GB854586A - Improvements in or relating to extruded foamed polystyrene - Google Patents
Improvements in or relating to extruded foamed polystyreneInfo
- Publication number
- GB854586A GB854586A GB2022859A GB2022859A GB854586A GB 854586 A GB854586 A GB 854586A GB 2022859 A GB2022859 A GB 2022859A GB 2022859 A GB2022859 A GB 2022859A GB 854586 A GB854586 A GB 854586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- polystyrene
- acid
- exceeding
- weight
- 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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/127—Mixtures of organic and inorganic blowing agents
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
-
- 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
Abstract
An extruder foamed polystyrene which has an average cell size not exceeding 0,004 inch, an average cell wall thickness not exceeding 0,0004 inch and a density of from 0,75 to 8 lb/cu. ft. is produced as tube or film having a thickness of from 0,005 to 0,3 inch by extruding in a conventional extrusion apparatus using a cylinder temperature of 150 DEG to 260 DEG F. and a die temperature of 225 DEG to 290 DEG F. polystyrene in the form of particles which include from 4,5 to 9% of an aliphatic hydrocarbon (b.p. 30 DEG to 90 DEG C.) and which are homogeneously admixed with a CO2 liberating agent and an acid, the acid having at least 3,0 milli-equiv. of acetic hydrogen/gram, in sufficient amount so as to produce upon reaction a total of 5% by weight of water and CO2 based on the weight of polystyrene particles. For example, 0,5% of sodium bicarbonate and 0,4% of citric acid may be homogeneously mixed with the particles. The extrudate may be heated, e.g. by passing through a tank of hot water or a steam chamber, to expand it further, or it may be treated with a blast of cold air as it leaves the die orifice to cause the formation of a tough glazed skin.ALSO:An extruded foamed polystyrene which has an average cell size not exceeding 0,004 in., an average cell wall thickness not exceeding 0,0004 in. and a density of from 0,75 to 8 lb./cu. ft. is produced as tube or film having a thickness of from 0.005 to 0,3 in. by extruding in a conventional extrusion apparatus using a cylinder temperature of 150 DEG to 260 DEG F. and a die temperature of 225 DEG to 290 DEG F., polystyrene in the form of particles which include from 4,5 to 9% of an aliphatic hydrocarbon (b.p. 30 DEG to 90 DEG C.) and which are homogeneously admixed with a CO2 liberating agent and an acid, the acid having at least 3,0 milli-equiv. of acetic hydrogen/gram, in sufficient amount so as to produce upon reaction a total of 5% by weight of water and CO2 based on the weight of polystyrene particles. For example, 0,5% of sodium bicarbonate and 0,4% of citric acid may be homogeneously mixed with the particles. The extrudate may be heated, e.g. by passing through a tank of hot water or a steam chamber, to expand it further, or it may be treated with a blast of cold air as it leaves the die orifice to cause the formation of a tough glazed skin.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78093458A | 1958-12-17 | 1958-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB854586A true GB854586A (en) | 1960-11-23 |
Family
ID=25121139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2022859A Expired GB854586A (en) | 1958-12-17 | 1959-06-12 | Improvements in or relating to extruded foamed polystyrene |
Country Status (6)
Country | Link |
---|---|
CH (1) | CH406632A (en) |
DE (1) | DE1200534B (en) |
ES (1) | ES250614A1 (en) |
FR (1) | FR1242535A (en) |
GB (1) | GB854586A (en) |
NL (2) | NL244620A (en) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3151192A (en) * | 1961-07-24 | 1964-09-29 | Sun Chemical Corp | Method of extruding a foamed thermoplastic product |
US3194864A (en) * | 1961-12-11 | 1965-07-13 | Owens Illinois Glass Co | Method for producing cellular thermoplastic tubing without corrugations |
US3198859A (en) * | 1963-06-04 | 1965-08-03 | Avisun Corp | Method of forming foamed plastic articles |
US3222437A (en) * | 1962-06-18 | 1965-12-07 | Hercules Powder Co Ltd | Process for simultaneously molding and expanding stereoregular polypropylene to form a hinge |
US3227784A (en) * | 1961-12-07 | 1966-01-04 | Du Pont | Process for producing molecularly oriented structures by extrusion of a polymer solution |
US3248462A (en) * | 1962-10-22 | 1966-04-26 | Dow Chemical Co | Method for producing foamed sheet material having essentially equal tensile properties |
US3251911A (en) * | 1963-04-16 | 1966-05-17 | Bell Telephone Labor Inc | Preparation of expanded polymers |
US3253065A (en) * | 1963-08-07 | 1966-05-24 | Bell Telephone Labor Inc | Preparation of expanded polymers |
US3260781A (en) * | 1963-07-02 | 1966-07-12 | Haveg Industries Inc | Process for thermoforming a shrinkresistant foamed polystyrene cup |
US3268636A (en) * | 1963-07-01 | 1966-08-23 | Union Carbide Corp | Method and apparatus for injection molding foamed plastic articles |
US3275720A (en) * | 1963-04-30 | 1966-09-27 | Haveg Industries Inc | Method of extruding foamed fibers having outer skins integral therewith |
US3281513A (en) * | 1962-12-07 | 1966-10-25 | Tecalemit Engineering | Method of manufacturing a fluid filter |
US3299192A (en) * | 1963-06-11 | 1967-01-17 | Haveg Industries Inc | Method of extruding a foamed plastic tube having internal and external skins thereon |
US3310617A (en) * | 1963-06-19 | 1967-03-21 | Shell Oil Co | Process for preparing uniform melt dispersion of blowing agent and polymer and its use in making foamed products |
US3311681A (en) * | 1960-10-28 | 1967-03-28 | American Can Co | Method of extruding a foamed plastic sheet having a skin on one surface |
US3344215A (en) * | 1962-10-03 | 1967-09-26 | Shell Oil Co | Production of expanded thermoplastic product |
US3363034A (en) * | 1963-09-25 | 1968-01-09 | Haveg Industries Inc | The process of blow molding a hollow article from a tubular parison of a thermoplastic resin foam |
US3403203A (en) * | 1964-03-13 | 1968-09-24 | Grace W R & Co | Method for preparing a non-woven fabric-like member |
US3415913A (en) * | 1965-04-13 | 1968-12-10 | Haveg Industries Inc | Process for making a sewable polyethylene upholstery material |
US3424645A (en) * | 1963-04-30 | 1969-01-28 | Haveg Industries Inc | Extruded foamed fibers |
US3426111A (en) * | 1964-10-19 | 1969-02-04 | Dow Chemical Co | Method and apparatus for the production of foam plastic sheet |
US3444283A (en) * | 1965-11-08 | 1969-05-13 | Mobil Oil Corp | Method for direct injection extrusion of polystyrene foam |
US3466353A (en) * | 1966-11-29 | 1969-09-09 | Continental Can Co | Foamed resin extrusion process employing microencapsulated blowing agents |
US3542715A (en) * | 1964-01-24 | 1970-11-24 | Du Pont | Foamed strand of an organic polymeric material |
US3666162A (en) * | 1963-02-28 | 1972-05-30 | James R Tiffin | Foamed polymer cup and method for making same |
US4056587A (en) * | 1975-10-20 | 1977-11-01 | W. R. Grace & Co. | Process for expanding |
US4251006A (en) * | 1980-01-10 | 1981-02-17 | The Dow Chemical Company | Crate assembly and materials therefor |
US5162381A (en) * | 1991-12-10 | 1992-11-10 | Allied-Signal Inc. | Process for preparing thermalplastic foam |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144493A (en) * | 1959-10-19 | 1964-08-11 | Owens Illinois Glass Co | Method of forming partly foamed plastic articles |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1038275B (en) * | 1954-11-16 | 1958-09-04 | Koppers Co Inc | Process for the production of foam polystyrene molded articles |
-
0
- NL NL129996D patent/NL129996C/xx active
- NL NL244620D patent/NL244620A/xx unknown
-
1959
- 1959-06-12 GB GB2022859A patent/GB854586A/en not_active Expired
- 1959-07-07 ES ES0250614A patent/ES250614A1/en not_active Expired
- 1959-11-27 CH CH8117259A patent/CH406632A/en unknown
- 1959-12-01 FR FR811819A patent/FR1242535A/en not_active Expired
- 1959-12-03 DE DEK39335A patent/DE1200534B/en active Pending
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3311681A (en) * | 1960-10-28 | 1967-03-28 | American Can Co | Method of extruding a foamed plastic sheet having a skin on one surface |
US3151192A (en) * | 1961-07-24 | 1964-09-29 | Sun Chemical Corp | Method of extruding a foamed thermoplastic product |
US3227784A (en) * | 1961-12-07 | 1966-01-04 | Du Pont | Process for producing molecularly oriented structures by extrusion of a polymer solution |
US3194864A (en) * | 1961-12-11 | 1965-07-13 | Owens Illinois Glass Co | Method for producing cellular thermoplastic tubing without corrugations |
US3222437A (en) * | 1962-06-18 | 1965-12-07 | Hercules Powder Co Ltd | Process for simultaneously molding and expanding stereoregular polypropylene to form a hinge |
US3344215A (en) * | 1962-10-03 | 1967-09-26 | Shell Oil Co | Production of expanded thermoplastic product |
DE1504840B1 (en) * | 1962-10-03 | 1970-08-20 | Shell Int Research | Method and device for the production of tubular films from foamed polystyrene |
US3248462A (en) * | 1962-10-22 | 1966-04-26 | Dow Chemical Co | Method for producing foamed sheet material having essentially equal tensile properties |
US3281513A (en) * | 1962-12-07 | 1966-10-25 | Tecalemit Engineering | Method of manufacturing a fluid filter |
US3666162A (en) * | 1963-02-28 | 1972-05-30 | James R Tiffin | Foamed polymer cup and method for making same |
US3251911A (en) * | 1963-04-16 | 1966-05-17 | Bell Telephone Labor Inc | Preparation of expanded polymers |
US3275720A (en) * | 1963-04-30 | 1966-09-27 | Haveg Industries Inc | Method of extruding foamed fibers having outer skins integral therewith |
US3424645A (en) * | 1963-04-30 | 1969-01-28 | Haveg Industries Inc | Extruded foamed fibers |
US3198859A (en) * | 1963-06-04 | 1965-08-03 | Avisun Corp | Method of forming foamed plastic articles |
US3299192A (en) * | 1963-06-11 | 1967-01-17 | Haveg Industries Inc | Method of extruding a foamed plastic tube having internal and external skins thereon |
US3310617A (en) * | 1963-06-19 | 1967-03-21 | Shell Oil Co | Process for preparing uniform melt dispersion of blowing agent and polymer and its use in making foamed products |
US3268636A (en) * | 1963-07-01 | 1966-08-23 | Union Carbide Corp | Method and apparatus for injection molding foamed plastic articles |
US3260781A (en) * | 1963-07-02 | 1966-07-12 | Haveg Industries Inc | Process for thermoforming a shrinkresistant foamed polystyrene cup |
US3253065A (en) * | 1963-08-07 | 1966-05-24 | Bell Telephone Labor Inc | Preparation of expanded polymers |
US3363034A (en) * | 1963-09-25 | 1968-01-09 | Haveg Industries Inc | The process of blow molding a hollow article from a tubular parison of a thermoplastic resin foam |
US3542715A (en) * | 1964-01-24 | 1970-11-24 | Du Pont | Foamed strand of an organic polymeric material |
US3403203A (en) * | 1964-03-13 | 1968-09-24 | Grace W R & Co | Method for preparing a non-woven fabric-like member |
US3426111A (en) * | 1964-10-19 | 1969-02-04 | Dow Chemical Co | Method and apparatus for the production of foam plastic sheet |
US3415913A (en) * | 1965-04-13 | 1968-12-10 | Haveg Industries Inc | Process for making a sewable polyethylene upholstery material |
US3444283A (en) * | 1965-11-08 | 1969-05-13 | Mobil Oil Corp | Method for direct injection extrusion of polystyrene foam |
US3466353A (en) * | 1966-11-29 | 1969-09-09 | Continental Can Co | Foamed resin extrusion process employing microencapsulated blowing agents |
US4056587A (en) * | 1975-10-20 | 1977-11-01 | W. R. Grace & Co. | Process for expanding |
US4251006A (en) * | 1980-01-10 | 1981-02-17 | The Dow Chemical Company | Crate assembly and materials therefor |
US5162381A (en) * | 1991-12-10 | 1992-11-10 | Allied-Signal Inc. | Process for preparing thermalplastic foam |
Also Published As
Publication number | Publication date |
---|---|
CH406632A (en) | 1966-01-31 |
DE1200534B (en) | 1965-09-09 |
FR1242535A (en) | 1960-09-30 |
NL129996C (en) | |
NL244620A (en) | |
ES250614A1 (en) | 1959-12-16 |
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