Polyvinyl alcohol composition, preparation method thereof, and polyvinyl alcohol medical catheter containing thereof

a polyvinyl alcohol and composition technology, applied in the field of macromolecular polymers, can solve the problems of difficult thermoplastic processing, limited application of polyvinyl alcohol, poor processability, etc., and achieve the effect of facilitating melt processing, reducing the melting point of polyethylene alcohol composition, and enhancing the processability of polyvinyl alcohol composition

Active Publication Date: 2020-08-27
XIAMEN SIBIKON NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for improved properties like flexibility or durability when forming materials through chemical reactions between different components within it. It also enhances its ability to dissolve during heat treatment without losing their effectiveness due to high temperatures involved. Additionally, this material makes things easier to work with because it doesn't stick out easily on surfaces they come into contact.

Problems solved by technology

This patented technical problem addressed by the present patents relates to improving the properties of polypvrolene (PVL) that can be mold into various types of products like films with excellent waterproof qualities without being too hard due to its low glass transition temperatures.

Method used

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  • Polyvinyl alcohol composition, preparation method thereof, and polyvinyl alcohol medical catheter containing thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037]A polyvinyl alcohol composition having the components of the raw materials shown in table 1 was prepared, in which the acid is aliphatic carboxylic acid, the polymerization degree of the polyvinyl alcohol is 7,000, and the alcoholysis degree is 99%.

[0038]The polyvinyl alcohol composition was prepared as follows: step 1: polyvinyl alcohol, glycerol, calcium chloride, and the acid were mixed, extruded with an extruder, and pelletized with a pelletizer to obtain an acidic polyvinyl alcohol material, in which the extruder is a twin screw extruder, the length diameter ratio is 40-60:1, and the temperature inside the extruder is 160-220° C.

[0039]Step 2: glutaraldehyde and the acidic polyvinyl alcohol material obtained in step 1 were mixed and extruded with an extruder to obtain an intermediate material of the polyvinyl alcohol composition, in which the temperature inside the extruder is 160-220° C.

[0040]Step 3: the intermediate material of the polyvinyl alcohol composition from step 2

example 2

[0042]A polyvinyl alcohol composition having the components of the raw materials shown in table 1 was prepared, in which the acid is pyrophosphoric acid, the polymerization degree of the polyvinyl alcohol is 6,000, and the alcoholysis degree is 80%.

[0043]The polyvinyl alcohol composition was prepared as follows: step 1: the polyvinyl alcohol, urea, glycerol, calcium chloride, and the acid were mixed, extruded with an extruder, and pelletized with a pelletizer to obtain an acidic polyvinyl alcohol material, in which the extruder is a twin screw extruder, the length diameter ratio is 40-60:1, and the temperature inside the extruder is 150-180° C.

[0044]Step 2: glutaraldehyde and the acidic polyvinyl alcohol material obtained in step 1 were mixed and extruded with an extruder to obtain an intermediate material of the polyvinyl alcohol composition, in which the temperature inside the extruder is 150-180° C.

[0045]Step 3: the intermediate material of the polyvinyl alcohol composition from ste

example 3

[0047]A polyvinyl alcohol composition having components of the raw materials of the polyvinyl alcohol composition shown in table 1 was prepared, in which the acid is disulfuric acid, the polymerization degree of the polyvinyl alcohol is 4,000, and the alcoholysis degree is 70%.

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Abstract

The present application discloses a polyvinyl alcohol composition, as well as a preparation method and polyvinyl alcohol medical catheter containing thereof, wherein raw materials include the following components: 60-90 parts of polyvinyl alcohol; 0.1-3 parts of glutaraldehyde; and the polyvinyl alcohol composition is made by mixing the polyvinyl alcohol in molten state with the glutaraldehyde in an acidic environment.

Description

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Claims

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Application Information

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Owner XIAMEN SIBIKON NEW MATERIAL CO LTD
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