RO93006B1 - Procedeu de obtinere a copolimerilor grefati acrilonitrilbutadienstirenici - Google Patents
Procedeu de obtinere a copolimerilor grefati acrilonitrilbutadienstireniciInfo
- Publication number
- RO93006B1 RO93006B1 RO120259A RO12025985A RO93006B1 RO 93006 B1 RO93006 B1 RO 93006B1 RO 120259 A RO120259 A RO 120259A RO 12025985 A RO12025985 A RO 12025985A RO 93006 B1 RO93006 B1 RO 93006B1
- Authority
- RO
- Romania
- Prior art keywords
- styrene
- grafting
- support
- copolymers
- polybutadiene
- Prior art date
Links
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 title 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 title 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 title 1
- 229920000578 graft copolymer Polymers 0.000 title 1
Landscapes
- Graft Or Block Polymers (AREA)
Abstract
Inventia se refera la un procedeu de sinteza în emulsie a copolimerilor stiren - acrilonitril pe cauciucuri nesaturate (polibutadienic, copolimeri cu stirenul si MeSt sau cauciucuri acrilice), prin care se realizeaza o grefare uniforma a particulelor de cauciuc, în conditiile unui control riguros al temperaturii de reactie (regim izoterm). Cresterea gradului de grefare se realizeaza printr-un pretratament al latexului polibutadienic la 70 degree C cu monomeri vinilici, atît cu afinitate la suport (stiren, MeSt, vinil toluen), cît si solubili în apa (acrilonitril, acrilamida, acetat de vinil, metil metacrilat) si initiator peroxidic solubil în apa. Reactia de copolimerizare, are loc apoi în sistem semicontinuu, la debite de alimentare cu monomero de 30...90% din volumul total, iar protectia particulelor de polimer facîndu-se cu ajutorul emulgatorilor anionici (stearat de sodiu). Prin acest procedeu se poate obtine dirijarea gradului de grefare prin alegerea raportului polibutadiena/monomeri vinilici la pretratamentul suportului, controlul riguros al temperaturii de reactie prin fixarea debitelor de alimentare, cît si proprietati bune fizico-mecanice ale copolimerilor ABS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO120259A RO93006B1 (ro) | 1985-10-01 | 1985-10-01 | Procedeu de obtinere a copolimerilor grefati acrilonitrilbutadienstirenici |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO120259A RO93006B1 (ro) | 1985-10-01 | 1985-10-01 | Procedeu de obtinere a copolimerilor grefati acrilonitrilbutadienstirenici |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO93006A2 RO93006A2 (ro) | 1987-12-30 |
| RO93006B1 true RO93006B1 (ro) | 1987-12-31 |
Family
ID=20118003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO120259A RO93006B1 (ro) | 1985-10-01 | 1985-10-01 | Procedeu de obtinere a copolimerilor grefati acrilonitrilbutadienstirenici |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO93006B1 (ro) |
-
1985
- 1985-10-01 RO RO120259A patent/RO93006B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO93006A2 (ro) | 1987-12-30 |
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