Olefin polymerization process in the presence of antistatic composition

Patent metadata

Field	Value
Publication number	US-10604645-B2
Application number	US-201616064900-A
Country	US
Kind code	B2
Filing date	Nov 28, 2016
Priority date	Dec 21, 2015
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

b) an oligomeric or polymeric organic compound having one or more terminal hydroxyl groups and a viscosity at 40° C. of at least about 20 mm2/sec (DIN 51562).

First claim

What is claimed is:

1. A process for the preparation of polyolefins comprising the step of:
(i) polymerizing an olefin in the presence of an antistatic composition comprising:
(a) from about 0.5 to about 50% by weight, based upon the total weight of the antistatic composition, of a compound of formula R—OH wherein R represents hydrogen or a linear or branched, saturated alkyl group having from 1 to 15 carbon atoms; and
(b) from about 50 to about 99.5% by weight, based upon the total weight of the antistatic composition, of an oligomeric or polymeric organic compound having one or more terminal hydroxyl groups and a viscosity at 40° C. of 60 to about 2000 mm 2 /sec (DIN 51562),

wherein the oligomeric or polymeric organic compound (b) is an alkylene-oxide-derived polymer comprising on average from 10 to 200 repeating units —(CH 2 —CHR—O)—, with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms.

2. The process according to claim 1 , wherein the compound (a) of formula R—OH is water.

3. The process according to claim 1 , wherein the compound (a) of formula R—OH is an alcohol selected from the group consisting of methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, 1-nonanol, 1-decanol, undecan-1-ol, dodecan-1-ol, tridecan-1-ol, 1-tetradecanol, pentadecan-1-ol, isobutanol, isoamyl alcohol, 2-methyl-1-propanol, phenethyl alcohol, tryptophol, isopropanol, 2-butanol, 2-pentanol, 2-hexanol, 2-heptanol, cyclohexanol, tert-butyl alcohol, tert-amyl alcohol, 2-methyl-2-pentanol, 2-methylhexan-2-ol, 2-methylheptan-2-ol, 3-methyl-3-pentanol, and 3-methyloctan-3-ol.

4. The process according to claim 1 , wherein the oligomeric or polymeric organic compound (b) has a viscosity at 40° C. in the range of about 260 to about 285 mm 2 /sec (DIN 51562).

5. The process according to claim 1 , wherein the alkylene-oxide-derived polymer comprises on average from 12 to 200 repeating units —(CH 2 —CHR—O)—.

6. The process according to claim 5 , wherein the terminal groups of the alkylene-oxide-derived polymer are —OH groups.

7. The process according to claim 5 , wherein the alkylene-oxide-derived polymer is a random copolymer of ethylene oxide and another alkylene oxide, and the repeating units —(CH 2 —CH 2 —O) n — derived from ethylene oxide to repeating units —(CH 2 —CHR′—O) m — derived from the other alkylene oxides, with R′ being an alkyl group having from 1 to 6 carbon atoms, are present in a ratio n:min the range of from 6:1 to 1:1.

8. The process according to claim 5 , wherein the alkylene-oxide-derived polymer is a linear polymer of formula (I)
HO—(CH 2 —CH 2 —O) n —(CH 2 —CHR′—O) m —H  (I)

wherein R′ is an alkyl group having from 1 to 6 carbon atoms; n is in the range of from 10 to 180; and m is in the range of from 2 to 120.

9. The process according to claim 5 , wherein the alkylene-oxide-derived polymer is a random copolymer of ethylene oxide and propylene oxide.

10. The process according to claim 9 , wherein the ethylene oxide/propylene oxide random copolymer is a linear ethylene oxide/propylene oxide copolymer of formula (II)
HO—(CH 2 —CH 2 —O) n —(CH 2 —CH(CH 3 )—O) m —H  (II)

wherein n is in the range of from 10 to 180 and m is in the range of from 2 to 120.

11. An antistatic composition comprising:
(a) from about 0.5 to about 50% by weight, based upon the total weight of the antistatic composition, of a compound of formula R—OH wherein R represents hydrogen or a linear or branched, saturated alkyl group having from 1 to 15 carbon atoms; and
(b) from about 50 to about 99.5% by weight, based upon the total weight of the antistatic composition, of an oligomeric or polymeric organic compound having one or more terminal hydroxyl groups and a viscosity at 40° C. of 60 to about 2000 mm 2 /sec (DIN 51562)

wherein the oligomeric or polymeric organic compound (b) is an alkylene-oxide-derived polymer comprising on average from 10 to 200 repeating units —(CH 2 —CHR—O)—, with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms.

12. The antistatic composition according to claim 11 , wherein the compound (a) of formula R—OH is water.

13. The antistatic composition according to claim 11 , wherein the oligomeric or polymeric organic compound (b) is a linear ethylene oxide/propylene oxide copolymer of formula (II)
HO—(CH 2 —CH 2 —O) n —(CH 2 —CH(CH 3 )—O) m —H   (II)

wherein n is in the range of from 10 to 180 and m is in the range of from 2 to 120.

Assignees

• Basell Poliolefine Italia Srl

Inventors

• Mazzucco Antonio
• Mei Gabriele
• Caputo Tiziana
• Pantaleoni Roberto
• Balestra Enrico
• Di Diego Maria
• Destro Mara
• Rinaldi Riccardo

Classifications

• C08F2/44 Primary

  Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers · CPC title

• C08K2201/017

  Additives being an antistatic agent · CPC title

• C08K5/053

  Polyhydroxylic alcohols · CPC title

• C08L23/12 Primary

  Polypropene · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title