FR2079991A5 - Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors - Google Patents
Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectorsInfo
- Publication number
- FR2079991A5 FR2079991A5 FR7005966A FR7005966A FR2079991A5 FR 2079991 A5 FR2079991 A5 FR 2079991A5 FR 7005966 A FR7005966 A FR 7005966A FR 7005966 A FR7005966 A FR 7005966A FR 2079991 A5 FR2079991 A5 FR 2079991A5
- Authority
- FR
- France
- Prior art keywords
- pearls
- asymmetrical
- polymer
- concn
- colloid
- 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
- 239000011049 pearl Substances 0.000 title abstract 3
- 239000000084 colloidal system Substances 0.000 title abstract 2
- 230000001012 protector Effects 0.000 title abstract 2
- 239000000725 suspension Substances 0.000 title abstract 2
- 239000004793 Polystyrene Substances 0.000 title 1
- 229920002223 polystyrene Polymers 0.000 title 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 4
- 229920000642 polymer Polymers 0.000 abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 239000012429 reaction media Substances 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229920013821 hydroxy alkyl cellulose Polymers 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 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
- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F12/06—Hydrocarbons
- C08F12/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/16—Making expandable particles
- C08J9/20—Making expandable particles by suspension polymerisation in the presence of the blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Lubricants (AREA)
Abstract
The pearls of a styrene polymer (or copolymer with up to 80% of another monomer) are made by aqs. suspension polymsn. of the styrene (mixt.) in a concn. of 20 wt.% of reaction medium to coalescing concn; (pref. 45 - 70 wt.%), using a colloid protector (such as PVA, PVP, hydroxyalkylcellulose, Al2O3 or CaCO3), opt. a surfactant, and sufficient agitation to give a shearing action on polymer pearls once reaction medium thickens (e.g. tip speed 1.45 - 7 m/s.) Gives better handle of polymer feed to processing machinery, with less danger of personnel slipping.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7005966A FR2079991A5 (en) | 1970-02-19 | 1970-02-19 | Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors |
| BE771338A BE771338A (en) | 1970-02-19 | 1971-08-13 | PREPARATION OF DEFORMED STYRENE POLYMER BEADS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7005966A FR2079991A5 (en) | 1970-02-19 | 1970-02-19 | Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors |
| BE771338A BE771338A (en) | 1970-02-19 | 1971-08-13 | PREPARATION OF DEFORMED STYRENE POLYMER BEADS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2079991A5 true FR2079991A5 (en) | 1971-11-12 |
Family
ID=25656930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7005966A Expired FR2079991A5 (en) | 1970-02-19 | 1970-02-19 | Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE771338A (en) |
| FR (1) | FR2079991A5 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4618468A (en) * | 1983-09-01 | 1986-10-21 | Chemische Werke Huls Aktiengesellschaft | Method for controlling bead size in the production of expandable styrene polymers by suspension polymerization |
| WO2004029151A1 (en) * | 2002-09-20 | 2004-04-08 | Basf Aktiengesellschaft | Mixtures of propellant-free microgranulates |
-
1970
- 1970-02-19 FR FR7005966A patent/FR2079991A5/en not_active Expired
-
1971
- 1971-08-13 BE BE771338A patent/BE771338A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4618468A (en) * | 1983-09-01 | 1986-10-21 | Chemische Werke Huls Aktiengesellschaft | Method for controlling bead size in the production of expandable styrene polymers by suspension polymerization |
| WO2004029151A1 (en) * | 2002-09-20 | 2004-04-08 | Basf Aktiengesellschaft | Mixtures of propellant-free microgranulates |
Also Published As
| Publication number | Publication date |
|---|---|
| BE771338A (en) | 1972-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DK104019C (en) | Process for the preparation of gel granules of high molecular weight hydrophilic copolymers. | |
| NL158186B (en) | Process for the preparation of unsaturated quaternary monomers and of polymers thereof, and product formed therefrom. | |
| GB974023A (en) | Preparation of dried polyacrylamide compositions | |
| FR1321077A (en) | Process for the preparation of low molecular weight copolymers containing hydroxyl groups | |
| FR2079991A5 (en) | Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors | |
| GB948303A (en) | Improved styrene polymer compositions | |
| GB1443073A (en) | Method of preparing copolymers | |
| CH452901A (en) | Process for the production of reaction products of thermoplastic, halogen-containing homopolymers or copolymers or polymer mixtures | |
| CH456140A (en) | Process for the preparation of aqueous dispersions of polymers or copolymers containing reactive groups | |
| GB1115985A (en) | Process for the polymerisation of lactams | |
| ES396781A1 (en) | Method of dissolving water soluble vinyl polymers in water | |
| FR1228463A (en) | Copolymerization under the effect of ultra-violet light, of high solid polymers such as polythene containing peroxy groups | |
| GB678989A (en) | Emulsions of polyvinyl methyl ketone | |
| GB1288438A (en) | ||
| GB971055A (en) | Acrylic acid polymers | |
| GB897341A (en) | Thermoplastic rigid and shock-resistant materials based on vinyl chloride polymers | |
| SU481626A1 (en) | The method of obtaining high-impact copolymers of styrene | |
| FR1366309A (en) | Handling device, in particular for continuous evacuation of products such as bricks or others to the dryers | |
| GB932133A (en) | Improved vinyl chloride polymers | |
| AT249999B (en) | Process for the preparation of new, high molecular weight, essentially linear, amorphous, unsaturated copolymers | |
| FR1385482A (en) | Process for the polymerization of alpha-olefins, resulting in stereoregular macromolecular products | |
| FR2095775A6 (en) | Vinyl chloride (co) polymerisation | |
| CA842314A (en) | Aqueous dispersion of ethylene/vinyl alkanoate copolymer and wax containing neoprene or hydrolyzed ethylene/vinyl alkanoate copolymer | |
| GB747167A (en) | A process of stabilising natural or artificial rubber to increase its resistance to ageing | |
| CH434759A (en) | Process for the production of vulcanizable, largely linear, high molecular weight copolymers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |