GB950292A - Cellular foamed articles from thermoplastic alkenyl aromatic polymers - Google Patents

Cellular foamed articles from thermoplastic alkenyl aromatic polymers

Info

Publication number
GB950292A
GB950292A GB43866/60A GB4386660A GB950292A GB 950292 A GB950292 A GB 950292A GB 43866/60 A GB43866/60 A GB 43866/60A GB 4386660 A GB4386660 A GB 4386660A GB 950292 A GB950292 A GB 950292A
Authority
GB
United Kingdom
Prior art keywords
indigo
flame
alkenyl aromatic
hydrogen
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
Application number
GB43866/60A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB950292A publication Critical patent/GB950292A/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
    • C08J9/0014—Use of organic additives
    • 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
    • C08J9/0014—Use of organic additives
    • C08J9/0028—Use of organic additives containing nitrogen
    • 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
    • C08J9/0014—Use of organic additives
    • C08J9/0033—Use of organic additives containing sulfur
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/02—Halogenated hydrocarbons
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/45—Heterocyclic compounds having sulfur in the ring
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00—Indigoid dyes
    • C09B7/06—Indone-thionapthene indigos
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00—Indigoid dyes
    • C09B7/10—Bis-thionapthene indigos
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Cellular thermoplastic polymers are made flame-resistant by incorporating in them an organic halogen-containing flame-proofing agent and, as a synergist, an indigo compound. The polymer is either (a) an alkenyl aromatic polymer (e.g. styrene, alpha-methyl styrene or a nuclear halogenated or alkylated derivative thereof) or a copolymer thereof with up to 50% of another monomer (e.g. acrylonitrile) or (b) a copolymer of 1-97% by weight of methyl methacrylate and 99-3% by weight of an alkenyl aromatic monomer. The flame-proofing agent is preferably a brominated aliphatic, cycloaliphatic or alkylaromatic hydrocarbon or aliphatic ether or ester (e.g. propionate or phosphate) containing at least 45% by weight of bromine. The indigo compound is preferably indigo white or an indigo derivative of formula: <FORM:0950292/C3/1> where R is an -NH- group or -S-; X and Y are hydrogen, halogen or lower alkyl; and Z is hydrogen, halogen or a radical of formula-SO3M where M is hydrogen or an alkali metal. The foamable composition may also include a hydrobromic acid acceptor (e.g. sodium acetate, magnesium oxide, magnesium hydroxide, zinc oxide, calcium oxide, calcium carbonate or sodium bicarbonate) or a surfaceactive agent (e.g. a sodium alkyl sulphonate, sodium lauryl sulphate or an alkyl phenyl polyethylene glycol ether) which latter may be added together with the indigo compound. The foam may be made by (1) feeding the granular polymer to a first section of an extruder where it is heated to about its melting temperature and forwarded through a sealing plate or disc into (2) a second section where it is mixed with a volatile liquid (e.g. an aliphatic hydrocarbon, ether or alhogenated hydrocarbon) and fed into (3) a mixing section where it is agitated and cooled and forwarded to a (4) a mixer cooler where the ingredients are thoroughly blended, brought to a uniform temperature between 60 DEG and 130 DEG C., under pressure, and (5) extruded into a zone of lower pressure (e.g. the atmosphere) to cause expansion of the extruded material. As an alternative to step (4), the extruded product may be quickly cooled and then crushed or ground to form latent foaming granules. The flame-proofing agent and the indigo compound may be added at any point prior to extrusion. Examples describe the production of polystyrene foams.
GB43866/60A 1959-12-24 1960-12-21 Cellular foamed articles from thermoplastic alkenyl aromatic polymers Expired GB950292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86176359A 1959-12-24 1959-12-24

Publications (1)

Publication Number Publication Date
GB950292A true GB950292A (en) 1964-02-26

Family

ID=25336692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43866/60A Expired GB950292A (en) 1959-12-24 1960-12-21 Cellular foamed articles from thermoplastic alkenyl aromatic polymers

Country Status (5)

Country Link
DE (1) DE1181403B (en)
ES (1) ES263525A1 (en)
FR (1) FR1282232A (en)
GB (1) GB950292A (en)
NL (1) NL130684C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158086A (en) * 1977-08-03 1979-06-12 Basf Aktiengesellschaft Flameproof thermoplastic molding material

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL295196A (en) * 1962-07-11
FR1486273A (en) * 1965-07-09 1967-10-05
DE1260136B (en) * 1965-07-21 1968-02-01 Basf Ag Molding compounds for the production of self-extinguishing moldings
DE1244395B (en) * 1965-08-25 1967-07-13 Basf Ag Molding compounds for the production of self-extinguishing moldings
US3770668A (en) * 1970-10-29 1973-11-06 Dow Chemical Co Styrene polymer foam and the preparation thereof
US4778619A (en) * 1985-03-22 1988-10-18 Matsushita Electric Industrial Co., Ltd. Liquid crystal compositions
RU2047643C1 (en) * 1993-05-21 1995-11-10 Хан Ир Гвон Material for polarizing coating

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857342A (en) * 1956-04-25 1958-10-21 Monsanto Chemicals Steeping process for the preparation of foamable styrene polymer particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158086A (en) * 1977-08-03 1979-06-12 Basf Aktiengesellschaft Flameproof thermoplastic molding material

Also Published As

Publication number Publication date
ES263525A1 (en) 1961-03-16
NL259410A (en) 1964-04-10
DE1181403B (en) 1964-11-12
FR1282232A (en) 1962-01-19
NL130684C (en) 1971-05-13

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