GB1033702A - Moulded articles comprising polystyrene - Google Patents

Moulded articles comprising polystyrene

Info

Publication number
GB1033702A
GB1033702A GB3222661A GB3222661A GB1033702A GB 1033702 A GB1033702 A GB 1033702A GB 3222661 A GB3222661 A GB 3222661A GB 3222661 A GB3222661 A GB 3222661A GB 1033702 A GB1033702 A GB 1033702A
Authority
GB
United Kingdom
Prior art keywords
polymer
polystyrene
chain
solid polyurethane
mixture
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
Application number
GB3222661A
Inventor
Ernest White Oak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanxess Urethanes UK Ltd
Original Assignee
Baxenden Chemicals Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Baxenden Chemicals Ltd filed Critical Baxenden Chemicals Ltd
Priority to GB3222661A priority Critical patent/GB1033702A/en
Publication of GB1033702A publication Critical patent/GB1033702A/en
Expired legal-status Critical Current

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
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • C08J9/236—Forming foamed products using binding 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
    • 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
    • C08J2325/06—Polystyrene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Moulded articles comprising polystyrene are made by coating particles of expanded polystyrene, preferably beads or kibbled pieces, with a liquid isocyanate - terminated prepolymer capable of forming a solid polyurethane by reaction with a chain-extending agent, especially water or water vapour, placing the coated particles in a mould or cavity, which may have a suitable release coating and there forming the solid polyurethane by reacting the pre-polymer of the coating with a chain-extending agent, e.g. by subjecting the mixture to the action of either steam or a gas substantially saturated with water vapour, so that the steam or water vapour reacts with the pre-polymer to form the solid polyurethane. The pre-polymer is preferably derived from an aromatic diisocyanate and a poly-oxyalkylene glycol of molecular weight between 2000 and 4000. Instead of a pre-polymer, the polystyrene particles may be coated with a mixture of monomers which, under the action of a chainextending agent, will form the solid polyurethane. In Example 1, kibbled expanded polystyrene material was mixed with a liquid polyurethane pre-polymer made from tolylene diisocyanate and a propylene glycol (having a molecular weight of about 2000). This mixture was inserted in a mould and steam introduced as the chain-extending agent.
GB3222661A 1961-09-07 1961-09-07 Moulded articles comprising polystyrene Expired GB1033702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3222661A GB1033702A (en) 1961-09-07 1961-09-07 Moulded articles comprising polystyrene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3222661A GB1033702A (en) 1961-09-07 1961-09-07 Moulded articles comprising polystyrene

Publications (1)

Publication Number Publication Date
GB1033702A true GB1033702A (en) 1966-06-22

Family

ID=10335272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3222661A Expired GB1033702A (en) 1961-09-07 1961-09-07 Moulded articles comprising polystyrene

Country Status (1)

Country Link
GB (1) GB1033702A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2279798A1 (en) * 1974-05-13 1976-02-20 Basf Ag FINE-DIVIDED EXPANDABLE STYRENE POLYMERS THAT CAN BE MOLDED WITH A MINIMUM STAY IN THE MOLD
US4241190A (en) * 1979-04-05 1980-12-23 Seymour Lichter Composite foamed material
US4240998A (en) * 1979-04-05 1980-12-23 Seymour Lichter Process for the production of composite foamed material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2279798A1 (en) * 1974-05-13 1976-02-20 Basf Ag FINE-DIVIDED EXPANDABLE STYRENE POLYMERS THAT CAN BE MOLDED WITH A MINIMUM STAY IN THE MOLD
US4241190A (en) * 1979-04-05 1980-12-23 Seymour Lichter Composite foamed material
US4240998A (en) * 1979-04-05 1980-12-23 Seymour Lichter Process for the production of composite foamed material

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