IT1158188B - Atactic polymer recovery from propylene polymerisation prods. - with addn. of small amt. of solvent to prevent fouling of evaporator surfaces - Google Patents
Atactic polymer recovery from propylene polymerisation prods. - with addn. of small amt. of solvent to prevent fouling of evaporator surfacesInfo
- Publication number
- IT1158188B IT1158188B IT5243278A IT5243278A IT1158188B IT 1158188 B IT1158188 B IT 1158188B IT 5243278 A IT5243278 A IT 5243278A IT 5243278 A IT5243278 A IT 5243278A IT 1158188 B IT1158188 B IT 1158188B
- Authority
- IT
- Italy
- Prior art keywords
- propylene
- evaporator
- solvent
- addn
- heat transfer
- Prior art date
Links
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 title abstract 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 title abstract 6
- 239000002904 solvent Substances 0.000 title abstract 3
- 229920001585 atactic polymer Polymers 0.000 title abstract 2
- 238000011084 recovery Methods 0.000 title 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 abstract 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 abstract 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 abstract 2
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 abstract 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 abstract 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 abstract 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 125000002947 alkylene group Chemical group 0.000 abstract 1
- 239000001273 butane Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 229920001580 isotactic polymer Polymers 0.000 abstract 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 239000008096 xylene Substances 0.000 abstract 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Atactic polymer coproduced in the suspension polymerisation of propylene in liquified propylene and separated from insoluble isotactic polymer is dissolved form is heated at 45 - 90 degrees C under a pressure of 13 - 40 kg/cm2, while supplying >=1 solvent (hydrocarbons of >=4C, e.g. butane, pentane, hexane, heptane, 1-butene, cyclohexane, naphthene, benzene, toluene, xylene; C1-8 alcohols, e.g. methanol, ethanol, isobutanol, 2-ethyl hexanol; and alkylene oxides, e.g. propylene oxide, ethylene oxide) (1-20 wt.% of the liquefied propylene) upstream of the evaporator to recover a mixt. of polymer and propylene in molten state. The addn. of a solvent in a minor amount to the liquified propylene evaporator effectively prevents fouling on the heat transfer surface of the evaporator which deteriorates the heat transfer coefficient and can block heat transfer pipes of the evaporator.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15937277A JPS6024803B2 (en) | 1977-12-28 | 1977-12-28 | Recovery method of atactic polymer |
| JP1608278A JPS54108889A (en) | 1978-02-14 | 1978-02-14 | Recovery of atactic polymer |
| JP14384378A JPS6024804B2 (en) | 1978-11-20 | 1978-11-20 | Recovery method of atactic polymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7852432A0 IT7852432A0 (en) | 1978-12-22 |
| IT1158188B true IT1158188B (en) | 1987-02-18 |
Family
ID=27281245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT5243278A IT1158188B (en) | 1977-12-28 | 1978-12-22 | Atactic polymer recovery from propylene polymerisation prods. - with addn. of small amt. of solvent to prevent fouling of evaporator surfaces |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1158188B (en) |
-
1978
- 1978-12-22 IT IT5243278A patent/IT1158188B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7852432A0 (en) | 1978-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19931229 |