WO1998045342A1 - Herstellung von homo-, co- oder blockcopolymeren aus cycloolefinischen monomereinheiten - Google Patents
Herstellung von homo-, co- oder blockcopolymeren aus cycloolefinischen monomereinheiten Download PDFInfo
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- WO1998045342A1 WO1998045342A1 PCT/EP1998/001803 EP9801803W WO9845342A1 WO 1998045342 A1 WO1998045342 A1 WO 1998045342A1 EP 9801803 W EP9801803 W EP 9801803W WO 9845342 A1 WO9845342 A1 WO 9845342A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F32/00—Homopolymers and copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
Definitions
- the present invention relates to processes for the production of homo-, co- or block copolymers from cycloolefinic monomer units.
- the invention further relates to homo-, co- and block copolymers of cycloolefinic monomer units, the polymer chains of which have hydroxyl end groups.
- the invention also relates to the use of a metal catalyst in the production of homo-, co- or block copolymers from cycloolefinic monomer units.
- Cationic transition metal complexes in particular nickel complexes, are described by Goodall et al., Proceedings of the Sixth International Business Forum on Specialty Polyolefins (SPO '96) as highly active catalysts for the addition polymerization of norbornene.
- SPO '96 Specialty Polyolefins
- the object of the present invention was therefore to provide a process for the preparation of polymers from cycloolefinic monomer units which, with good reaction control and unproblematic catalyst handling, enables high yields and short reaction times while maintaining the ring structure.
- M is a metal from Group VIII B of the Periodic Table of the Elements
- E1, E2 independently of one another an element from group VA of the periodic table of the elements
- a bridging structural unit consisting of one, two, three or four substructural units from elements of group IVA, VA, VIA of the periodic table of the elements,
- Metal complexes which fall under the following general formula (I) are preferably used as catalysts for the processes according to the invention:
- metal catalysts of the eighth subgroup of the Periodic Table of the Elements which are present as a defined metal complex (I) are suitable as polymerization catalysts.
- a defined metal complex in the sense of the present invention should preferably be understood to mean a compound which is produced separately before being used in the polymerization process.
- the active catalyst species can also be generated in-situ. If necessary, the
- Metal compounds activating additives are added.
- the metals M are preferably the metals nickel and palladium, palladium being particularly preferred.
- the metals nickel, palladium and platinum are basically present in the complexes with two positive charges; Iron, ruthenium and osmium are generally charged positively and cobalt and rhodium are generally single or triple, preferably single, charged.
- the elements E 1 , E 2 which interact coordinatively with the metal center in (I) are the elements of the 5th main group of the periodic system of the elements (group VA), that is to say nitrogen, phosphorus, arsenic, antimony or bismuth. Nitrogen or phosphorus, in particular nitrogen, are particularly suitable. In a metal complex, E 1 and E 2 do not necessarily have to be identical. However, E 1 and E 2 are preferably identical elements, nitrogen being preferred.
- the bridging structural unit Z connects the two elements E 1 and E 2 to one another.
- Z can be formed from interconnected substructure units each consisting of an atom from group IVA, VA, VIA of the periodic table of the elements, the possible free valences of these bridge atoms being able to be saturated in many ways, for example by sub- Stitution with hydrogen or with functional groups based on elements of groups IVA, VA, VIA or VIIA of the periodic table of the elements, such as silyl, alkyl, A ino, alkoxy groups or halogen.
- the substituents can form ring structures with one another or with the bridge atom.
- the bridging structural unit Z can represent, for example, a saturated or unsaturated carbon chain with up to four carbon atoms, it being possible for individual carbon atoms in the chain to be replaced by elements from groups IVA, VA or VIA of the periodic table of the elements.
- elements from groups IVA, VA or VIA of the periodic table of the elements For example, ether, thioether, amino, phosphino, imino or silane-bridged systems Z are suitable.
- heteroatom-terminated bridging structural units Z such as -0- (CH) -0- are possible.
- the bridge structure Z can be terminated with non-identical substructure units, for example with an N and a C atom, as in -N (R * ) -CH- or -N (R * ) - (CH 2 ) - : (R * eg hydrogen, alkyl or aryl).
- group IVA of the Periodic Table of the Elements such as methylene (-CH 2 -), 1,2-ethylene (-CH 2 CH 2 -), 1,3- Propylene
- 1,2-Ethylene, 1,3-propylene and 1,4-butylene may be mentioned as particularly suitable bridging structural units, with 1,2-ethylene being particularly preferred.
- Ar groups for example, aromatic rings fused to the heterocycle containing the bridge atom E 1 or E 2 , in particular ortho-fused aryl units, are suitable.
- Ar can be a fused benzene ring, a fused naphthyl unit, or a fused pyrrolidine ring.
- the radicals Ar can both be substituted, for example with functional groups based on the elements of groups IVA, VA, VIA, VIIA of the periodic table of the elements, such as silyl, alkyl, carboxy, ester, amide, amino, hydroxy , Alkoxy, phosphate groups or halogen, and also unsubstituted.
- Ar is preferably an unsubstituted fused benzene ring.
- the two aromatic units Ar present in the metal complex (I) preferably represent identical radicals.
- Preferably used as chelate ligands, ie as units bonded to the metal M via E 1 and E 2 are 1,2-bis (N-indolinyethane or 1,2-bis (N-1,2,3,4- tetrahydroquinolinyl) ethane.
- Lewis bases ie Lewis base compounds with at least one lone pair of electrons, preferably organic compounds or water, are generally suitable as formally uncharged ligands L 1 , L 2 .
- Lewis bases whose free electron pair or whose free electron pairs are located on a nitrogen or oxygen atom, ie nitriles, ketones, ethers or preferably water, are particularly suitable.
- Suitable Lewis bases include ci- to cio-nitriles such as
- Acetonitrile, propionitrile, benzonitrile or C 3 - to C ⁇ o-ketones such as acetone, acetylacetone or C to Cio ethers such as dimethyl ether, diethyl ether or tetrahydrofuran.
- ligands L 1 , L 2 in (I) are those of the formula (III)
- T is an organic to C 5 to C 5 carbon organic radical provided with a Lewis base group.
- Highly suitable organic to C 1 to C 1 carbon organic radicals are, for example, linear or also cyclic CH -) - n units, in which n is 1 to 10, ie methylene , 1,2-ethylene, 1,3-propylene, 1,4-butylene, 1,5-pentylene, 1,6-hexylene, 1,7-heptylene, 1,8-octylene, 1,9-nonylene or 1 , 10-decylene.
- Suitable Lewis base groups are ethers, esters, ketones, amines, phosphines and in particular nitrile (-C ⁇ N) or tertiary amines.
- R ' is Ci to Cio-alkyl or c 3 - to Cio-cycloalkyl, for example methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, t-butyl, cyclopentyl, Cyclohexyl.
- R 'can also mean C ⁇ - to Cio-aryl, such as phenyl or naphthyl, each optionally carrying inert radicals.
- metal complexes (I) are used in which the formally uncharged Lewis base ligands represent L 1 , L 2 acetonitrile or H0, particularly good results being achieved with H 2 O as the ligand for L 1 and L 2 .
- Suitable anions X in (I) are, for example, perchlorate,
- Sulphate, phosphate, nitrate and carboxylates such as acetate, trifluoroacetate, trichloroacetate, propionate, oxalate, citrate, benzoate, and conjugated anions of organosulphonic acids, for example methylsulphonate, trifluoromethylsulphonate and p-toluenesulphonate, furthermore tetrafluoroboroborate, tetrafluoroboroborate, tetrafluoroborate, tetrafluoroborate, tetrafluoroborate, nyDborat, hexafluorophosphate, hexafluoroarsenate or hexafluorophosphate antimonate.
- organosulphonic acids for example methylsulphonate, trifluoromethylsulphonate and p-toluenesulphonate, furthermore tetrafluoroboroborate, tetrafluoroboroborate, t
- one uses perchlorate, trifluoroacetate, sulfonates such as methylsulfonate, trifluoromethylsulfonate, p-toluene sulfonate, tetrafluoroborate or hexafluorophosphate, and in particular trifluoroacetate, perchlorate, tetrafluoroborate or p-toluene sulphonate as anion X .
- metal complexes which have a C 2 symmetry are preferably used in accordance with the inventive method.
- metal complexes which are in the meso form can also be used.
- the metal complexes (I) can be used both as a mixture of diastereomers, as a mixture of enantiomers or as enantiomerically pure or diastereomerically pure.
- Particularly suitable complexes include, for example, quo [1,2-bis (N-indolinyl) ethane] palladium (II) -bis (tetrafluorobora) and diaquo [1,2-bis (N-1,2,3,4-tetrahydroquinolinyl) ethane] palladium - (II) -bis (tetrafluoroborate) should be emphasized.
- the amount of catalyst is generally matched to the amount of monomer used, the molar ratio of monomer to catalyst usually being in the range from 30: 1 to 100000: 1. Ratios in the range from 200: 1 to 5000: 1, in particular 300: 1 to 2000: 1, are preferably selected. As a rule, the polymer yield increases in an almost linear ratio with increasing molar ratio of starting monomer to catalyst.
- the catalysts of the general formula (I) are generally prepared by processes known from the literature, as described in Abu-Surrah et al., J. Organomet. Chem. 1996, 512, 243.
- complex salts such as bis (benzonitrile) palladium (II) dichloride can be combined with bidentate nitrogen ligands such as 1,2-bis- (N-indolinyl) -ethane or 1,2-bis (1,2,3,4- tetrahydroquino-linyl) ethane with ligand exchange to the corresponding palladium dichloride complexes.
- These complexes can then be treated with silver tetrafluoroborate in the presence of e.g.
- Acetonitrile or water can be converted into the bis-acetonitrile or diaquoligand complexes.
- the diaquo complexes are also accessible from the bisacetonitrile complexes by stirring in water.
- the reactions described are usually carried out at room temperature.
- Halides, sulfates, phosphates, nitrates and carboxylates such as acetate, propionates, oxalates, citrates, benzoates and sulfonic acid salts, for example methyl sulfonates, trifluoromethyl sulfonate and p-toluenesulfonate, are suitable as complex salts of usually divalent metals M. Chlorides are preferably used for reasons of cost.
- the production of polymers from cycloolefinic monomer units takes place in the presence of additive components which have a polarized double bond. These compounds themselves do not participate in the polymerization reaction and are therefore not incorporated into the growing polymer chain. However, an interaction with the catalyst species cannot be ruled out. These additives increase the molecular weight M w of the polymers and lead to a narrower molecular weight distribution M w / M n (determined by means of gel permeation chromatography relative to polystyrene standards).
- the additive components with polarized double bonds are, for example, the esters of acrylic and methacrylic acid with ci- to cio-alkanols. Suitable in this context include Methyl acrylate, ethyl acrylate, t-butyl acrylate, n-butyl acrylate, i-butyl acrylate, ethylhexyl acrylate and the corresponding methacrylate derivatives. Mixtures of the compounds mentioned can also be used as the additive component.
- the molar ratio of starting monomer to additive is generally greater than 1:10, but preferably takes on values in the range from 1: 5 to 1000: 1 and particularly preferably in the range from 1: 2 to 50: 1.
- Tensioned ring systems which have one or more olefinic bonds in the cycle are advantageously used.
- Tensioned ring systems are to be understood in particular as those in which the bond geometry of the double bond units shows deviations from corresponding free, unstressed systems. The deviations can either be that the bond angles in the sp 2 plane do not allow an optimal overlap of the orbitals involved, or that a bond from the sp 2 plane is forced.
- cyclopropene, cyclopentene, dicyclopentadiene, bicyclo [2.2.1] hept-2-ene or bicyclo [2.2.2] oct-2-ene come as cycloolefinic monomer units, in each case also in substituted form, for example with alkyl, aryl or functional ones Groups based on elements of groups IVA, VA, VIA or VIIA of the periodic table of the elements, such as silyl, alkyl, carboxy, ester, amide, amino, hydroxyl, alkoxy, phosphate groups or halogen, in Question.
- norbornene derivatives are, for example, compounds in which the carbon valences that are not involved in the ring formation are, by alkyl residues, such as methyl, ethyl, i-, n-propyl, i-, n-, s-, t-butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl or their structure - analog Cycloalkyl radicals, such as cyclopropyl, cyclopentyl, Cyclohexyl, by aryl radicals, such as phenyl or naphthyl or by alkylaryl radicals, such as benzyl, are substituted.
- norbornene derivatives can be used, the functional groups based on elements from groups IVA, VA, VIA or VIIA of the periodic table of the elements, such as silyl, alkyl, carboxy, ester, amide, amino, hydroxy, Contain alkoxy, phosphate groups or halogens.
- Both single and multiple substituted norbornene derivatives can be used.
- homopolymers as well as statistical copolymers and block copolymers can be obtained from the cycloolefinic monomer units described above.
- homopolymers examples include polymers of norbornene (poly (2,3-bicyclo [2.2. 1] hept-2-ene), dicyclopentadiene, cyclopentene and vinylcyclohexene.
- the polynorbornene obtainable by the process according to the invention is characterized by a low solubility and by glass transition temperatures (Tg values) greater than 300 ° C. and is an amorphous, transparent molding compound.
- Copolymers of norbornene and a norbornene derivative such as 2- (hydroxymethyl) bicyclo [2.2.1] hept-5-ene, bicyclo [2.2. l] hept-5-en-2-yl methyl decanoate, bicyclo [2.2. l] hept-5-en-2-carboxylic acid or bicyclo [2.2.1] hept-5-en-2-carboxylic acid methyl ester.
- block copolymers are accessible by the processes according to the invention using the living character of the transition metal-catalyzed polymerization.
- the polymerization can be carried out after adding ethylene, styrene, methoxy- or hydroxy-substituted styrene, eugenol or 3-ethylidene-1-cyclohexene in the presence of diaquo [1,2-bis (N.
- the process according to the invention can be used to prepare homo-, co- and block copolymers from cycloolefinic monomer units with average molecular weights M w to 2 million g / mol.
- Polymers with average molecular weights in the range from 5000 to 1 million, particularly preferably in the range from 40,000 to 500,000 and in particular in the range from 50,000 to 250,000 g / mol are preferably obtained.
- the molecular weight distributions M n / M w obtained are generally in the range from 1.05 to 3.5 and preferably assume values in the range from 1.1 to 2.2 (determined by means of gel permeation chromatography, based on a polystyrene standard) .
- the polymerization processes according to the invention are generally carried out at reaction temperatures in the range from -40 ° C. to 100 ° C. Good results and good reaction control are generally possible at room temperature in accordance with the processes mentioned, using the catalysts and monomer units described.
- the polymerizations generally take place at normal pressure. With the catalysts described, it is not necessary to carry out the polymerizations in the absence of air and moisture.
- the polymerizations can be carried out either without solvent or in the presence of inert solvents such as halogenated hydrocarbons, for example dichloromethane or chlorobenzene.
- Solvent mixtures can also be used, with, in addition to the inert component, functionalized aromatic see compounds such as 1,2-dichlorobenzene or nitrobenzene.
- reaction times in the processes according to the invention usually range from 30 minutes to 24 hours. With reaction times of 1 to 4 hours, good yields and conversions can already be achieved.
- the catalyst can be used in a molar ratio in the range from 50: 1 to 10000: 1 (starting monomer / catalyst) and preferably in the range from 250: 1 to 2000: 1.
- the sales achieved are usually in the range of 50 to 100%.
- homopolymers, copolymers and block copolymers of, in particular, strained cycloolefinic monomer units, while maintaining the ring structure, are accessible in a preparatively uncomplicated manner using insensitive catalysts.
- the polymerization of norbornene provides regioselectively only the 1, 2-exo-linked addition product.
- the polynorbornene derivatives obtained are highly transparent, retain their shape very hot and can be used for the manufacture of medical devices and, if necessary, also as a polycarbonate substitute.
- the molecular weights M w and the molecular weight distribution M w / M n were determined by gel permeation chromatography (GPC), based on a polystyrene standard.
- the DSC data were determined using the Perkin-Elmer DSC-7 device at a heating rate of 10 ° C./min.
- the melting points were determined using a polarizing microscope. The heating rate was set to 10 ° C / min.
- the metal complexes rac-diacetonitrile- [1, 2 -bis (N-indolinyl) - ethane] alladium (II) -bis (tetrafluoroborate) (Kl), rac-diacetonitrile- [l, 2-bis (Nl, 2, 3, 4-tetrahydroquinolinyl) ethane] palladium (II) bis (tetrafluoroborate) (K2), rac-diaquo tl, 2-bis (N-indolyl) ethane] palladium (II) bis (tetrafluoroborate) (K3) and rac -Diaquo [l, 2-bis (Nl, 2,3, 4 - tetrahydroquinoline- nyl) ethane] palladium (II) bis (tetrafluoroborate)
- Norbornene was added to a solution of the palladium (II) complex Kl, K2, K3 or K4 (50 mg) in dichloromethane (50 ml), 1,2-dichlorobenzene (5.0 ml) and nitrobenzene (2.0 ml) (see Table 1), stirred for 1 h at room temperature and terminated the reaction by adding an excess of methanol. The polymer product was filtered off, washed with methanol and dried in vacuo at 80.degree.
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54232398A JP2001518955A (ja) | 1997-04-08 | 1998-03-26 | シクロオレフィン系単量体単位からなる単独重合体、共重合体またはブロック共重合体の製造 |
AU72115/98A AU7211598A (en) | 1997-04-08 | 1998-03-26 | Production of homocopolymers, co-copolymers or block copolymers from cycloolefinic monomer units |
EP98919166A EP0973813A1 (de) | 1997-04-08 | 1998-03-26 | Herstellung von homo-, co- oder blockcopolymeren aus cycloolefinischen monomereinheiten |
US09/402,541 US6262194B1 (en) | 1997-04-08 | 1998-03-26 | Production of homocopolymers, co-polymers or block copolymers from cycloolefinicmonomer units |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19714532.9 | 1997-04-08 | ||
DE19714532A DE19714532A1 (de) | 1997-04-08 | 1997-04-08 | Herstellung von Homo-, Co- oder Blockcopolymeren aus cycloolefinischen Monomereinheiten |
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Publication Number | Publication Date |
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WO1998045342A1 true WO1998045342A1 (de) | 1998-10-15 |
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ID=7825826
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PCT/EP1998/001803 WO1998045342A1 (de) | 1997-04-08 | 1998-03-26 | Herstellung von homo-, co- oder blockcopolymeren aus cycloolefinischen monomereinheiten |
Country Status (6)
Country | Link |
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US (1) | US6262194B1 (de) |
EP (1) | EP0973813A1 (de) |
JP (1) | JP2001518955A (de) |
AU (1) | AU7211598A (de) |
DE (1) | DE19714532A1 (de) |
WO (1) | WO1998045342A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6245871B1 (en) | 1997-04-18 | 2001-06-12 | Eastman Chemical Company | Group 8-10 transition metal olefin polymerization catalysts |
US6350832B1 (en) | 1998-12-09 | 2002-02-26 | The B. F. Goodrich Company | Mold addition polymerization of norbornene-type monomers using group 10 metal complexes |
US6455650B1 (en) | 1998-10-05 | 2002-09-24 | The B.F. Goodrich Company | Catalyst and methods for polymerizing cycloolefins |
US6620896B1 (en) | 1999-02-23 | 2003-09-16 | Eastman Chemical Company | Mixed olefin polymerization catalysts, processes employing such catalysts, and polymers obtained therefrom |
Families Citing this family (2)
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CN102970544A (zh) * | 2012-12-07 | 2013-03-13 | 豪威科技(上海)有限公司 | Jpeg编码和解码方法及*** |
JP6225294B2 (ja) | 2014-08-15 | 2017-11-01 | プロメラス, エルエルシー | ポリシクロオレフィンブロックポリマー、その製造方法、および重合組成物 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996037529A1 (en) * | 1995-05-24 | 1996-11-28 | The B.F. Goodrich Company | Homopolymers and copolymers of cationically polymerizable monomers and method of their preparation |
WO1996037526A1 (en) * | 1995-05-25 | 1996-11-28 | The B.F. Goodrich Company | Addition polymers of polycycloolefins containing functional substituents |
EP0758657A2 (de) * | 1993-11-16 | 1997-02-19 | The B.F. Goodrich Company | Additionspolymere aus funktionalisierten Norbornenmonomeren und Verfahren |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2721189A (en) | 1954-08-30 | 1955-10-18 | Du Pont | Polymeric bicyclo-(2, 2, 1)-2-heptene |
-
1997
- 1997-04-08 DE DE19714532A patent/DE19714532A1/de not_active Withdrawn
-
1998
- 1998-03-26 US US09/402,541 patent/US6262194B1/en not_active Expired - Fee Related
- 1998-03-26 WO PCT/EP1998/001803 patent/WO1998045342A1/de not_active Application Discontinuation
- 1998-03-26 AU AU72115/98A patent/AU7211598A/en not_active Abandoned
- 1998-03-26 JP JP54232398A patent/JP2001518955A/ja active Pending
- 1998-03-26 EP EP98919166A patent/EP0973813A1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0758657A2 (de) * | 1993-11-16 | 1997-02-19 | The B.F. Goodrich Company | Additionspolymere aus funktionalisierten Norbornenmonomeren und Verfahren |
WO1996037529A1 (en) * | 1995-05-24 | 1996-11-28 | The B.F. Goodrich Company | Homopolymers and copolymers of cationically polymerizable monomers and method of their preparation |
WO1996037526A1 (en) * | 1995-05-25 | 1996-11-28 | The B.F. Goodrich Company | Addition polymers of polycycloolefins containing functional substituents |
Non-Patent Citations (1)
Title |
---|
S. ADNAN: "SYNTHESIS AND STRUCTURE OF CHIRAL PALLADIUM(II) COMPLEXES BEARING ETHYLENE-BRIDGED BISINDOLINYL- AND BIS(1,2,3,4,-TETRAHYDROQUINOLINYL) LIGANDS.", JOURNAL OF ORGANOMETALLIC CHEMISTRY, vol. 512, 1996, pages 243 - 251, XP002075269 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6245871B1 (en) | 1997-04-18 | 2001-06-12 | Eastman Chemical Company | Group 8-10 transition metal olefin polymerization catalysts |
US6656869B2 (en) | 1997-04-18 | 2003-12-02 | Eastman Chemical Company | Group 8-10 transition metal olefin polymerization catalysts |
US6455650B1 (en) | 1998-10-05 | 2002-09-24 | The B.F. Goodrich Company | Catalyst and methods for polymerizing cycloolefins |
US6350832B1 (en) | 1998-12-09 | 2002-02-26 | The B. F. Goodrich Company | Mold addition polymerization of norbornene-type monomers using group 10 metal complexes |
US6620896B1 (en) | 1999-02-23 | 2003-09-16 | Eastman Chemical Company | Mixed olefin polymerization catalysts, processes employing such catalysts, and polymers obtained therefrom |
Also Published As
Publication number | Publication date |
---|---|
AU7211598A (en) | 1998-10-30 |
DE19714532A1 (de) | 1998-10-15 |
JP2001518955A (ja) | 2001-10-16 |
US6262194B1 (en) | 2001-07-17 |
EP0973813A1 (de) | 2000-01-26 |
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