GB1462651A - Moulding composition and process - Google Patents

Moulding composition and process

Info

Publication number
GB1462651A
GB1462651A GB188474A GB188474A GB1462651A GB 1462651 A GB1462651 A GB 1462651A GB 188474 A GB188474 A GB 188474A GB 188474 A GB188474 A GB 188474A GB 1462651 A GB1462651 A GB 1462651A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
acrylonitrile
forming operation
forming
methacrylonitrile
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
GB188474A
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.)
Monsanto Co
Original Assignee
Monsanto 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
Priority claimed from US05/323,772 external-priority patent/US4052348A/en
Priority claimed from US323771A external-priority patent/US3870802A/en
Application filed by Monsanto Co filed Critical Monsanto Co
Publication of GB1462651A publication Critical patent/GB1462651A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08K5/04—Oxygen-containing compounds
    • C08K5/07—Aldehydes; Ketones
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/18—Homopolymers or copolymers of nitriles
    • C08L33/20—Homopolymers or copolymers of acrylonitrile
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/02—Condensation polymers of aldehydes or ketones only

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)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Wrappers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Packages (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

1462651 Reducing the HCN content of nitrile polymers during extrusion MONSANTO CO 15 Jan 1974 [15 Jan 1973] 1884/74 Heading B5A [Also in Division C3] In the production of shaped packaging materials from nitrile polymers containing 55- 85 wt. per cent of nitrile monomer units selected from acrylonitrile and acrylonitrile/methacrylonitrile mixtures containing up to 16 wt. per cent acrylonitrile based on total polymer weight by processes involving at least one forming operation comprising melting and shaping of the polymer, there is present during at least one forming operation either formaldehyde or a compound which releases formaldehyde, in an amount sufficient to reduce the extractable HCN content of the resulting material, preferably to below 50 parts per billion. Numerous formaldehyde donors are mentioned, including formaldehyde itself, paraformaldehyde, trioxane, tetraoxane, hexamethylene tetramine, sodium formaldehyde sulphoxylate or bisulphate, ptoluene sulphonamide-formaldehyde, dimethylol urea, and condensates of formaldehyde with an alcohol, and urea, melamine or phenol. The packaging material, especially intended for food or drink, may take the form of film, sheet, bottle, can or jar; and the forming operation may be pelletizing, extrusion, blow moulding, injection moulding, parison forming, vacuum forming or thermoforming. In examples, the polymers used are acrylonitrile/styrene, acrylonitrile/methyl methacrylate and acrylonitrile/ methacrylonitrile/styrene copolymers. Rubber impact modifiers are present in some cases, and the compositions may also contain other conventional additives.
GB188474A 1973-01-15 1974-01-15 Moulding composition and process Expired GB1462651A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/323,772 US4052348A (en) 1973-01-15 1973-01-15 Molding compositions
US323771A US3870802A (en) 1973-01-15 1973-01-15 Packaging nitrile containing resins

Publications (1)

Publication Number Publication Date
GB1462651A true GB1462651A (en) 1977-01-26

Family

ID=26984145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB188474A Expired GB1462651A (en) 1973-01-15 1974-01-15 Moulding composition and process

Country Status (8)

Country Link
JP (1) JPS557862B2 (en)
CA (1) CA1033870A (en)
DE (1) DE2401787C3 (en)
DK (1) DK137994B (en)
FR (1) FR2213952B1 (en)
GB (1) GB1462651A (en)
NO (1) NO140471C (en)
SE (1) SE395010B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH072895B2 (en) * 1984-03-01 1995-01-18 日本ゼオン株式会社 Impact resistant phenolic resin composition

Also Published As

Publication number Publication date
DE2401787A1 (en) 1974-07-18
DE2401787C3 (en) 1979-08-16
CA1033870A (en) 1978-06-27
JPS49109441A (en) 1974-10-17
JPS557862B2 (en) 1980-02-28
NO740106L (en) 1974-07-16
AU6450174A (en) 1975-07-17
DK137994B (en) 1978-06-19
FR2213952A1 (en) 1974-08-09
NO140471C (en) 1979-09-05
DE2401787B2 (en) 1978-11-23
DK137994C (en) 1978-11-13
SE395010B (en) 1977-07-25
NO140471B (en) 1979-05-28
FR2213952B1 (en) 1977-09-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee