ES238197A1 - Método de producir articulos moldeados a partir de polipropileno altamente cristalino - Google Patents

Método de producir articulos moldeados a partir de polipropileno altamente cristalino

Info

Publication number
ES238197A1
ES238197A1 ES0238197A ES238197A ES238197A1 ES 238197 A1 ES238197 A1 ES 238197A1 ES 0238197 A ES0238197 A ES 0238197A ES 238197 A ES238197 A ES 238197A ES 238197 A1 ES238197 A1 ES 238197A1
Authority
ES
Spain
Prior art keywords
polypropylene
crystalline polymers
articles molded
amorphous
molded therefrom
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
ES0238197A
Other languages
English (en)
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of ES238197A1 publication Critical patent/ES238197A1/es
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Método de producir artículos moldeados a partir de polipropileno altamente cristalino, fundiendo el polipropileno y enfriándolo al estado sólido en un molde, en cuyo método el polipropileno es calentado a una temperatura que no excede de 2.00 f y es enfriado al estado sólido desde una temperatura comprendida en la gama de temperaturas de 1.25 f a 2.00 f, siendo f la temperatura de fusión óptica del polipropileno expresada en grados centígrados.
ES0238197A 1956-10-23 1957-10-22 Método de producir articulos moldeados a partir de polipropileno altamente cristalino Expired ES238197A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1556056 1956-10-23

Publications (1)

Publication Number Publication Date
ES238197A1 true ES238197A1 (es) 1958-07-01

Family

ID=38530329

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0238197A Expired ES238197A1 (es) 1956-10-23 1957-10-22 Método de producir articulos moldeados a partir de polipropileno altamente cristalino

Country Status (6)

Country Link
US (1) US3025572A (es)
AT (1) AT212002B (es)
CH (1) CH357186A (es)
ES (1) ES238197A1 (es)
FR (1) FR1184477A (es)
GB (1) GB828033A (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2742042A1 (de) * 1977-09-19 1979-03-29 Siemens Ag Verfahren zur herstellung von kunststoffisolierkoerpern mit schirmen fuer den innenraum- und freilufteinsatz
US4357288A (en) * 1980-02-25 1982-11-02 Deacon Machinery, Inc. Method of making clear transparent polypropylene containers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB513742A (en) * 1938-04-19 1939-10-20 Archibald Renfrew Improvements in and relating to moulding polymerised ethylene
US2624916A (en) * 1951-02-19 1953-01-13 Du Pont Glossy molding process for ethylene polymers
US2791576A (en) * 1956-01-12 1957-05-07 Standard Oil Co Process of polymerizing olefins with group 6a oxide

Also Published As

Publication number Publication date
GB828033A (en) 1960-02-10
AT212002B (de) 1960-11-25
US3025572A (en) 1962-03-20
CH357186A (de) 1961-09-30
FR1184477A (fr) 1959-07-22

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