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1. WO2002018138 - DIENOPHILE ADDITIVES TO POLYVINYLIDENE CHLORIDE COPOLYMERS

Publication Number WO/2002/018138
Publication Date 07.03.2002
International Application No. PCT/US2001/026689
International Filing Date 28.08.2001
Chapter 2 Demand Filed 22.03.2002
IPC
B32B 27/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
18characterised by the use of special additives
B32B 27/30 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
30comprising vinyl resin; comprising acrylic resin
CPC
B29K 2027/08
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2027Use of polyvinylhalogenides ; or derivatives thereof; as moulding material
08PVDC, i.e. polyvinylidene chloride
B32B 27/18
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
18characterised by the use of special additives
B32B 27/30
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
30comprising vinyl ; (co)polymers; comprising acrylic (co)polymers
Y10T 428/1379
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
13Hollow or container type article [e.g., tube, vase, etc.]
1352Polymer or resin containing [i.e., natural or synthetic]
1379Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
Y10T 428/1383
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
13Hollow or container type article [e.g., tube, vase, etc.]
1352Polymer or resin containing [i.e., natural or synthetic]
1379Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
1383Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer]
Y10T 428/2907
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
2904Staple length fiber
2907with coating or impregnation
Applicants
  • PECHINEY EMBALLAGE FLEXIBLE EUROPE [FR]/[FR] (AllExceptUS)
  • KAAS, Roger [US]/[US] (UsOnly)
  • MUELLER, Chad [US]/[US] (UsOnly)
Inventors
  • KAAS, Roger
  • MUELLER, Chad
Agents
  • DUNCAN, Margaret, M.
Priority Data
09/649,89528.08.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIENOPHILE ADDITIVES TO POLYVINYLIDENE CHLORIDE COPOLYMERS
(FR) ADDITIFS DIENOPHILES POUR COPOLYMERES DE CHLORURE DE POLYVINYLIDENE
Abstract
(EN)
A flexible film for packaging articles such as food is provided. The film comprises a layer of polyvinylidene ('PVdC') homopolymer, polyvinylidene and methyl acrylate ('PVdC-MA') copolymer or other polyvinylidene chloride copolymer. A dienophile such as, for example, ethyl trans-cinnamate, methyl transcinnamate, dibutyl maleate, dimethyl maleate or maleic anhydride is blended with the PVdC polymer or PVdC-MA copolymer to reduce yellowing of the film caused by degradation of the PVdC or PVdC-MA through heat or electron beam irradiation. Preferably a range of about .05 % and about 5 % by weight of the dienophile is added to the PVdC or PVdC-MA.
(FR)
L'invention concerne un film flexible permettant d'empaqueter des articles tels que de la nourriture. Ce film comprend une couche d'homopolymère de polyvinylidène (PVdC), de copolymère de polyvinylidène et méthyle acrylate (PVdC-MA) ou d'un autre copolymère de chlorure de polyvinylidène. Un diénophile comme, par exemple, un éthyle trans-cinnamate, un méthyle trans-cinnamate, un dibutyle maléate, un diméthyle maléate ou un anhydride maléique est mélangé avec le polymère PVdC ou le copolymère PVdC-MA pour réduire le jaunissement du film provoqué par la dégradation du PVdC ou du PVdC-MA sous l'effet de la chaleur ou de l'exposition à des faisceaux d'électrons. De préférence, une quantité approximative comprise entre 0,05 % et 5 % en poids du diénophile est ajoutée au PVdC ou au PVdC-MA.
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