Interpolymers of ethylene with vinyl esters and products therefrom

Polymers and interpolymers of vinyl esters of monocarboxylic acids are heated with a strong base in a medium containing at least 10 per cent of a saturated secondary or tertiary alcohol of from 3 to 6 carbon atoms until between 10 and 80 per cent of the ester groups have been hydrolysed. Vinyl ester...

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Bibliographische Detailangaben
1. Verfasser:	JR. JOHN R. ROLAND
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS APPARATUS SPECIALLY ADAPTED THEREFOR AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ELECTROGRAPHY GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS THEREFOR METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS ORIGINALS THEREFOR PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS SPINNING TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Polymers and interpolymers of vinyl esters of monocarboxylic acids are heated with a strong base in a medium containing at least 10 per cent of a saturated secondary or tertiary alcohol of from 3 to 6 carbon atoms until between 10 and 80 per cent of the ester groups have been hydrolysed. Vinyl esters specified are vinyl formate, acetate, chloroacetate, propionate, butyrate, isobutyrate, stearate, palmitate, myristate, benzoate, toluate, cyclohexanoate, naphthoate and campholate. The interpolymers contain less than 20 mols of other polymerizable compound, for example, ethylene, propylene, isobutylene, acrylonitrile, methacrylonitrile, vinyl and vinylidene chlorides, per mol of vinyl ester; alcohols specified are isopropyl, sec.- and tert.-butyl, sec.-amyl, sec.-hexyl alcohols and cyclohexanol. Other solvents, e.g. benzene, toluene and chlorinated hydrocarbons may be present. The base may be ammonium, sodium, potassium, lithium, calcium or barium hydroxide; sodium, potassium or lithium carbonate; methylamine, dimethylamine, trimethylamine; guanidine; tetramethylammonium and trimethylsulphonium hydroxides. The solvents are removed from the hydrolysed products by evaporation, steam distillation, extraction with water or precipitation by addition of a non-solvent. The products may be plasticized if desired and used as safety glass interlayers, adhesives, coatings for fabric, paper, regenerated cellulose and polyvinyl alcohol films, and for making fibres and films. They may be cured by means of cross-linking agents.