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1. WO1996004326 - STRONG CARBOXYLIC ACID FUNCTIONAL POLYURETHANE POLYMERS AND BLENDS THEREOF USED IN MAGNETIC RECORDING MEDIA

Publication Number WO/1996/004326
Publication Date 15.02.1996
International Application No. PCT/US1995/009543
International Filing Date 27.07.1995
Chapter 2 Demand Filed 19.02.1996
IPC
C08G 18/62 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
62Polymers of compounds having carbon-to-carbon double bonds
C08G 18/81 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
81Unsaturated isocyanates or isothiocyanates
C08G 18/83 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
83Chemically modified polymers
G11B 5/702 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
62Record carriers characterised by the selection of the material
68comprising one or more layers of magnetisable particles homogeneously mixed with a bonding agent
70on a base layer
702characterised by the bonding agent
CPC
C08G 18/6204
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
62Polymers of compounds having carbon-to-carbon double bonds
6204Polymers of olefins
C08G 18/6245
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
62Polymers of compounds having carbon-to-carbon double bonds
6216Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
622Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
6245Polymers having terminal groups containing active hydrogen
C08G 18/8108
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
81Unsaturated isocyanates or isothiocyanates
8108having only one isocyanate or isothiocyanate group
C08G 18/8175
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
81Unsaturated isocyanates or isothiocyanates
8141masked
815Polyisocyanates or polyisothiocyanates masked with unsaturated compounds having active hydrogen
8158with unsaturated compounds having only one group containing active hydrogen
8175with esters of acrylic or alkylacrylic acid having only one group containing active hydrogen
C08G 18/831
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
83Chemically modified polymers
831by oxygen-containing compounds inclusive of carbonic acid halogenides, carboxylic acid halogenides and epoxy halides
G11B 5/7022
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
62Record carriers characterised by the selection of the material
68comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
70on a base layer
702characterised by the bonding agent
7021containing a polyurethane or a polyisocyanate
7022containing mixtures of polyurethanes or polyisocyanates with other polymers
Applicants
  • MINNESOTA MINING AND MANUFACTURING COMPANY [US/US]; 3M Center P.O. Box 33427 Saint Paul, MN 55133-3427, US
Inventors
  • CARLSON, James, G.; US
  • ANDERSON, Jeffrey, T.; US
  • ROTTO, Nelson, T.; US
Agents
  • DOWDALL, Janice, L. ; Minnesota Mining and Manufacturing Company Office of Intellectual Property Counsel P.O. Box 33427 Saint Paul, MN 55133-3427, US
  • CABINET REGIMBEAU; 26, avenue Kleber F-75116 Paris, FR
Priority Data
08/283,24429.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) STRONG CARBOXYLIC ACID FUNCTIONAL POLYURETHANE POLYMERS AND BLENDS THEREOF USED IN MAGNETIC RECORDING MEDIA
(FR) POLYMERES FONCTIONNELS DE POLYURETHANE D'ACIDE CARBOXYLIQUE FORT ET LEURS MELANGES UTILISES DANS DES SUPPORTS D'ENREGISTREMENTS MAGNETIQUES
Abstract
(EN)
The invention provides novel hydroxyl functional polyurethanes which can be used in magnetic media binders applications. The polyurethanes comprise strong carboxylic acid groups pendant from the polymer backbone, which groups can be produced by esterification of backbone hydroxyl moieties with cyclic dicarboxylic acid anhydrides. Examples of anhydrides useful in preparation of the polyurethanes include anhydrides of tetrachlorophthalic acid, tetrafluorophthalic acid, and dichloromaleic acid, etc. The polyurethanes, which are optionally radiation curable, show high affinity for magnetic pigments, and blends of the polyurethanes with vinyl and non-vinyl resins afford excellent binders for magnetic recording media.
(FR)
L'invention concerne de nouveaux polyuréthanes fonctionnels d'hydroxyle qu'on peut utiliser en tant que liants dans des supports magnétiques. Ces polyuréthanes comprennent des groupes d'acide carboxylique fort suspendus au squelette du polymère et pouvant s'obtenir par estérification de fractions hydroxyle du squelette avec des anhydrides cycliques d'acide dicarboxylique. Des exemples d'anhydrides s'utilisant pour préparer les polyuréthanes sont représentés par des anhydrides d'acide tétrachlorophthalique, d'acide tétrafluorophthalique et d'acide dichloromaléique, entre autres. Ces polyuréthanes, qui peuvent éventuellement être durcis sous l'effet d'un rayonnement, présentent de fortes affinités pour des pigments magnétiques et des mélanges desdits polyuréthanes avec des résines vinyliques ou non vinyliques constituent d'excellents liants pour des supports d'enregistrements magnétiques.
Also published as
KR1019970700310
Latest bibliographic data on file with the International Bureau