Polyvinyl alcohol compositions

一种水溶液形式的聚乙烯醇组合物，包括聚乙烯醇、至少一种具有至少3个碳原子且以水溶性亚硫酸氢盐加合物形式完全掩蔽的多醛和至少一种在水中呈酸性的化合物，该组合物适合作为粘合剂和用作流延膜。 A polyvinyl alcohol (PVA) composition (I) in the form of an aqueous solution containing (a) PVA, (b) at least one poly-aldehyde with at least 3 carbon atoms, completely masked as a water-soluble hydrogen-sul...

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Bibliographische Detailangaben
Hauptverfasser:	R. GUTTE, M. JAKOB
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES GENERAL PROCESSES OF COMPOUNDING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS AS ADHESIVES WORKING-UP
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Beschreibung
Zusammenfassung:	一种水溶液形式的聚乙烯醇组合物，包括聚乙烯醇、至少一种具有至少3个碳原子且以水溶性亚硫酸氢盐加合物形式完全掩蔽的多醛和至少一种在水中呈酸性的化合物，该组合物适合作为粘合剂和用作流延膜。 A polyvinyl alcohol (PVA) composition (I) in the form of an aqueous solution containing (a) PVA, (b) at least one poly-aldehyde with at least 3 carbon atoms, completely masked as a water-soluble hydrogen-sulphite adduct and (c) at least one compound with an acid reaction in water. Also claimed are (i) processes for the production of (I), (ii) a homogeneous, solid, water-soluble PVA pre-mix containing components (a) and (b), and (iii) a process for the production of this pre-mix by mixing water-soluble PVA granules with an aqueous solution of component (b) and then drying the mixture.