BR9804755A - Método de preparação de policarbonatos por polimerização de estado sólido - Google Patents

Método de preparação de policarbonatos por polimerização de estado sólido

Info

Publication number
BR9804755A
BR9804755A BR9804755-8A BR9804755A BR9804755A BR 9804755 A BR9804755 A BR 9804755A BR 9804755 A BR9804755 A BR 9804755A BR 9804755 A BR9804755 A BR 9804755A
Authority
BR
Brazil
Prior art keywords
solid
state polymerization
preparing polycarbonates
polycarbonates
solvent
Prior art date
Application number
BR9804755-8A
Other languages
English (en)
Inventor
Bhaskar Bhairavnath Idage
Swaminathan Sivaram
Godavarthi Satyana Varadarajan
Joseph Anthony King Jr.
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of BR9804755A publication Critical patent/BR9804755A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/04—Aromatic polycarbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

Patente de Invenção:<B>"MéTODO DE PREPARAçãO DE POLICARBONATOS POR POLIMERIZAçãO DE ESTADO SóLIDO"<D>. A cristalização de policarbonatos precursores antes da polimerização de estado sólido é conseguida pelo contato com um não-solvente compreendendo, pelo menos em parte, um carbonato de dialquila tal como o carbonato dimetila. O não-solvente poderá ser uma mistura, tipicamente de carbonato dimetila com água ou um alcanol, tal como o metanol.
BR9804755-8A 1997-11-07 1998-11-05 Método de preparação de policarbonatos por polimerização de estado sólido BR9804755A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN2107CA1997 1997-11-07

Publications (1)

Publication Number Publication Date
BR9804755A true BR9804755A (pt) 1999-12-14

Family

ID=11087246

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9804755-8A BR9804755A (pt) 1997-11-07 1998-11-05 Método de preparação de policarbonatos por polimerização de estado sólido

Country Status (3)

Country Link
JP (1) JPH11199665A (pt)
KR (1) KR19990045077A (pt)
BR (1) BR9804755A (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1198865C (zh) * 1998-11-09 2005-04-27 通用电气公司 增强聚碳酸酯类的结晶度的方法
US6222001B1 (en) * 1999-08-10 2001-04-24 General Electric Company Method of crystallizing polycarbonate prepolymer

Also Published As

Publication number Publication date
KR19990045077A (ko) 1999-06-25
JPH11199665A (ja) 1999-07-27

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements