GB1263340A - A process for obtaining pearls of expanded polystyrene - Google Patents

A process for obtaining pearls of expanded polystyrene

Info

Publication number
GB1263340A
GB1263340A GB942869A GB942869A GB1263340A GB 1263340 A GB1263340 A GB 1263340A GB 942869 A GB942869 A GB 942869A GB 942869 A GB942869 A GB 942869A GB 1263340 A GB1263340 A GB 1263340A
Authority
GB
United Kingdom
Prior art keywords
pearls
steam
expanded
matured
expanded polystyrene
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
GB942869A
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
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 claimed from FR13184A external-priority patent/FR1440075A/en
Priority claimed from FR128060A external-priority patent/FR93618E/en
Application filed by Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Publication of GB1263340A publication Critical patent/GB1263340A/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
    • 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
    • B29C44/3461—Making or treating expandable particles

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

1,263,340. Pearls of expanded polystyrene. COMPAGNIE DE SAINT GOBAIN. 21 Feb., 1969 [27 March, 1968], No. 9428/69. Addition to 1,082,630. Headings C3C and C3P. Pearls of expanded polystyrene are made from polystyrene granules containing a blowing agent, by heating the granules with air at 90- 130‹ C. and treating them with steam (as in Specification 1,082,630) and then treating the pearls in an autoclave with steam. The granules may be pre-expanded with saturated steam, expanded with the hot air followed by saturated steam, matured, expanded with the hot air followed by superheated steam, matured, treated with steam in the autoclave and finally matured: the maturing may be effected by standing at 70‹ C. or room temperature. The pearls may have an apparent bulk density of 2À5 kg./m.<SP>3</SP> and may be agglomerated to form articles, e.g. panels or shaped pieces.
GB942869A 1965-04-14 1969-02-21 A process for obtaining pearls of expanded polystyrene Expired GB1263340A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR13184A FR1440075A (en) 1965-04-14 1965-04-14 Process for obtaining expanded polystyrene beads
FR128060A FR93618E (en) 1965-04-14 1967-11-14 Process for obtaining expanded polystyrene beads.
FR145567A FR94246E (en) 1965-04-14 1968-03-27 Process for obtaining expanded polystyrene beads.

Publications (1)

Publication Number Publication Date
GB1263340A true GB1263340A (en) 1972-02-09

Family

ID=8648110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB942869A Expired GB1263340A (en) 1965-04-14 1969-02-21 A process for obtaining pearls of expanded polystyrene

Country Status (5)

Country Link
BE (1) BE730508A (en)
DE (1) DE1911511C3 (en)
FR (1) FR94246E (en)
GB (1) GB1263340A (en)
NL (1) NL6904441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992010534A1 (en) * 1989-11-23 1992-06-25 Markus Stracke Method and device for producing and processing fillers
EP0976694A1 (en) * 1998-07-31 2000-02-02 Basf Aktiengesellschaft Insulating leightweight plaster

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992010534A1 (en) * 1989-11-23 1992-06-25 Markus Stracke Method and device for producing and processing fillers
AT401774B (en) * 1989-11-23 1996-11-25 Markus Ing Stracke METHOD FOR PRODUCING INGREDIENTS FOR LIGHT CONCRETE
EP0976694A1 (en) * 1998-07-31 2000-02-02 Basf Aktiengesellschaft Insulating leightweight plaster

Also Published As

Publication number Publication date
NL6904441A (en) 1969-09-30
DE1911511B2 (en) 1978-07-27
BE730508A (en) 1969-09-26
DE1911511A1 (en) 1970-09-17
FR94246E (en) 1969-07-18
DE1911511C3 (en) 1979-03-22

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