GB1005901A - Process for making a foamable polymeric composition in pellet form - Google Patents
Process for making a foamable polymeric composition in pellet formInfo
- Publication number
- GB1005901A GB1005901A GB34541/62A GB3454162A GB1005901A GB 1005901 A GB1005901 A GB 1005901A GB 34541/62 A GB34541/62 A GB 34541/62A GB 3454162 A GB3454162 A GB 3454162A GB 1005901 A GB1005901 A GB 1005901A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinyl
- ethyl
- methyl
- ether
- acetate
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
-
- 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
Abstract
Foamable thermoplastic polymeric strands S are extruded and chilled whilst passing through grooves in endless surfaces, e.g. rollers or belts and are then cut into pellets. In an example, the material may be polystyrene with 4% by weight of pentane. The material may also be cellulose ethers and esters, e.g. ethyl cellulose, and cellulose acetate or homopolymers and interpolymers of monomers having the CH2=C grouping such as olefins, e.g. ethylene, isobutylene, vinyl halides, e.g. vinyl chloride, vinylidene chloride; vinyl esters of carboxylic acids, e.g. vinyl acetate, butyrate, stearate, bensoate; vinyl ethers, e.g. vinyl methyl ether, ethyl ether or isobutyl ether, unsaturated carboxylic acids and derivatives thereof, e.g. acrylic acid, methacrylic acid, methylacrylate, ethyl acrylate, methyl methacrylate, acrylamide, acrylonitrile, methacrylonitrile and interpolymers of the vinylidene monomers with polycarboxylic acids or derivatives thereof, e.g. maleic anhydride, diethyl maleate, dibutyl fumerate or diallyl or dipropyl maleate, styrene, o-, p-, 25-dichloro or 2,4-dichlorostyrene, p-methyl- or p-ethyl-styrene, vinyl napthalene, alpha-methylstyrene, and blends of styrene with natural or butadiene-acrylonitrile rubbers. The foaming agent may be pentane, hexane, heptane, petroleum ether, cyclopentane, cyclopentadiene, acetone, methanol, methyl acetate, ethyl acetate, methyl formate, ethyl formate, dichloroethylene, isopropyl chloride, propionaldehyde and diisopropyl ether. The focusing agent may be used in an amount from 2 1/2 to 10% by weight.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US210910A US3250834A (en) | 1962-07-19 | 1962-07-19 | Method for making foamable polystrene pellets |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1005901A true GB1005901A (en) | 1965-09-29 |
Family
ID=22784808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34541/62A Expired GB1005901A (en) | 1962-07-19 | 1962-09-10 | Process for making a foamable polymeric composition in pellet form |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1005901A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0820846A1 (en) * | 1996-07-24 | 1998-01-28 | FERIOLI FILIPPO S.r.l. | Pelletizer for plastics |
-
1962
- 1962-09-10 GB GB34541/62A patent/GB1005901A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0820846A1 (en) * | 1996-07-24 | 1998-01-28 | FERIOLI FILIPPO S.r.l. | Pelletizer for plastics |
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