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1. WO1999006484 - VINYLIDENE CHLORIDE RESIN COMPOSITIONS, PROCESS FOR PRODUCING THE SAME, AND FILM OF THE SAME

Publication Number WO/1999/006484
Publication Date 11.02.1999
International Application No. PCT/JP1998/003230
International Filing Date 17.07.1998
Chapter 2 Demand Filed 19.11.1998
IPC
C08J 5/18 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
C08K 5/17 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5Use of organic ingredients
16Nitrogen-containing compounds
17Amines; Quaternary ammonium compounds
CPC
C08J 2327/08
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2327Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
02not modified by chemical after-treatment
04containing chlorine atoms
08Homopolymers or copolymers of vinylidene chloride
C08J 5/18
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
C08K 5/175
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
5Use of organic ingredients
16Nitrogen-containing compounds
17Amines; Quaternary ammonium compounds
175containing COOH-groups; Esters or salts thereof
Applicants
  • KUREHA KAGAKU KOGYO KABUSHIKI KAISHA [JP]/[JP] (AT, BE, CH, CN, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, JP, KR, LU, MC, NL, PT, SE, VN)
  • HOSHINO, Mitsuru [JP]/[JP] (UsOnly)
  • SHIBATA, Shusaku [JP]/[JP] (UsOnly)
Inventors
  • HOSHINO, Mitsuru
  • SHIBATA, Shusaku
Agents
  • KAWAGUCHI, Yoshio
Priority Data
9/20817401.08.1997JP
9/27014902.10.1997JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) VINYLIDENE CHLORIDE RESIN COMPOSITIONS, PROCESS FOR PRODUCING THE SAME, AND FILM OF THE SAME
(FR) COMPOSITIONS DE RESINES DE CHLORURE DE VINYLIDENE, PROCEDE POUR LES PRODUIRE ET FILM A BASE DE CES COMPOSITIONS
Abstract
(EN) Vinylidene chloride copolymer resin compositions excellent in thermal stability during extrusion molding and reduced in discoloration caused by thermal deterioration. One of the compositions comprises a vinylidene chloride resin, an ethylenediaminetetraacetic acid salt, and a salt of an organic weak acid. The process for producing the vinylidene chloride resin composition comprises polymerizing vinylidene chloride monomer with at least one ethylenediaminetetraacetic acid salt in the presence of at least one organic weak acid salt at a pH of the polymerization system of 3 or higher and regulating the pH of the aqueous phase at completion of the polymerization to 3 to 6. Another of the compositions comprises a vinylidene chloride copolymer and a salt of a weak acid, the copolymer having a reduced viscosity of 0.040 to 0.057 l/g and the salt being one selected from the group consisting of salts of organic weak acids containing no nitrogen atom and inorganic phosphoric acid salts, and is excellent in productivity in extrusion. The film is obtained by extruding this vinylidene chloride resin composition by using a vacuum hopper.
(FR) Cette invention se rapporte à des compositions de résines copolymères de chlorure de vinylidène, ayant une excellente stabilité thermique lors du moulage par extrusion et un ternissage réduit sous l'effet de la détérioration thermique. L'une de ces compositions contient une résine de chlorure de vinylidène, un sel d'acide éthylèndiaminetétraacétique, et une sel d'un acide faible organique. Le procédé pour produire une telle composition de résine de chlorure de vinylidène consiste à polymériser un monomère de chlorure de vinylidène avec au moins un sel d'acide d'éthylèndiaminetétraacétique en présence d'au moins un sel d'acide faible organique à un pH du système de polymérisation égal ou supérieur à 3 et à régler le pH de la phase aqueuse à la fin de la polymérisation sur une valeur comprise entre 3 et 6. Une autre de ces compositions contient un copolymère de chlorure de vinylidène et un sel d'un acide faible, le copolymère ayant une viscosité réduite comprise entre 0,040 et 0,057 l/g et le sel étant choisi dans le groupe des sels d'acides faibles organiques ne contenant pas d'atome d'azote et des sels d'acide phosphorique, une telle composition se caractérisant par une excellente productivité lors de l'extrusion. On obtient le film faisant l'objet de cette invention en extrudant une telle composition de résine de chlorure de vinylidène en utilisant une trémie sous vide d'air.
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