CA2207807C - Compositions de polymeres thermoplastiques et procede de moulage de pieces a faible retrait - Google Patents

Compositions de polymeres thermoplastiques et procede de moulage de pieces a faible retrait Download PDF

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Publication number
CA2207807C
CA2207807C CA002207807A CA2207807A CA2207807C CA 2207807 C CA2207807 C CA 2207807C CA 002207807 A CA002207807 A CA 002207807A CA 2207807 A CA2207807 A CA 2207807A CA 2207807 C CA2207807 C CA 2207807C
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CA
Canada
Prior art keywords
composition
shrinkage
plastomer
amount
set forth
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 - Fee Related
Application number
CA002207807A
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English (en)
Other versions
CA2207807A1 (fr
Inventor
Terrence Huff
James John Mcalpin
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.)
ExxonMobil Chemical Patents Inc
Original Assignee
ExxonMobil Chemical Patents Inc
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 US08/357,635 external-priority patent/US5747592A/en
Application filed by ExxonMobil Chemical Patents Inc filed Critical ExxonMobil Chemical Patents Inc
Publication of CA2207807A1 publication Critical patent/CA2207807A1/fr
Application granted granted Critical
Publication of CA2207807C publication Critical patent/CA2207807C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3044—Bumpers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
    • C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Ethylene-propylene or ethylene-propylene-diene copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2314/00—Polymer mixtures characterised by way of preparation
    • C08L2314/06—Metallocene or single site catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Composition de polymères thermoplastiques comportant au moins environ 50 % en poids de polypropylène, au moins environ 20 % en poids d'un élastomère tel que du caoutchouc EP et au moins environ 4 % en poids d'un plastomère. Ledit plastomère est de préférence un copolymère à base d'éthylène catalysé en un seul site présentant une densité de moins 0,915 g/cm<3>. En ajustant la quantité de plastomère de la composition, on maîtrise efficacement le retrait après moulage de pièces produites par moulage par injection utilisant ladite composition. Cette même composition qui peut être produite sous forme de mélange produit en réacteur ou de mélange fondu, est particulièrement utile pour la fabrication de pièces de grandes dimensions telles que des pare-chocs ou des garnitures décoratives extérieures pour automobiles.
CA002207807A 1994-12-16 1995-12-14 Compositions de polymeres thermoplastiques et procede de moulage de pieces a faible retrait Expired - Fee Related CA2207807C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/357,635 US5747592A (en) 1994-12-16 1994-12-16 Thermoplastic polymer compositions and their production and use
US08/357,635 1994-12-16
PCT/US1995/016239 WO1996019533A1 (fr) 1994-12-16 1995-12-14 Compositions de polymeres thermoplastiques et procede de moulage de pieces a faible retrait

Publications (2)

Publication Number Publication Date
CA2207807A1 CA2207807A1 (fr) 1996-06-27
CA2207807C true CA2207807C (fr) 2006-10-31

Family

ID=37395786

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002207807A Expired - Fee Related CA2207807C (fr) 1994-12-16 1995-12-14 Compositions de polymeres thermoplastiques et procede de moulage de pieces a faible retrait

Country Status (1)

Country Link
CA (1) CA2207807C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110540711B (zh) * 2018-05-29 2022-05-10 合肥杰事杰新材料股份有限公司 一种低后收缩聚丙烯材料及其制备方法

Also Published As

Publication number Publication date
CA2207807A1 (fr) 1996-06-27

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