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Surface processed plastic product and surface processing method

A plastic product and surface treatment technology, which is applied in thin material processing, transportation and packaging, application, etc., can solve the problems of wettability change, plastic product material quality deterioration, etc.

Inactive Publication Date: 2005-02-23
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned conventional techniques improve wettability, however, there is still a problem that the material quality of plastic products deteriorates due to oxygen
Beyond that, there is an obvious problem: wettability changes over time due to washing and prolonged use, thus becoming hydrophobic

Method used

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  • Surface processed plastic product and surface processing method
  • Surface processed plastic product and surface processing method
  • Surface processed plastic product and surface processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 60 parts by weight of tris(trimethylsiloxy) silyl propyl methacrylate (abbreviated as TRIS), 40 parts by weight of N,N-dimethylacrylamide (abbreviated as DMAA), 1 weight part 10 parts by weight of triethylene glycol dimethacrylate (abbreviated as 3G) and 10 parts by weight of diglyme (abbreviated as Diglyme) were uniformly mixed. After adding thereto 0.2 parts by weight of "Darocur 1173" manufactured by Ciba Specialty Chemicals as a polymerization initiator, the resulting monomer mixture was degassed in an argon atmosphere. The degassed monomer mixture was injected between plastic molds and sealed in a dry box under nitrogen atmosphere. Then, use the insect-catching lamp to illuminate at an illumination of 1mW / cm 2 irradiated for 30 minutes to carry out polymerization. Subsequently, the mold including the obtained plastic was immersed in diglyme for 30 minutes at 40° C., and in addition, it was immersed at 60° C. for 60 minutes, and then, the obtained plastic product ...

Embodiment 2

[0058] A surface-treated plastic product was prepared in the same manner as in Example 1, except that the aqueous solution containing polyacrylic acid in Example 1 was changed to an aqueous solution containing 20% ​​by weight of polyacrylic acid having an average molecular weight of 5,000 at pH 2.0. The water content, dynamic contact angle, wettability, modulus and elongation at break of the obtained plastic products are shown in Table 1.

Embodiment 3

[0060] A surface-treated plastic product was prepared in the same manner as in Example 1, except that the aqueous solution containing polyacrylic acid in Example 1 was changed to an aqueous solution containing 1.2% by weight of polyacrylic acid having an average molecular weight of 250,000 at pH 3.1. The water content, dynamic contact angle, wettability, modulus and elongation at break of the obtained plastic products are shown in Table 1.

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Abstract

The present invention relates to a surface-treated plastic article including a thin layer composed of a polymer complex on the surface. The surface-treated plastic article can be produced by a treatment with at least one kind of aqueous solutions of polymers having a weight average molecular weight of 200 or more. According to the present invention, the plastic articles, such as contact lenses, having superior transparency, wettability, oxygen permeability, and mechanical properties can be provided.

Description

technical field [0001] The invention relates to a method for surface treatment of plastic products and a surface-treated plastic product. In particular, the present invention relates to a surface-treated plastic product having excellent hydrophilicity, i.e. wettability, and excellent anti-sedimentation property, i.e. lipid fouling resistance, etc., which is subjected to surface treatment. Disposal without reducing its performance as a plastic product. In particular, the plastic articles surface-treated according to the invention are suitable for contact lenses and intraocular lenses, or medical components such as catheters and artificial kidneys. Background technique [0002] In recent years, plastic products have been used for a variety of purposes. Among them, plastic products containing silicon or fluorine are used for contact lenses due to their excellent oxygen permeability. [0003] However, plastic products containing silicon or fluorine are insufficient in wettabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/16C08J7/048C08J7/056G02B1/04
CPCG02B1/043C08J7/04C08J2300/14A61M1/16Y10T428/31667Y10T428/31935Y10T428/31928C08J7/048C08J7/056G02B1/12C08G18/10C08J7/16
Inventor 下山直树横田满植村忠广
Owner TORAY IND INC
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