DE2314136C2 - Kunststoffmassen bestehend aus einem hydrierten Blockcopolymeren und einem Kohlenwasserstoff-Polymeren und Verfahren zu deren Herstellung - Google Patents
Kunststoffmassen bestehend aus einem hydrierten Blockcopolymeren und einem Kohlenwasserstoff-Polymeren und Verfahren zu deren HerstellungInfo
- Publication number
- DE2314136C2 DE2314136C2 DE2314136A DE2314136A DE2314136C2 DE 2314136 C2 DE2314136 C2 DE 2314136C2 DE 2314136 A DE2314136 A DE 2314136A DE 2314136 A DE2314136 A DE 2314136A DE 2314136 C2 DE2314136 C2 DE 2314136C2
- Authority
- DE
- Germany
- Prior art keywords
- block
- hydrogenated
- polymer
- block copolymer
- hydrogenation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920000642 polymer Polymers 0.000 title claims description 54
- 229920001400 block copolymer Polymers 0.000 title claims description 50
- 239000004033 plastic Substances 0.000 title claims description 23
- 229920003023 plastic Polymers 0.000 title claims description 23
- 229930195733 hydrocarbon Natural products 0.000 title claims description 14
- 239000004215 Carbon black (E152) Substances 0.000 title claims description 13
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 13
- 238000000034 method Methods 0.000 title description 10
- 238000004519 manufacturing process Methods 0.000 title description 8
- 150000001875 compounds Chemical class 0.000 title 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 31
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 27
- 238000005984 hydrogenation reaction Methods 0.000 claims description 27
- 229920001519 homopolymer Polymers 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 17
- 239000005062 Polybutadiene Substances 0.000 claims description 14
- 229920002857 polybutadiene Polymers 0.000 claims description 14
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 claims description 4
- 229920001195 polyisoprene Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 description 19
- 229920005989 resin Polymers 0.000 description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 17
- 238000006116 polymerization reaction Methods 0.000 description 15
- 150000001993 dienes Chemical class 0.000 description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 12
- 239000004793 Polystyrene Substances 0.000 description 11
- 239000004606 Fillers/Extenders Substances 0.000 description 10
- 239000000178 monomer Substances 0.000 description 10
- 239000003999 initiator Substances 0.000 description 9
- 229920002223 polystyrene Polymers 0.000 description 9
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- BKOOMYPCSUNDGP-UHFFFAOYSA-N 2-methylbut-2-ene Chemical compound CC=C(C)C BKOOMYPCSUNDGP-UHFFFAOYSA-N 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 125000001931 aliphatic group Chemical group 0.000 description 6
- 239000007822 coupling agent Substances 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000012661 block copolymerization Methods 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- -1 diene hydrocarbon Chemical class 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229920001608 poly(methyl styrenes) Polymers 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000012442 inert solvent Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 2
- KPAPHODVWOVUJL-UHFFFAOYSA-N 1-benzofuran;1h-indene Chemical compound C1=CC=C2CC=CC2=C1.C1=CC=C2OC=CC2=C1 KPAPHODVWOVUJL-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 125000000555 isopropenyl group Chemical group [H]\C([H])=C(\*)C([H])([H])[H] 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 2
- 229920001083 polybutene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- GRWFGVWFFZKLTI-IUCAKERBSA-N (-)-α-pinene Chemical compound CC1=CC[C@@H]2C(C)(C)[C@H]1C2 GRWFGVWFFZKLTI-IUCAKERBSA-N 0.000 description 1
- DXIJHCSGLOHNES-UHFFFAOYSA-N 3,3-dimethylbut-1-enylbenzene Chemical compound CC(C)(C)C=CC1=CC=CC=C1 DXIJHCSGLOHNES-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 235000013844 butane Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- FJBFPHVGVWTDIP-UHFFFAOYSA-N dibromomethane Chemical compound BrCBr FJBFPHVGVWTDIP-UHFFFAOYSA-N 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical class CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005949 ozonolysis reaction Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003251 poly(α-methylstyrene) Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 239000011414 polymer cement Substances 0.000 description 1
- 150000003097 polyterpenes Chemical class 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S525/914—Polymer from conjugated diene hydrocarbon or halohydrocarbons having more than 50 per cent 1,2-microstructure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S525/94—Hydrogenation of a polymer
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23754072A | 1972-03-23 | 1972-03-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2314136A1 DE2314136A1 (de) | 1973-10-04 |
| DE2314136C2 true DE2314136C2 (de) | 1982-09-23 |
Family
ID=22894172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2314136A Expired DE2314136C2 (de) | 1972-03-23 | 1973-03-21 | Kunststoffmassen bestehend aus einem hydrierten Blockcopolymeren und einem Kohlenwasserstoff-Polymeren und Verfahren zu deren Herstellung |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3766295A (ref) |
| JP (1) | JPS5644914B2 (ref) |
| BE (1) | BE796964A (ref) |
| CA (1) | CA1007785A (ref) |
| DE (1) | DE2314136C2 (ref) |
| ES (1) | ES412889A1 (ref) |
| FR (1) | FR2176983B1 (ref) |
| GB (1) | GB1423437A (ref) |
| IT (1) | IT981537B (ref) |
| NL (1) | NL175425C (ref) |
| ZA (1) | ZA731984B (ref) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4006116A (en) * | 1975-11-26 | 1977-02-01 | Shell Oil Company | Block copolymer compositions and articles |
| US4101484A (en) * | 1976-10-04 | 1978-07-18 | Phillips Petroleum Company | Sealant based on thermoplastic elastomer and mixed modifying resins |
| US4101482A (en) * | 1976-10-04 | 1978-07-18 | Phillips Petroleum Company | Sealant based on mixture of unsaturated and hydrogenated block copolymers |
| US4113914A (en) * | 1977-05-09 | 1978-09-12 | Phillips Petroleum Company | Process for applying sealant composition |
| US4167544A (en) * | 1978-08-23 | 1979-09-11 | Massachusetts Institute Of Technology | Polymer blends |
| FR2455294A1 (fr) * | 1979-04-27 | 1980-11-21 | Inst Francais Du Petrole | Elements sensibles a certains produits organiques polluants, notamment les hydrocarbures |
| US4286077A (en) * | 1980-04-21 | 1981-08-25 | Shell Oil Company | Weather resistant adhesive composition |
| US4386179A (en) * | 1980-05-07 | 1983-05-31 | Medical Research Associates, Ltd. | Hydrocarbon block copolymer with dispersed polysiloxane |
| US4500021A (en) * | 1980-12-24 | 1985-02-19 | Eschem, Inc. | Resealable articles and process |
| US4399249A (en) * | 1980-12-24 | 1983-08-16 | Eschem Inc. | Resealable pressure sensitive adhesives and products |
| JPS57200439A (en) * | 1981-06-03 | 1982-12-08 | Japan Synthetic Rubber Co Ltd | Rubber composition suitable for tire tread |
| US4444953A (en) * | 1981-11-12 | 1984-04-24 | Shell Oil Company | Assymetric block copolymers and corresponding adhesive formulations |
| US4391949A (en) * | 1981-11-12 | 1983-07-05 | Shell Oil Company | Asymmetric block copolymers and corresponding adhesive formulations |
| US4698059A (en) * | 1983-12-09 | 1987-10-06 | Concept Polymer Technologies, Inc. | Enteral feeding tubes |
| US4578413A (en) * | 1983-12-21 | 1986-03-25 | Medical Research Associates, Ltd. #2 | Polymeric tubings comprising polysiloxane-modified elastomer compositions |
| JPH0830125B2 (ja) * | 1988-11-29 | 1996-03-27 | 株式会社ブリヂストン | ゴム組成物 |
| US7858693B2 (en) * | 2006-03-24 | 2010-12-28 | Kratonpolymers U.S. Llc | Unhydrogenated block copolymer compositions |
| US7585916B2 (en) * | 2006-03-24 | 2009-09-08 | Kraton Polymers Us Llc | Block copolymer compositions |
| US7592390B2 (en) | 2006-03-24 | 2009-09-22 | Kraton Polymers U.S. Llc | Hydrogenated block copolymer compositions |
| US7582702B2 (en) * | 2006-03-24 | 2009-09-01 | Kraton Polymers U.S. Llc | Block copolymer compositons |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL288289A (ref) * | 1962-01-29 | |||
| US3333024A (en) * | 1963-04-25 | 1967-07-25 | Shell Oil Co | Block polymers, compositions containing them and process of their preparation |
| US3352944A (en) * | 1964-01-03 | 1967-11-14 | Phillips Petroleum Co | Blend of butadiene-styrene block copolymer with cis-polybutadiene |
-
1972
- 1972-03-23 US US00237540A patent/US3766295A/en not_active Expired - Lifetime
-
1973
- 1973-02-28 CA CA164,768A patent/CA1007785A/en not_active Expired
- 1973-03-19 BE BE1004911A patent/BE796964A/xx not_active IP Right Cessation
- 1973-03-20 JP JP3149373A patent/JPS5644914B2/ja not_active Expired
- 1973-03-21 ZA ZA731984A patent/ZA731984B/xx unknown
- 1973-03-21 IT IT21939/73A patent/IT981537B/it active
- 1973-03-21 DE DE2314136A patent/DE2314136C2/de not_active Expired
- 1973-03-21 ES ES412889A patent/ES412889A1/es not_active Expired
- 1973-03-21 GB GB1365573A patent/GB1423437A/en not_active Expired
- 1973-03-21 FR FR7310078A patent/FR2176983B1/fr not_active Expired
- 1973-03-21 NL NLAANVRAGE7303933,A patent/NL175425C/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ZA731984B (en) | 1973-12-19 |
| US3766295A (en) | 1973-10-16 |
| NL175425C (nl) | 1984-11-01 |
| ES412889A1 (es) | 1975-12-16 |
| BE796964A (nl) | 1973-09-19 |
| AU5359673A (en) | 1974-09-26 |
| CA1007785A (en) | 1977-03-29 |
| FR2176983A1 (ref) | 1973-11-02 |
| DE2314136A1 (de) | 1973-10-04 |
| GB1423437A (en) | 1976-02-04 |
| JPS497352A (ref) | 1974-01-23 |
| NL7303933A (ref) | 1973-09-25 |
| FR2176983B1 (ref) | 1977-04-29 |
| IT981537B (it) | 1974-10-10 |
| JPS5644914B2 (ref) | 1981-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| D2 | Grant after examination | ||
| 8339 | Ceased/non-payment of the annual fee |