GB1383924A - Method of manufacturing polymer particles having uniform crosslin king and expanded shaped articles formed therefrom - Google Patents
Method of manufacturing polymer particles having uniform crosslin king and expanded shaped articles formed therefromInfo
- Publication number
- GB1383924A GB1383924A GB1327772A GB1327772A GB1383924A GB 1383924 A GB1383924 A GB 1383924A GB 1327772 A GB1327772 A GB 1327772A GB 1327772 A GB1327772 A GB 1327772A GB 1383924 A GB1383924 A GB 1383924A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- cross linking
- agent
- cross
- linking agent
- 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
Classifications
-
- 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
- C08J9/18—Making expandable particles by impregnating polymer particles with 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
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)
- Dispersion Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
1383924 Cross linked polyolefins and foamable particles thereof KANEGAFUCHI KAGAKU KOGYO KK 21 March 1972 [25 March 1971(3)] 13277/72 Headings C3C and C3P Cross linked polyolefin resin particles are prepared by a method which comprises forming a suspension in water of polyolefin resin particles, by adding an aqueous solution of a surface active agent, containing a soluble or finely dispersed cross linking agent and a suspension stabilizer compatible with the cross linking agent, preferably a water-insoluble inorganic metal compound, and heating to a temperature sufficient to cause penetration of the cross linking agent into the particles and subsequently to a temperature sufficient to initiate a cross linking reaction. Where the particles produced have a gel content of 10 to 70% foamable cross linked particles may be prepared by adding a foaming agent thereto, and the foamable material may be prefoamed, stored and subsequently foamed by heating in an open mould. The resin may be polyethylene, polypropylene, an ethylene/vinyl acetate copolymer, or a polymer or copolymer of butadiene, styrene or vinyl chloride. The surface active agent may be a polyoxyethylene octylphenol ether, sodium dodecylbenzene sulphonate or sodium dialkyl sulphosuccinate. The cross linking agent may be dicumyl peroxide, 2,5-dimethyl-2,5-di-t.-butylperoxyhexane, di-t.-butyl perphthalate or t.- butyl hydroperoxide, optionally with a cross linking assistant such as divinyl benzene or acetylene. The inorganic metal salt may be a phosphate, oxide or hydroxide, e.g. calcium phosphate, zinc phosphate and aluminium hydroxide. The foaming agent may be a volatile hydrocarbon or halogenated hydrocarbon, and foaming may be effected by exposure to steam, hot air or liquid, infra-red radiation or high frequency magnetic field. In examples polyethylene resin particles are cross linked with dicumyl peroxide in aqueous suspension in the presence of surface active agents and (1, 4 and 6 to 9) calcium phosphate, (2 and 5) zinc phosphate and (3) aluminium hydroxide, and the products foamed with (1 to 4, 6, 7 and 9) difluorodichloromethane and (5 and 8) dichlorotetrafluoroethane.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1771571A JPS4944941B1 (en) | 1971-03-25 | 1971-03-25 | |
JP1771471A JPS5138746B1 (en) | 1971-03-25 | 1971-03-25 | |
JP1771371A JPS512940B1 (en) | 1971-03-25 | 1971-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1383924A true GB1383924A (en) | 1974-02-12 |
Family
ID=27281937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1327772A Expired GB1383924A (en) | 1971-03-25 | 1972-03-21 | Method of manufacturing polymer particles having uniform crosslin king and expanded shaped articles formed therefrom |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE780992A (en) |
DE (1) | DE2214628C3 (en) |
FR (1) | FR2131618A5 (en) |
GB (1) | GB1383924A (en) |
IT (1) | IT952361B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2121046A (en) * | 1982-05-14 | 1983-12-14 | Sekisui Plastics | Producing foamable olefin vinylaromatic resin particles |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1489580A (en) * | 1973-10-15 | 1977-10-19 | Nordiske Kabel Traad | Manufacturing cross-linked moulded articles from cross-linkable polymeric materials |
FR2400423A1 (en) * | 1977-08-15 | 1979-03-16 | Asahi Dow Ltd | POLYOLEFIN RESIN EXPANDED PARTICLE MATERIAL |
-
1972
- 1972-03-21 GB GB1327772A patent/GB1383924A/en not_active Expired
- 1972-03-21 BE BE780992A patent/BE780992A/en not_active IP Right Cessation
- 1972-03-23 IT IT4918272A patent/IT952361B/en active
- 1972-03-23 DE DE19722214628 patent/DE2214628C3/en not_active Expired
- 1972-03-24 FR FR7210500A patent/FR2131618A5/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2121046A (en) * | 1982-05-14 | 1983-12-14 | Sekisui Plastics | Producing foamable olefin vinylaromatic resin particles |
Also Published As
Publication number | Publication date |
---|---|
DE2214628A1 (en) | 1972-10-05 |
DE2214628C3 (en) | 1981-02-05 |
FR2131618A5 (en) | 1972-11-10 |
IT952361B (en) | 1973-07-20 |
DE2214628B2 (en) | 1980-05-29 |
BE780992A (en) | 1972-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |