SU251202A1 - PATENT TECHNICAL LIBRARY - Google Patents
PATENT TECHNICAL LIBRARYInfo
- Publication number
- SU251202A1 SU251202A1 SU1156951A SU1156951A SU251202A1 SU 251202 A1 SU251202 A1 SU 251202A1 SU 1156951 A SU1156951 A SU 1156951A SU 1156951 A SU1156951 A SU 1156951A SU 251202 A1 SU251202 A1 SU 251202A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- lithium
- patent technical
- technical library
- temperature
- exceeding
- Prior art date
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 5
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 150000002900 organolithium compounds Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- QQHZPQUHCAKSOL-UHFFFAOYSA-N butyl nitrate Chemical compound CCCCO[N+]([O-])=O QQHZPQUHCAKSOL-UHFFFAOYSA-N 0.000 description 1
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical class [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002641 lithium Chemical group 0.000 description 1
- -1 monolithium compound Chemical class 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Известен способ получени полимерных лиТийорганических соединений взаимодействием диеновых или винилароматических мономеров (типа стирола) в среде углеводородного растворител при температуре не более 90°С с алкилами, алкенилами или арилами лити Пр.И отношении мономера к соединению лити от 2 : 1 до 100: 1.A known method of producing polymeric organolithium compounds by reacting diene or vinylaromatic monomers (such as styrene) in a hydrocarbon solvent at a temperature not exceeding 90 ° C with alkyls, alkenyls or lithium aryls. Ex. The ratio of monomer to lithium is from 2: 1 to 100: 1.
Однако полученные продукты имеют только один атом лити на конце макромолекулы, т. е. вл ютс монолитийорганическими соединени ми .However, the products obtained have only one lithium atom at the end of the macromolecule, i.e. they are organic monolithium compounds.
Предлагаемый способ позвол ет получить дилитийорганические соединени , т. е. поламеры , содержащие два атома лити на концах макроцепи. Дл этого продукт, полученный при температуре не более 90°С, выдерживаетс в течение не менее 10 мин при температуре выше 90°С.The proposed method allows to obtain organic dilithium compounds, i.e., polymers containing two lithium atoms at the ends of the macrochain. For this, the product obtained at a temperature not exceeding 90 ° C is maintained for at least 10 minutes at a temperature above 90 ° C.
Дл облегчени выдерживани температурного режима введение мономера в раствор на первой стадии процесса проводитс путем равномерного дозировани его в жидкой или газовой фазе.To facilitate temperature control, the introduction of the monomer into the solution in the first stage of the process is carried out by uniformly dosing it in the liquid or gas phase.
П,р и М е р. Монолитийполиизопрен, полученный путем постепенного введени паров изопрена в раствор н-бутиллити в гептане 0,14 н. при 82-86°С и отношении изопренаP, R and MER Monolithium polyisoprene, obtained by the gradual introduction of isoprene vapor into n-butyl lithium solution in heptane 0.14 n. at 82-86 ° C and the ratio of isoprene
к н-бутиллитню, равном 24,5, прогревают при 98-ГОО°С в течение 95 мин.to the n-butyl nitrate, equal to 24.5, is heated at 98 ° COO ° C for 95 minutes.
Раствор полимера обрабатывают окисью пропилена, 0,1 н. раствором сол ной кислоты, водой и этиловым спиртом.The polymer solution is treated with propylene oxide, 0.1 n. hydrochloric acid solution, water and ethyl alcohol.
Полимер, высушенный до посто нного веса в вакууме дри 60°С имеет мол. в. 3800 (криоскоиический метод) и содержание ОН-групп 0,86%. Это соответствует содержанию в одной молекуле 1,9 атома лити . Концентраци неактивного лити по двойному титрованию увеличилась после прогрева с 17,7 до 18,7%.The polymer, dried to constant weight in a vacuum of 60 ° C, has a mol. at. 3800 (cryoscoic method) and the content of OH groups is 0.86%. This corresponds to the content in a single molecule of 1.9 lithium atoms. The concentration of inactive lithium by double titration increased after warming up from 17.7% to 18.7%.
Предмет изобретени Subject invention
Способ получени полимерных литийорганических соединений взаимодействием диеновых или винилароматических моно.меров в среде углеводородного растворител при температуре не более 90°С с алкилами, алкенилами или арилами лити при отношении мономера к соединению лити от 2 : 1 до 100: 1, отличающийс тем, что, с целью получени конечных продуктов, содержащих два атома лити на концах макромолекулы; процесс провод т сначала при температуре -не более 90°С до образовани монолитийорганического соединени и затем при температуре выше 90°С в течение более 10 мин.A method of producing polymeric organolithium compounds by reacting diene or vinyl aromatic monomers in a hydrocarbon solvent at a temperature not exceeding 90 ° C with alkyls, alkenyls or lithium aryls at a ratio of monomer to lithium from 2: 1 to 100: 1, characterized in that in order to obtain final products containing two lithium atoms at the ends of the macromolecule; The process is carried out first at a temperature of not more than 90 ° C to form an organic monolithium compound and then at a temperature above 90 ° C for more than 10 minutes.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU251202A1 true SU251202A1 (en) |
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