GB1344060A - Polymerisation of vinyl aromatic monomers - Google Patents
Polymerisation of vinyl aromatic monomersInfo
- Publication number
- GB1344060A GB1344060A GB1344060DA GB1344060A GB 1344060 A GB1344060 A GB 1344060A GB 1344060D A GB1344060D A GB 1344060DA GB 1344060 A GB1344060 A GB 1344060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- monomer
- stage
- polymerization
- maintain
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000178 monomer Substances 0.000 title abstract 11
- 229920002554 vinyl polymer Polymers 0.000 title abstract 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 abstract 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 abstract 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 abstract 4
- 238000006116 polymerization reaction Methods 0.000 abstract 4
- 239000000725 suspension Substances 0.000 abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 229920000642 polymer Polymers 0.000 abstract 3
- 239000002245 particle Substances 0.000 abstract 2
- 230000000379 polymerizing effect Effects 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004342 Benzoyl peroxide Substances 0.000 abstract 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 abstract 1
- 235000021355 Stearic acid Nutrition 0.000 abstract 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 235000019400 benzoyl peroxide Nutrition 0.000 abstract 1
- 239000003999 initiator Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 abstract 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 abstract 1
- 239000012798 spherical particle Substances 0.000 abstract 1
- 239000008117 stearic acid Substances 0.000 abstract 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
1344060 Suspension polymerizing vinyl aromatic monomers BP CHEMICALS Ltd 14 June 1971 [19 June 1970] 29796/70 Heading C3P A process for producing non-spherical polymer particles containing not more than about 20% by wt. of spherical particles comprises (1) suspending a vinyl aromatic monomer as an aqueous solution of sufficient hydroxyethyl cellulose to maintain a stable suspension until at least 40% of the monomer is polymerized, but insufficient to maintain a stable suspension until complete conversion, (2) polymerizing the stably suspended monomer to at least 40% but less than complete monomer conversion, (3) adding sufficient hydroxyethyl cellulose and/or water to maintain a stable suspension until complete monomer conversion and. (4) continuing the polymerization. The preferred monomer is styrene. Preferably 0À02 to 0À05% by wt. (based on the monomer) of hydroxyethyl cellulose is added in stage (1), and 0À05 to 1À0% by wt. (based on the monomer plus polymer) in stage (4). The weight ratio of monomer plus polymer throughout the polymerization is suitably from 1 : 2 to 2 : 1. The temperature is preferably kept below 100‹ C. during the first polymerization stage and raised above this in the second polymerization stage. Examples are given, in which the initiator is a mixture of benzoyl peroxide and t-butyl perbenzoate, and stearic acid is present. The particles produced are flattened spheres. In one example hydroxyethylcellulose is added in stage 3 and in the other example water is added.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2979670 | 1970-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1344060A true GB1344060A (en) | 1974-01-16 |
Family
ID=10297300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1344060D Expired GB1344060A (en) | 1970-06-19 | 1970-06-19 | Polymerisation of vinyl aromatic monomers |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE768669A (en) |
| DE (1) | DE2130375A1 (en) |
| FR (1) | FR2099192A5 (en) |
| GB (1) | GB1344060A (en) |
| NL (1) | NL7108182A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189069A (en) * | 1990-09-15 | 1993-02-23 | Huels Aktiengesellschaft | Process for controlling the particle size in the preparation of expandable styrene polymers by suspension polymerization |
-
1970
- 1970-06-19 GB GB1344060D patent/GB1344060A/en not_active Expired
-
1971
- 1971-06-15 NL NL7108182A patent/NL7108182A/xx unknown
- 1971-06-17 BE BE768669A patent/BE768669A/en unknown
- 1971-06-18 FR FR7122164A patent/FR2099192A5/fr not_active Expired
- 1971-06-18 DE DE19712130375 patent/DE2130375A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189069A (en) * | 1990-09-15 | 1993-02-23 | Huels Aktiengesellschaft | Process for controlling the particle size in the preparation of expandable styrene polymers by suspension polymerization |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2099192A5 (en) | 1972-03-10 |
| BE768669A (en) | 1971-12-17 |
| DE2130375A1 (en) | 1971-12-23 |
| NL7108182A (en) | 1971-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |