RO86085B1 - Procedeu pentru sinteza tribloccopolimerilor butadien-stirenici elastomeri termoplastici - Google Patents
Procedeu pentru sinteza tribloccopolimerilor butadien-stirenici elastomeri termoplasticiInfo
- Publication number
- RO86085B1 RO86085B1 RO109543A RO10954382A RO86085B1 RO 86085 B1 RO86085 B1 RO 86085B1 RO 109543 A RO109543 A RO 109543A RO 10954382 A RO10954382 A RO 10954382A RO 86085 B1 RO86085 B1 RO 86085B1
- Authority
- RO
- Romania
- Prior art keywords
- catalyst
- styrene
- butadyene
- elestomer
- triblockcopolymer
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
- 229920001169 thermoplastic Polymers 0.000 title 1
- 239000004416 thermosoftening plastic Substances 0.000 title 1
- 229920000428 triblock copolymer Polymers 0.000 title 1
- 239000003054 catalyst Substances 0.000 abstract 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 239000007822 coupling agent Substances 0.000 abstract 2
- 229920000359 diblock copolymer Polymers 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 125000001979 organolithium group Chemical group 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
Landscapes
- Graft Or Block Polymers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Procedeul conform inventiei se efectueaza în trepte în prima treapta se polimerizeaza stirenul cu catalizator organolitiu la temperatura de 30 degree C formandu-se blocul polistirel-litiu activ, care este catalizator pentru treapta a doua de reactie în care se polimerizeaza butadiena la temperatura de 60 degree C, rezultînd un diblococopolimer activ, iar în treapta a treia se realizeaza cuplarea catenelor de diblocopolimer cu un exces de agent de cuplare fata de diblocopolimer timp de doua ore la 60 degree C la un raport molar agent de cuplare/catalizator efectiv cuprins între 0,525/E si 0,575/E si 0,75/E în care E esteeficienta catalizatorului rezultand un amestec de diblocopolimer continînd 5....55% de preferinta 15.....50% dibloccopolimer liber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109543A RO86085B1 (ro) | 1982-12-30 | 1982-12-30 | Procedeu pentru sinteza tribloccopolimerilor butadien-stirenici elastomeri termoplastici |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109543A RO86085B1 (ro) | 1982-12-30 | 1982-12-30 | Procedeu pentru sinteza tribloccopolimerilor butadien-stirenici elastomeri termoplastici |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO86085A2 RO86085A2 (ro) | 1985-02-25 |
| RO86085B1 true RO86085B1 (ro) | 1985-03-02 |
Family
ID=20112461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO109543A RO86085B1 (ro) | 1982-12-30 | 1982-12-30 | Procedeu pentru sinteza tribloccopolimerilor butadien-stirenici elastomeri termoplastici |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO86085B1 (ro) |
-
1982
- 1982-12-30 RO RO109543A patent/RO86085B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO86085A2 (ro) | 1985-02-25 |
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