FR2353592A1 - Pyrophoric styrene polymer particle size classification - comprises treating polymer with metal salt solns. - Google Patents

Pyrophoric styrene polymer particle size classification - comprises treating polymer with metal salt solns.

Info

Publication number
FR2353592A1
FR2353592A1 FR7716094A FR7716094A FR2353592A1 FR 2353592 A1 FR2353592 A1 FR 2353592A1 FR 7716094 A FR7716094 A FR 7716094A FR 7716094 A FR7716094 A FR 7716094A FR 2353592 A1 FR2353592 A1 FR 2353592A1
Authority
FR
France
Prior art keywords
styrene
particle size
pyrophoric
pref
polymer
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.)
Withdrawn
Application number
FR7716094A
Other languages
French (fr)
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.)
Huels AG
Original Assignee
Chemische Werke Huels AG
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 Chemische Werke Huels AG filed Critical Chemische Werke Huels AG
Publication of FR2353592A1 publication Critical patent/FR2353592A1/en
Withdrawn legal-status Critical Current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
    • C08J9/224—Surface treatment
    • 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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Pyrophoric expandible styrene polymers are classified in terms of particle size by treatment with metallic salt solns. Such polymers are obtd. by suspension polymerisation of styrene or mixt. of styrene with minor quantities of cpds. polymerisable with styrene, pref. acrylonitrile, butadiene, (meth)acrylates, polybutadiene, butadiene-styrene copolymers and satd. and unsatd. copolymers of ethylene and propylene. Polymers are obtd. as particles of 0.1-3.5 mm dia. (pref. 0-5-2). Pref. metallic salts are CaCl2, CaBr2, MgCl2, Ca(OAc)2, K2CO3, Al(OAc)3, alums and mixts. of these salts. Salts are used as aq. solns. at loading of 0.001-0.5 wt. % on polymer (pref. 0.005-0.2). Polymer particle size is controlled.
FR7716094A 1976-06-05 1977-05-26 Pyrophoric styrene polymer particle size classification - comprises treating polymer with metal salt solns. Withdrawn FR2353592A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2625389A DE2625389C3 (en) 1976-06-05 1976-06-05 Process for the improved classification of expandable, small-particle styrene polymers

Publications (1)

Publication Number Publication Date
FR2353592A1 true FR2353592A1 (en) 1977-12-30

Family

ID=5979923

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7716094A Withdrawn FR2353592A1 (en) 1976-06-05 1977-05-26 Pyrophoric styrene polymer particle size classification - comprises treating polymer with metal salt solns.

Country Status (6)

Country Link
BE (1) BE855388A (en)
DE (1) DE2625389C3 (en)
FI (1) FI771778A (en)
FR (1) FR2353592A1 (en)
NL (1) NL7706166A (en)
SE (1) SE7706464L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599066A1 (en) * 1992-10-29 1994-06-01 The Geon Company Process for imparting electrostatic dissipative properties to recycled plastics and articles made therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0599066A1 (en) * 1992-10-29 1994-06-01 The Geon Company Process for imparting electrostatic dissipative properties to recycled plastics and articles made therefrom

Also Published As

Publication number Publication date
SE7706464L (en) 1977-12-06
DE2625389A1 (en) 1977-12-08
DE2625389C3 (en) 1978-11-16
NL7706166A (en) 1977-12-07
FI771778A (en) 1977-12-06
DE2625389B2 (en) 1978-03-23
BE855388A (en) 1977-12-05

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