US4861848A
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Polymerization of unsaturated hydrocarbons with an induction period
Assignee: Societe National Elf Aquitaine
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Filing: 1987-08-21
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Granted: 1989-08-29
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Expires: 2007-08-21
Abstract
Abstract Process of polymerization of unsaturated hydrocarbons, with an initial induction period, by means of a catalyst constituted by a halogeno-phenate of tungsten, of which the phenate group carries one or more substituents, in the presence of an organometallic co-catalyst; the halogeno-phenate is chosen from amongst those represented by the formula ##STR1## where X is a halogen, especially Cl or Br, n is a whole number 2, 3 or 4, R 1 is H or a C 1 to C 8 straight- or branched-chain alkoxy group, R 2 is H or a C 3 to C 9 branched-chain alkyl group, R 1 and R 2 never being hydrogen simultaneously.
Inventors
- 👤 Jean-Marie Basset
- 👤 Michel Leconte
- 👤 Jean Ollivier
- 👤 Francoise Quignard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:13
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
118 words
A process of polymerisation of dicyclopentadiene by reaction injection molding, with an initial induction period comprising, in the absence of a polymerisation moderator, combining in a mold dicyclopentadiene, a catalyst of the formula ##STR12## where X is Cl or Br, n is 2 to 4, R 1 is H or an alkoxy group and R 2 is H or a branched C 3 to C 9 alkyl, and an organoaluminum co-catalyst, wherein (a) R 1 is a C 1 to C 8 alkoxy group, the R 2 s are H and n=2 or 3, or (b) R 1 is H, the R 2 s are branched C 3 to C 9 alkyls, and n is 3 or 4.
Claim 2
Dependent Claim
118 words
A process of polymerisation of dicyclopentadiene by reaction injection molding, with an initial induction period comprising, in the absence of a polymerisation moderator, combining in a mold dicyclopentadiene, a catalyst of the formula ##STR12## where X is Cl or Br, n is 2 to 4, R 1 is H or an alkoxy group and R 2 is H or a branched C 3 to C 9 alkyl, and an organoaluminum co-catalyst, wherein (a) R 1 is a C 1 to C 8 alkoxy group, the R 2 s are H and n=2 or 3, or (b) R 1 is H, the R 2 s are branched C 3 to C 9 alkyls, and n is 3 or 4.
Claim 3
Dependent Claim
27 words
Process according to claim 1, characterised in that R 1 is an alkoxy --O--(CH 2 ) m --CH 3 , with m ranging from 0 to 7.
Claim 4
Dependent Claim
45 words
Process according to claim 1, characterised in that R 1 is an alkoxy of the type ##STR13## where n 1 , n 2 and n 3 are whole numbers, equal or different, ranging from 0 to 5 with 0≦n 1 +n 2 +n 3 ≦5.
Claim 5
Dependent Claim
48 words
Process according to claim 1, characterised in that R 1 is an alkoxy of the type ##STR14## where n 1 , n 2 , n 3 and n 4 are whole numbers from 0 to 4 satisfying the condition 0≦n 1 +n 2 +n 3 +n 4 ≦4.
Claim 6
Dependent Claim
17 words
Process according to claim 1, characterised in that R 2 is isopropyl, isobutyl, tert-butyl, iso-amyl or tert-amyl.
Claim 7
Dependent Claim
41 words
Process according to claim 1, characterised in that R 2 is ##STR15## n 1 , n 2 and n 3 designating whole numbers, equal or different, from 0 to 6 related by the relationship 0≦n 1 +n 2 +n 3 ≦6.
Claim 8
Dependent Claim
47 words
Process according to claim 1, characterised in that R 2 is ##STR16## where n 1 , n 2 , n 3 and n 4 , whole numbers, equal or different, range from 0 to 5, satisfy the condition 0≦n 1 +n 2 +n 3 +n 4 ≦5.
Claim 9
Dependent Claim
19 words
Process according to claim 1, characterised in that the two branched alkyls R 2 are different from each other.
Claim 10
Dependent Claim
23 words
Process according to claim 1, characterised in that the induction period, before commencement of the rapid polymerisation, is from 1 to 20 min.
Claim 11
Dependent Claim
38 words
Process according to claim 1, characterised in that the catalyst and the co-catalyst are first added to the dicyclopentadiene in a mixing zone and that the mixture is then transferred into the mold where the polymerisation takes place.
Claim 12
Dependent Claim
34 words
Process according to claim 10, characterised in that the catalyst is trichloro tris (2,6-diisopropylphenate) of tungsten and the co-catalyst is C 2 H 5 AlCl 2 or (C 2 H 5 ) 2 AlCl.
Claim 13
Dependent Claim
35 words
Process according to claim 10, characterised in that the catalyst is dichloro tetrakis (4-methoxy phenate) of tungsten and the co-catalyst is C 2 H 5 AlCl 2 or (C 2 H 5 ) 2 AlCl.
Claim 14
Dependent Claim
16 words
Process according to claim 2 characterized in that R 1 is methoxy, ethoxy, propoxy or butoxy.
Claim 15
Dependent Claim
16 words
Process according to claim 1 characterized in that R 2 is H and n is 2.
Claim 16
Dependent Claim
16 words
Process according to claim 1 characterized in that R 2 is alkyl and n is 3.
Claim 17
Dependent Claim
28 words
Process according to claim 1 characterized in that the molar ratio of dicyclopentadiene/catalyst is between 100 and 20,000 and the cocatalyst/catalyst molar ratio is from 6 to 24.
Claim 18
Dependent Claim
16 words
Process according to claim 16 characterized in that R 2 is H and n is 2.
Claim 19
Dependent Claim
16 words
Process according to claim 16 characterized in that R 2 is alkyl and n is 3.
Claim 20
Dependent Claim
34 words
Process according to claim 16, characterized in that the catalyst is trichloro tris (2,6-diisopropylphenate) of tungsten and the co-catalyst is C 2 H 5 AlCl 2 or (C 2 H 5 ) 2 AlCl.
Claim 21
Dependent Claim
35 words
Process according to claim 16, characterized in that the catalyst is dichloro tetrakis (4-methoxy phenate) of tungsten and the co-catalyst is C 2 H 5 AlCl 2 or (C 2 H 5 ) 2 AlCl.
Claim 22
Dependent Claim
14 words
Process according to claim 9 wherein said induction period is 5 to 10 minutes.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |