RO86086B1 - Process for butadyenestyrene elestomer blockcopolymer synthesis - Google Patents
Process for butadyenestyrene elestomer blockcopolymer synthesisInfo
- Publication number
- RO86086B1 RO86086B1 RO109544A RO10954482A RO86086B1 RO 86086 B1 RO86086 B1 RO 86086B1 RO 109544 A RO109544 A RO 109544A RO 10954482 A RO10954482 A RO 10954482A RO 86086 B1 RO86086 B1 RO 86086B1
- Authority
- RO
- Romania
- Prior art keywords
- synthesis
- coupling agent
- catalyst
- butadyenestyrene
- elestomer
- Prior art date
Links
Landscapes
- Silicon Polymers (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
Abstract
Procedeul de sinteza a blocopolimerilor elastomeri termoplastici, conform inventiei se caracterizeaza prin aceea ca într-o prima faza se polimerizeaza stirenul în prezenta unui catalizator, organo-litic la temperatura de 30 degree C, din care, în faza a doua se initiaza polimerizarea butadienei la temperatura de 60 degree C cu homopolimerul activ format în prima faza a sintezei, iar în faza a treia, se cupleaza diblocopolimerul activ rezultat din faz a doua a reactiei cu un agent de cuplare di-sau polifunctional ales dintre iod dimetildiclorsilan, acetat de etil, dicetone, Si Cl4, CCl4,diesteri, dianhidride, în proportie sub stoichiometrica fata de catalizator, astfel încat cantitatea molara de agent de cuplare utilizata pt. un mod de catalizator efectivsa fie cuptinsa între 0,95/EF 0,45/EF, preferabil între 0,85/EF 0,50/EF, unde E este eficienta, F este functionalitatea agentului de cuplare.The process for the synthesis of thermoplastic elastomeric block copolymers according to the invention is characterized in that, in a first step, the styrene is polymerized in the presence of an organolithic catalyst at a temperature of 30 ° C, of which, in the second step, polymerization of the butadiene to the temperature of 60 degrees C with the active homopolymer formed in the first phase of the synthesis, and in the third step, the active diblocopolymer resulting from the second phase of the reaction is coupled with a di- or polyfunctional coupling agent selected from dimethyldichlorosilane iodide, ethyl acetate, diketone, SiCl 4, CCl 4, diesters, dianhydrides, in proportions below the stoichiometric to the catalyst, so that the molar amount of coupling agent used for an effective catalyst mode is either comprised between 0.95 / EF 0.45 / EF, preferably between 0.85 / EF 0.50 / EF, where E is efficient, F is the functionality of the coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109544A RO86086B1 (en) | 1982-12-30 | 1982-12-30 | Process for butadyenestyrene elestomer blockcopolymer synthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109544A RO86086B1 (en) | 1982-12-30 | 1982-12-30 | Process for butadyenestyrene elestomer blockcopolymer synthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO86086A2 RO86086A2 (en) | 1985-02-25 |
| RO86086B1 true RO86086B1 (en) | 1985-03-01 |
Family
ID=20112462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO109544A RO86086B1 (en) | 1982-12-30 | 1982-12-30 | Process for butadyenestyrene elestomer blockcopolymer synthesis |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO86086B1 (en) |
-
1982
- 1982-12-30 RO RO109544A patent/RO86086B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO86086A2 (en) | 1985-02-25 |
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