin'Fehn Goud Dzheffri D. Shehrd Uill'Jam Dzh.	RU2487897C2
DICARBONATE COMPOUNDS WITH TWO BRIDGING ATOMS AS INTERNAL DONORS IN CATALYSTS FOR POLYPROPYLENE PRODUCTION	2010	Koulter Dzhozef N. Iii Leung Tak V. Tao Tao Gao Kuantsjan	RU2576519C2
THREE AND FOUR ATOM-BRIDGED DICARBONATE COMPOUNDS AS INTERNAL DONORS IN CATALYSTS FOR PRODUCING POLYPROPYLENE	2010	Koluter Iii Dzhozef N. Leung Tak V. Tao Tao Gao Kuantsjan	RU2580831C2
PROCATALYST PARTICLES AND POLYMERISATION METHOD FOR PRODUCING IMPACT RESISTANT COPOLYMERS	2014	Van Egmond Yan V.	RU2709203C1
METHOD FOR PRODUCTION OF HIGH MELT FLOW PROPYLENE-BASED POLYMER AND PRODUCTS MADE THEREFROM	2011	Chen Linfen Leung Tak V. Tao Tao Gao Kuantsyan	RU2606512C2
METHOD FOR GAS-PHASE POLYMERISATION	2008	Kai Pin V. Pehjnter Rodzher B. Van Ehgmond Jan V.	RU2472810C2

RU 2 608 738 C2

Authors

Tsaj Pin

Van Egmond Yan V.

Fedek Mettyu Dzh.

Goud Dzheffri D.

Bredi Robert S.

Chen Linfen

Dates

2017-01-23—Published

2012-06-14—Filed