FR2375268A1 - Matieres a mouler resistant au choc a basse temperature, a base de polypropylene - Google Patents

Matieres a mouler resistant au choc a basse temperature, a base de polypropylene

Info

Publication number
FR2375268A1
FR2375268A1 FR7738432A FR7738432A FR2375268A1 FR 2375268 A1 FR2375268 A1 FR 2375268A1 FR 7738432 A FR7738432 A FR 7738432A FR 7738432 A FR7738432 A FR 7738432A FR 2375268 A1 FR2375268 A1 FR 2375268A1
Authority
FR
France
Prior art keywords
low temperature
polypropylene
weight
temperature impact
block
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.)
Granted
Application number
FR7738432A
Other languages
English (en)
Other versions
FR2375268B1 (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.)
Dart Industries Inc
Original Assignee
Dart Industries 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
Application filed by Dart Industries Inc filed Critical Dart Industries Inc
Publication of FR2375268A1 publication Critical patent/FR2375268A1/fr
Application granted granted Critical
Publication of FR2375268B1 publication Critical patent/FR2375268B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L23/30—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by oxidation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
    • C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking

Abstract

Résine à mouler à base de polypropylène ayant une résistance au choc améliorée à basse température. Cette résine est obtenue à partir d'un copolymère séquencé ayant une vitesse d'écoulement à l'état fondu d'environ 0,5 à 1,5 g/10 minutes à 230 degrés C et qui contient d'environ 60 à 95 % en poids d'une séquence de polypropylène et d'environ 5 à 40 % en poids d'une séquence d'un copolymère statistique de l'éthylène et d'une autre alpha-oléfine, dont 30 à 60 % en poids de motifs dérivent de l'éthylène, ce copolymère séquencé est soumis à dégradation oxydante par contact avec de l'oxygène, de l'air ou un peroxyde dans une zone où il est en même temps soumis à des effets de cisaillement puissants. En raison de sa haute résistance au choc à basse température, la résine à mouler selon l'invention peut être utilisée dans des applications qui, auparavant, étaient exclues pour le polypropylene.
FR7738432A 1976-12-21 1977-12-20 Matieres a mouler resistant au choc a basse temperature, a base de polypropylene Granted FR2375268A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/753,060 US4061694A (en) 1976-12-21 1976-12-21 Low temperature impact strength molding compositions

Publications (2)

Publication Number Publication Date
FR2375268A1 true FR2375268A1 (fr) 1978-07-21
FR2375268B1 FR2375268B1 (fr) 1980-06-06

Family

ID=25028987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738432A Granted FR2375268A1 (fr) 1976-12-21 1977-12-20 Matieres a mouler resistant au choc a basse temperature, a base de polypropylene

Country Status (10)

Country Link
US (1) US4061694A (fr)
JP (1) JPS5379988A (fr)
BE (1) BE862065A (fr)
CA (1) CA1102042A (fr)
DE (1) DE2756498A1 (fr)
DK (1) DK568977A (fr)
FR (1) FR2375268A1 (fr)
GB (1) GB1555190A (fr)
NO (1) NO152511C (fr)
SE (1) SE422949B (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150764U (fr) * 1981-03-16 1982-09-21
JPS5876444A (ja) * 1981-10-30 1983-05-09 Mitsubishi Chem Ind Ltd プロピレン−エチレンブロツク共重合体の改質法
FR2519007B1 (fr) * 1981-12-24 1985-12-27 Charbonnages Ste Chimique Copolymeres modifies de l'ethylene et d'au moins une a-olefine et procede pour leur preparation
US4375531A (en) * 1982-01-11 1983-03-01 Northern Petrochemical Company High impact visbroken polymeric blends
NO834504L (no) * 1983-01-20 1984-07-23 El Paso Polyolefins Propylenkopolymerer med forbedret slagfasthet
US4578431A (en) * 1983-08-31 1986-03-25 Mobil Oil Corporation Process for improving melt strength of ethylene polymers by treatment with organic peroxide
US4578430A (en) * 1984-12-19 1986-03-25 Shell Oil Company Controlled degradation or cracking of alpha-olefin polymers
JPS61211306A (ja) * 1985-03-15 1986-09-19 Idemitsu Petrochem Co Ltd 改質ポリプロピレン樹脂の製造方法
US4734448A (en) * 1985-07-10 1988-03-29 Idemitsu Petrochemical Co., Ltd. Propylene polymer composition
US4677025A (en) * 1985-08-30 1987-06-30 Shell Oil Company Unique molecular weight distribution polybutylene blend and film
DE3742845C2 (de) * 1987-12-17 1996-07-11 Danubia Petrochem Deutschland Verfahren zur Herstellung von faserverstärkten Polypropylenbahnen sowie faserverstärkte Polypropylenbahnen
EP0351208A3 (fr) * 1988-07-15 1992-06-10 Exxon Chemical Patents Inc. Compositions polymères résistant aux chocs
US5066723A (en) * 1988-07-15 1991-11-19 Exxon Chemical Patents Inc. Impact-modified polymers (p-1304)
US5030694A (en) * 1989-11-22 1991-07-09 Kelley Joseph M High impact thermoplastic polymer compositions
US5246779A (en) * 1992-08-10 1993-09-21 Quantum Chemical Corporation Microfine propylene polymer powders and process for their preparation
US5443898A (en) * 1993-06-29 1995-08-22 Fiberweb North America, Inc. Nonwoven webs and method of making same
DE4432798A1 (de) * 1994-09-15 1996-03-21 Basf Ag Hochflexible Propylen-Ethylen-Copolymerisate
US5574082A (en) * 1995-05-25 1996-11-12 Quantum Chemical Company Propylene polymer compositions having improved color and stabilizers therefor.
DE69914383T3 (de) † 1999-11-12 2010-11-25 Borealis Technology Oy Heterophasische copolymere
EP1186618A1 (fr) * 2000-09-08 2002-03-13 ATOFINA Research Polymères hétérophasiques de propylène à rhéologie réglable
US6803421B2 (en) * 2002-11-12 2004-10-12 Equister Chemicals, Lp High flow filled propylene polymer compositions having improved impact and dimensional properties
CN103878997B (zh) 2003-01-16 2018-05-08 伟华软管有限公司 用于形成具有改进抗环境应力龟裂性的制品的方法、组合物和共混物
MX2011013792A (es) * 2009-06-23 2012-01-30 Dow Global Technologies Llc Polipropileno de reologia controlada.
KR20160101953A (ko) 2013-12-19 2016-08-26 다우 글로벌 테크놀로지스 엘엘씨 C-c 개시제에 의한 프로필렌-계 중합체의 비스브레이킹 방법
WO2021126763A1 (fr) * 2019-12-19 2021-06-24 Exxonmobil Chemical Patents Inc. Composition d'élastomère à base de propylène fonctionnalisé et son procédé de préparation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144436A (en) * 1961-01-04 1964-08-11 Du Pont Process for degrading stereoregular polymers
US3341621A (en) * 1963-05-31 1967-09-12 Eastman Kodak Co Thermally degraded block copolymers of propylene and 1-butene
US3349018A (en) * 1963-10-28 1967-10-24 Union Carbide Corp Controllable degradation of alpha-olefin polymers using irradiation
US3911052A (en) * 1973-03-12 1975-10-07 Dart Ind Inc Block copolymers of ethylene and propylene and process for their manufacture

Also Published As

Publication number Publication date
CA1102042A (fr) 1981-05-26
BE862065A (fr) 1978-04-14
SE422949B (sv) 1982-04-05
JPS5379988A (en) 1978-07-14
SE7714540L (sv) 1978-06-22
NO774386L (no) 1978-06-22
JPS5535401B2 (fr) 1980-09-13
GB1555190A (en) 1979-11-07
NO152511C (no) 1985-10-09
DE2756498A1 (de) 1978-06-22
FR2375268B1 (fr) 1980-06-06
DK568977A (da) 1978-06-22
NO152511B (no) 1985-07-01
US4061694A (en) 1977-12-06

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TP Transmission of property
TP Transmission of property
ST Notification of lapse