Patent EP0269948A2 successfully refreshed from Google Patents.
EP0269948A2
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EP
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Process for preparing modified polycycloolefins
Assignee: Goodrich Corp
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Filing: 1987-11-18
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Granted: —
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Expires: 2007-11-18
Abstract
Abstract Solution and RIM polymerization of cycloolefins containing at least one norbornene moiety is carried out in the presence of a metathesis catalyst system and an activator, particularly a chlorosilane activator, to obtain faster reaction with higher conversions at lower mold temperatures. The metathesis catalyst system includes an organoammonium molybdate or tungstate catalyst and an alkylaluminum or an alkylaluminum halide cocatalyst. The chlorosilane activator is used at a level of 0.05 to 10 millimoles per mole of the cycloolefin monomers.
Inventors
- 👤 Paul Thomas Stricharczuk
- 👤 Robert John Minchak
- 👤 Timothy Joseph Kettering
- 👤 Dennis Joseph Janda
- 👤 Glen Risdon Gribble, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 01:23
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
118 words
Process for preparing a polymer by ring opening polymerization comprising the step of polymerizing one or more monomers containing a norbornene group in the presence of a metathesis catalyst system and also in the presence of an effective amount of an organic halometal compound activator, wherein said norbornene group has the following structure: and wherein said organic halometal compound has the following structure: R m Y X n where m is 0 to 4 and n is 1 to 5 individually selected from hydrogen, alkenyl, alkyl, alkoxy, aryl, alkaryl and saturated and unsaturated monocyclic, dicyclic and polycyclic groups; Y is selected from tin, lead, magnesium, antimony, boron, germanium, and silicon; and X is individually selected from halogen atoms.
Claim 2
Dependent Claim
118 words
Process for preparing a polymer by ring opening polymerization comprising the step of polymerizing one or more monomers containing a norbornene group in the presence of a metathesis catalyst system and also in the presence of an effective amount of an organic halometal compound activator, wherein said norbornene group has the following structure: and wherein said organic halometal compound has the following structure: R m Y X n where m is 0 to 4 and n is 1 to 5 individually selected from hydrogen, alkenyl, alkyl, alkoxy, aryl, alkaryl and saturated and unsaturated monocyclic, dicyclic and polycyclic groups; Y is selected from tin, lead, magnesium, antimony, boron, germanium, and silicon; and X is individually selected from halogen atoms.
Claim 3
Dependent Claim
108 words
Process of claim 1 wherein said activator is selected from the following silane compounds: R m SiX x where m is 0 to 3 and m is 1 to 4 individually selected from hydrogen, alkyl groups of 1 to 12 carbon atoms alkoxy groups of 1 to 12 carbon atoms, alkenyl groups of 2 to 12 carbon atoms, aryl groups of 6 to 18 carbon atoms, alkaryl groups wherein there is at least one alkyl substituent on the aryl moiety containing 1 to 4 carbon atoms, and saturated and unsaturated monocyclic and dicyclic groups containing 5 to 12 carbon atoms; and X is individually selected from halogen atoms.
Claim 4
Dependent Claim
34 words
Process of claim 2 wherein in said activator, R is individually selected from alkyl and alkoxy groups of 1 to 6 carbon atoms, hydrogen, and X is individually selected from chlorine and bromine atoms.
Claim 5
Dependent Claim
70 words
Process of claim 2 wherein said monomers are selected from substituted and unsubstituted norbornenes, dicyclopentadienes, dihydrodicyclopentadienes, trimers of cyclopentadienes, tetracyclododecenes, hexacycloheptadecenes, ethylidenenorbornenes, vinylnorbornenes, and mixtures thereof, and wherein substituents on said monomers are selected from alkyl and aryl groups of 1 to 20 carbon atoms, saturated and unsaturated cyclic groups of 3 to 12 carbon atoms which can be formed with at least one ring carbon atom, and mixtures thereof.
Claim 6
Dependent Claim
21 words
Process of claim 4 wherein said substituents on said monomers are selected from alkyl groups of 1 to 2 carbon atoms.
Claim 7
Dependent Claim
34 words
Process of claim 3 wherein said monomer is selected from dicyclopentadiene, methyltetracyclododecene, norbornene, ethylidenenorbornene, vinylnorbornene, alkyl and alkenyl norbornenes containing 1 to 12 carbon atoms in the alkyl or alkenyl group, and mixtures thereof.
Claim 8
Dependent Claim
21 words
Process of claim 6 wherein said ring opening polymerization is carried out with solution polymerization in a suitable solvent or diluent.
Claim 9
Dependent Claim
39 words
Process of claim 4 wherein said ring opening polymerization includes the mixing of multiple streams containing said methathesis catalyst system and said organic halometal compound, and injecting the mixture into a mold where said ring opening polymerization is conducted.
Claim 10
Dependent Claim
29 words
Process of claim 8 wherein said monomer is selected from dicyclopentadiene (DCPD), methylnorbornene (MNB), methyltetracyclododecene (MTD), ethylidenenorbornene (EN), vinylnorbornene (VN) and mixtures thereof, said monomers having the following structures:
Claim 11
Dependent Claim
28 words
Process of claim 8 wherein said monomer is selected from dicyclopentadiene, methyltetracyclododecene, norbornene, alkyl norbornenes containing 1 to 2 carbon atoms in the alkyl group, and mixtures thereof.
Claim 12
Dependent Claim
38 words
Process of claim 8 for preparing a polymer of DCPD selected from homopolymers of DCPD and copolymers thereof with at least one comonomer selected from EN, VN, MNB and MTD, wherein DCPD is present in a major proportion.
Claim 13
Dependent Claim
44 words
Process of claim 11 wherein said activator is selected from chlorosilanes which results in a fast reaction with a quick exotherm in a period of 1 to 20 seconds at mold temperatures as low as about 40 to 70°C. with polymer conversions exceeding 95%.
Claim 14
Dependent Claim
45 words
Process of claim 12 wherein said catalyst is selected from organoammonium molybdates and tungstates and wherein said cocatalyst is selected from trialkylaluminum and dialkylaluminum chloride, alkylaluminum sesquichloride, alkylaluminum dichloride, and mixtures thereof wherein the alkyl group in said cocatalyst contains 2 to 8 carbon atoms.
Claim 15
Dependent Claim
41 words
Process of claim 11 wherein said activator is selected from chlorosilanes which result in ring opening polymerization that is faster, that is carried out at a lower mold temperature and that leads to higher conversions of monomer or monomers to polymer.
Claim 16
Dependent Claim
19 words
Process of claim 13 wherein amount of said activator is 0.05 to 10.0 millimoles per mole of said monomer(s).
Claim 17
Dependent Claim
18 words
Process of claim 13 wherein amount of said activator is 0.1 to 2.0 millimoles per mole of monomer(s).
Claim 18
Dependent Claim
23 words
Process of claim 16 wherein said activators are selected from bicycloheptenyl-methyldichlorosilane, dimethyldichlorosilane, diphenyldichlorosilane, diphenyldichlorosilane, phenylmethyldichlorosilane, dihexyldichlorosilane, the corresponding monochloro silanes, and mixtures thereof.
Claim 19
Dependent Claim
27 words
Process of claim 16 wherein said activator is selected from monochloro, dichloro, trichloro, tetrachlorosilanes, and mixtures of such silanes which increase the polymerization rate of said monomer(s).
Claim 20
Dependent Claim
15 words
Process of claim 1 wherein said activator is selected from tetrachlorotin, tetrachlorogermanium, and mixtures thereof.
References Cited (Backward Citations)
No citation records indexed.
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