IT1216719B - Composizioni termodegradabili abase di omo o copolimeri cristallini del propilene eprocedimento per effettuare la degradazione selettiva di tali omo e copolimeri. - Google Patents

Composizioni termodegradabili abase di omo o copolimeri cristallini del propilene eprocedimento per effettuare la degradazione selettiva di tali omo e copolimeri.

Info

Publication number
IT1216719B
IT1216719B IT8819233A IT1923388A IT1216719B IT 1216719 B IT1216719 B IT 1216719B IT 8819233 A IT8819233 A IT 8819233A IT 1923388 A IT1923388 A IT 1923388A IT 1216719 B IT1216719 B IT 1216719B
Authority
IT
Italy
Prior art keywords
omo
copolymers
thermodegradable
abase
propylene
Prior art date
Application number
IT8819233A
Other languages
English (en)
Other versions
IT8819233A0 (it
Inventor
Antonio Addeo
Annibale Vezzoli
Stefano Saccardi
Corrado Brichta
Original Assignee
Milano
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 Milano filed Critical Milano
Priority to IT8819233A priority Critical patent/IT1216719B/it
Publication of IT8819233A0 publication Critical patent/IT8819233A0/it
Priority to ES89101465T priority patent/ES2055748T3/es
Priority to BR898900349A priority patent/BR8900349A/pt
Priority to CA000589381A priority patent/CA1336217C/en
Priority to US07/302,191 priority patent/US4948820A/en
Priority to DE89101465T priority patent/DE68910991T2/de
Priority to EP89101465A priority patent/EP0326166B1/en
Priority to JP1020654A priority patent/JPH023439A/ja
Application granted granted Critical
Publication of IT1216719B publication Critical patent/IT1216719B/it

Links

Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S525/938—Polymer degradation

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Silicon Polymers (AREA)
IT8819233A 1988-01-28 1988-01-28 Composizioni termodegradabili abase di omo o copolimeri cristallini del propilene eprocedimento per effettuare la degradazione selettiva di tali omo e copolimeri. IT1216719B (it)

Priority Applications (8)

Application Number Priority Date Filing Date Title
IT8819233A IT1216719B (it) 1988-01-28 1988-01-28 Composizioni termodegradabili abase di omo o copolimeri cristallini del propilene eprocedimento per effettuare la degradazione selettiva di tali omo e copolimeri.
ES89101465T ES2055748T3 (es) 1988-01-28 1989-01-27 Composiciones termodegradables a base de homo- o copolimeros cristalinos y procedimiento para degradar estos polimeros.
BR898900349A BR8900349A (pt) 1988-01-28 1989-01-27 Composicoes termodegradaveis e processo para termodegradacao de homo-ou(co)polimeros cristalinos de propileno
CA000589381A CA1336217C (en) 1988-01-28 1989-01-27 Thermodegradable compositions based on crystalline homo-or copolymers of propylene and process for carrying out the selective degradation of such homo- and copolymers
US07/302,191 US4948820A (en) 1988-01-28 1989-01-27 Thermodegradable compositions based on crystalline homo- or copolymers of propylene and process for carrying out the selective degradation of such homo- and copolymers
DE89101465T DE68910991T2 (de) 1988-01-28 1989-01-27 Thermische Abbauzusammensetzungen aus kristallinen Homo- und Copolymeren von Propylen und Verfahren zum Abbau dieser Polymere.
EP89101465A EP0326166B1 (en) 1988-01-28 1989-01-27 Thermodegradable compositions based on crystalline homo- or copolymers of propylene and process for degrading such polymers
JP1020654A JPH023439A (ja) 1988-01-28 1989-01-30 プロピレンの結晶性単独重合体または共重合体をベースとする熱減成性組成物およびこのような単独重合体または共重合体の選択的減成の実施法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8819233A IT1216719B (it) 1988-01-28 1988-01-28 Composizioni termodegradabili abase di omo o copolimeri cristallini del propilene eprocedimento per effettuare la degradazione selettiva di tali omo e copolimeri.

Publications (2)

Publication Number Publication Date
IT8819233A0 IT8819233A0 (it) 1988-01-28
IT1216719B true IT1216719B (it) 1990-03-08

Family

ID=11155982

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8819233A IT1216719B (it) 1988-01-28 1988-01-28 Composizioni termodegradabili abase di omo o copolimeri cristallini del propilene eprocedimento per effettuare la degradazione selettiva di tali omo e copolimeri.

Country Status (8)

Country Link
US (1) US4948820A (it)
EP (1) EP0326166B1 (it)
JP (1) JPH023439A (it)
BR (1) BR8900349A (it)
CA (1) CA1336217C (it)
DE (1) DE68910991T2 (it)
ES (1) ES2055748T3 (it)
IT (1) IT1216719B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5194457A (en) * 1990-01-24 1993-03-16 Enimont Augusta Industriale S.R.L Zeolitic nucleants for crystalline polyolefines modified by means of macroradicalic degradation
IT1252388B (it) * 1991-11-12 1995-06-12 Sviluppo Settori Impiego Srl Polimeri e copolimeri del propilene aggraffati con vinilpolibutadiene e procedimento di preparazione
US5518730A (en) 1992-06-03 1996-05-21 Fuisz Technologies Ltd. Biodegradable controlled release flash flow melt-spun delivery system
IT1264437B1 (it) * 1993-05-13 1996-09-23 Spherilene Srl Polimeri del propilene aggraffati con polialchenileni e processo per la loro preparazione
US5814404A (en) * 1994-06-03 1998-09-29 Minnesota Mining And Manufacturing Company Degradable multilayer melt blown microfibers
DE69513417T2 (de) * 1994-10-12 2000-07-06 Kimberly-Clark Worldwide, Inc. Schmelz-extrudierbare, thermoplastische polypropylen zusammensetzung und daraus hergestellter vliesstoff
IT1272915B (it) * 1995-01-20 1997-07-01 Commer Spa Polimeri e copolimeri propilenici graffati
US5738745A (en) * 1995-11-27 1998-04-14 Kimberly-Clark Worldwide, Inc. Method of improving the photostability of polypropylene compositions
JP3358441B2 (ja) * 1996-06-04 2002-12-16 住友化学工業株式会社 ポリプロピレンブロック共重合体
US6967229B2 (en) 2003-07-07 2005-11-22 Acushnet Company Carbon-carbon initiators for use in golf balls
US9056227B2 (en) 2007-07-03 2015-06-16 Acushnet Company Golf ball comprising a core having a shallow hardness gradient
US8968117B2 (en) 2007-07-03 2015-03-03 Acushnet Company Dual-core comprising zero gradient center and positive gradient outer core layer

Family Cites Families (11)

* 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
DK107446C (da) * 1963-04-03 1967-05-29 Bayer Ag Fremgangsmåde til fremstilling af stabile forpolymerisater ved katalytisk polymerisation.
FR2094611A5 (it) * 1970-06-26 1972-02-04 Aquitaine Petrole
US3931355A (en) * 1971-12-24 1976-01-06 Bayer Aktiengesellschaft Radical-initiated polymerization reactions and mixture
US4360606A (en) * 1972-10-26 1982-11-23 Owens-Illinois, Inc. Photo-degradable polymer compositions
NL168232C (nl) * 1976-07-17 1982-03-16 Bayer Ag Werkwijze voor het bereiden van hardbare harsmengsels, werkwijze voor het bereiden van daarvoor als initiator geschikte silylethers, alsmede uit deze harsmengsels vervaardigde gevormde voortbrengselen.
DE3151444A1 (de) * 1981-12-24 1983-07-07 Bayer Ag, 5090 Leverkusen Neue silylether, verfahren zu ihrer herstellung und ihre verwendung als polymerisationsinitiatoren
EP0131323A1 (en) * 1983-07-11 1985-01-16 Akzo N.V. Process for the degradation of (co)polymers of propylene
US4535174A (en) * 1984-11-02 1985-08-13 General Electric Company Free-radical initiators and method for making
JPS61174203A (ja) * 1985-01-29 1986-08-05 Nippon Oil & Fats Co Ltd ポリプロピレンの分子量低下方法
US4675426A (en) * 1986-06-11 1987-06-23 General Electric Company Free-radical, initiators, curable compositions, and methods

Also Published As

Publication number Publication date
DE68910991T2 (de) 1994-03-24
EP0326166A2 (en) 1989-08-02
EP0326166B1 (en) 1993-12-01
ES2055748T3 (es) 1994-09-01
EP0326166A3 (en) 1990-10-24
DE68910991D1 (de) 1994-01-13
BR8900349A (pt) 1989-09-19
JPH023439A (ja) 1990-01-09
IT8819233A0 (it) 1988-01-28
US4948820A (en) 1990-08-14
CA1336217C (en) 1995-07-04

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