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GB1482818A - Process for producing expandable styrene-polymer bit-pieces - Google Patents

Process for producing expandable styrene-polymer bit-pieces

Info

Publication number
GB1482818A
GB1482818A GB11494/75A GB1149475A GB1482818A GB 1482818 A GB1482818 A GB 1482818A GB 11494/75 A GB11494/75 A GB 11494/75A GB 1149475 A GB1149475 A GB 1149475A GB 1482818 A GB1482818 A GB 1482818A
Authority
GB
United Kingdom
Prior art keywords
polymer
pieces
bit
impregnant
aqueous solution
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
GB11494/75A
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.)
Sealed Air Corp
Original Assignee
Sealed Air Corp
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
Priority to DE19752511315 priority Critical patent/DE2511315A1/en
Application filed by Sealed Air Corp filed Critical Sealed Air Corp
Priority to GB11494/75A priority patent/GB1482818A/en
Publication of GB1482818A publication Critical patent/GB1482818A/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
    • C08J9/16—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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/009—Use of pretreated compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
    • 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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

1482818 Expandable styrene & substituted styrene polymers SEALED AIR CORP 19 March 1975 11494/75 Heading C3C Expandable discrete bit-pieces (i.e. freeflowing forms) of styrene-polymer (i.e. including substituted styrene polymers) impregnated with a liquid aliphatic or cycloaliphatic impregnant which volatizes below the polymer's Vicat softening point and is a hydrocarbon, chlorinated hydrocarbon or mixture thereof, the polymer being insoluble in the impregnant, are made by mixing the styrene-polymer bit-pieces in an impregnator chamber which is cylindrically shaped, free of internal moving parts, and can be hermetically sealed, with the impregnant and an aqueous solution of a water-soluble emulsifying agent, there being sufficient emulsifying agent to emulsify the impregnant in the aqueous solution, hermetically sealing the impregnator chamber after filling it with the aqueous solution, rotating the closed impregnator chamber around an axis of rotation intersecting perpendicularly the longitudinal central axis of the cylinder at or adjacent the midpoint of the axis, at a speed sufficient to maintain the bit-pieces in agitation, while heating the aqueous solution by indirect heat exchange to a temperature between 40‹ C. and a temperature below the second order transition point of the polymer until the bit-pieces have become impregnated with the impregnant while remaining free from agglomeration and separating the impregnated bit-pieces from the liquid phase. In the examples pellets or grind of polystyrene or copolymers of styrene and acrylonitrile, n-butyl acrylate or α-methylstyrene were impregnated with pentane in an aqueous aqueous solution of a mixture of the mono- and di-phosphate ester of an ethoxylated alkyl phenol containing potassium persulphate, sodium bisulphite, sodium pyrophosphate, α,α<SP>1</SP>- azobisisobutyronitrile, anhydrous aluminium silicate coated with a polymer made by moisturehydrolysis of vinyl tris(2-methoxyethyoxy)- silane and/or tris(2,3-dibromopropyl)phosphate, and the expandable pellets were expanded in boiling water.
GB11494/75A 1975-03-19 1975-03-19 Process for producing expandable styrene-polymer bit-pieces Expired GB1482818A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19752511315 DE2511315A1 (en) 1975-03-19 1975-03-14 METHOD OF MANUFACTURING FOAMABLE STYLE POLYMER PIECES
GB11494/75A GB1482818A (en) 1975-03-19 1975-03-19 Process for producing expandable styrene-polymer bit-pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11494/75A GB1482818A (en) 1975-03-19 1975-03-19 Process for producing expandable styrene-polymer bit-pieces

Publications (1)

Publication Number Publication Date
GB1482818A true GB1482818A (en) 1977-08-17

Family

ID=9987283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11494/75A Expired GB1482818A (en) 1975-03-19 1975-03-19 Process for producing expandable styrene-polymer bit-pieces

Country Status (2)

Country Link
DE (1) DE2511315A1 (en)
GB (1) GB1482818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415744A2 (en) * 1989-08-30 1991-03-06 Jsp Corporation Process for the production of expanded particles of a polyolefin resin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE429238B (en) * 1978-06-08 1983-08-22 Kema Nord Ab SET TO REDUCE MONOMER CONTENT IN EXPANDABLE TERMOPLASTES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415744A2 (en) * 1989-08-30 1991-03-06 Jsp Corporation Process for the production of expanded particles of a polyolefin resin
EP0415744A3 (en) * 1989-08-30 1992-05-27 Jsp Corporation Process for the production of expanded particles of a polyolefin resin
EP0684273A1 (en) * 1989-08-30 1995-11-29 Jsp Corporation Process for the production of expanded particles of a polyolefin resin

Also Published As

Publication number Publication date
DE2511315A1 (en) 1976-09-23

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed