A kind of thermoplastic polyvinyl alcohol resin and preparation method thereof

A technology of polyvinyl alcohol resin and polyvinyl alcohol, which is applied in the field of water-soluble thermoplastic polyvinyl alcohol resin and its preparation at room temperature, and can solve the problem of non-environmental protection of thermoplastic polyvinyl alcohol resin, yellowing of modified polyvinyl alcohol resin, and affecting products Quality and other issues, to achieve the effect of good resin lubricity, high decomposition temperature, and environmental protection
CN105440522BActive Publication Date: 2018-08-31CHINA PETROCHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROCHEMICAL CORP
Publication Date
2018-08-31

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Abstract

A normal temperature water-soluble thermoplastic polyvinyl alcohol resin, which is composed of effective doses of polyvinyl alcohol, plasticizer, soft water and processing aids, the degree of polymerization of the polyvinyl alcohol is 1000-2400, 72 (mol)% ≤ degree of alcoholysis <90 (mol)%, the plasticizer is at least one of glycerol, polyethylene glycol, and triethylene glycol diisocaprylate, and the processing aid is talcum powder, At least one of silicon oxide, oleic acid amide, and saturated aliphatic dicarboxylic acid ester. Thermoplastic polyvinyl alcohol resin has a melting temperature of 120-180°C, dissolves in water at 15-40°C, and has a decomposition temperature above 260°C. It is colorless, transparent, and non-yellowing, with excellent quality.
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Description

technical field

[0001] The invention relates to a thermoplastic polyvinyl alcohol resin, in particular to a normal temperature water-soluble thermoplastic polyvinyl alcohol resin and a preparation method thereof. Background technique

[0002] Polyvinyl alcohol (PVA) is a polymer material with excellent performance and a wide range of uses. Because polyvinyl alcohol has the structural characteristics of polyhydric groups and strong hydrogen bonds, it has many excellent properties and is widely used in coatings, adhesives, etc. agent, paper sizing agent and other fields. The use of polyvinyl alcohol resin to prepare films or profiles is a new direction for the application of polyvinyl alcohol resins. Films or profiles made of PVA have excellent oxygen resistance, oil resistance, no static electricity, no dust absorption, and high strength. And under certain conditions, it has water solubility and biodegradability. Therefore, the film or profile made of polyvinyl alcohol is ex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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