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1. WO1997038049 - BLENDS OF AND METHODS OF BLENDING OLEFIN/ESTER COPOLYMERS HAVING IMPROVED ENVIRONMENTAL STRESS CRACKING OR ENVIRONMENTAL FATIGUE RESISTANCE, PRODUCTS MADE THEREFROM, METHODS OF MOLDING SAID PRODUCTS

Publication Number WO/1997/038049
Publication Date 16.10.1997
International Application No. PCT/US1997/005617
International Filing Date 03.04.1997
Chapter 2 Demand Filed 29.10.1997
IPC
C08L 23/08 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
CPC
C08L 2205/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2205Polymer mixtures characterised by other features
02containing two or more polymers of the same C08L -group
C08L 2205/03
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2205Polymer mixtures characterised by other features
03containing three or more polymers in a blend
C08L 23/0815
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
0815Copolymers of ethene with aliphatic 1-olefins
C08L 23/0853
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
0846Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
0853Vinylacetate
Applicants
  • THE PROCTER & GAMBLE COMPANY [US]/[US]
Inventors
  • O'DONNELL, Hugh, Joseph
Agents
  • REED , T., David
Priority Data
60/014,62204.04.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BLENDS OF AND METHODS OF BLENDING OLEFIN/ESTER COPOLYMERS HAVING IMPROVED ENVIRONMENTAL STRESS CRACKING OR ENVIRONMENTAL FATIGUE RESISTANCE, PRODUCTS MADE THEREFROM, METHODS OF MOLDING SAID PRODUCTS
(FR) MELANGES ET PROCEDES DE MELANGE DE COPOLYMERES OLEFINE/ESTER QUI POSSEDENT UNE PLUS GRANDE RESISTANCE AUX CONTRAINTES DE FISSURATION ET A LA FATIGUE EN EXTERIEUR, ARTICLES FAITS DE CES POLYMERS ET PROCEDES DE MOULAGE DE CES ARTICLES
Abstract
(EN)
A blend and flexible product made of two copolymers of an olefin and an ethylenically unsaturated carboxylic ester monomer. The copolymers are selected such that each copolymer includes greater than 6 weight percent ethylenically unsaturated carboxylic ester monomer, or selected to be more than 10 weight percent of the blend. If the copolymers have similar ester contents, that is differing by less than 6 weight percent, the copolymers are selected such that their difference in their melt flows is greater than about 8. If the copolymers have dissimilar ester contents, that is differing by more than 6 weight percent, the copolymers are selected such that the ratio of their melt flows is about 2 or less.
(FR)
Cette invention concerne un mélange et un article flexible se composant de deux copolymères d'un oléfine et d'un monomère d'ester carboxylique non saturé en éthylène. Ces copolymères sont choisis de manière à ce que chacun d'entre eux comprenne plus de 6 % en poids d'un monomère d'ester carboxylique non saturé en éthylène ou, encore, de manière à ce qu'ils représentent plus de 10 % en poids du mélange. Dans le cas où ils possèdent des contenus en ester similaires ou, plus préciséement, qui diffèrent de moins de 6 % en poids, les copolymères sont choisis de manière à ce qu'ils présentent une différence, entre leurs flux à l'état fondu, qui soit supérieure à 8 environ. Dans le cas où ils possèdent des contenus en ester non similaires ou, plus précisément, qui diffèrent de plus de 6 % en poids, ces copolymères sont choisis de manière à ce que le rapport entre leurs flux à l'état fondu soit inférieur ou égal à 2 environ.
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