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Cellulose triacetate thin film containing cellulose acetate butyrate coat

A technology of cellulose triacetate and acetic acid butyric acid, applied in the coating and other directions, can solve the problems of affecting the quality of the lens, high cost, separation, etc., and achieve the effects of stable geometric dimensions, small shrinkage, and good compounding.

Active Publication Date: 2011-04-06
乐凯光电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent document with the application number 200410064764.3 and titled "Mirror Composite Film" discloses a film. The composite property of this film and CR-39 resin cannot meet the needs of users. Separation, falling off, affecting the quality of the lens
In addition, the polarizing material made of cellulose acetate butyrate (CAB) alone is compounded with CR-39, which not only has high cost but also has other technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] CAB 0.1 part;

[0025] Butanone 20 parts;

[0026] 60 parts of acetone;

[0027] 40 parts of ethyl acetate;

[0028] 0.1 part of diethyl phthalate;

[0029] Add 0.5 parts of CAB to 20 parts of methyl ethyl ketone, 60 parts of acetone and 40 parts of ethyl acetate, then add 0.1 parts of diethyl phthalate, stir and dissolve to form a coating solution, adopt the method of dip coating, and apply it coated on a cellulose triacetate film, then dried at 85° C., and taken up to obtain the cellulose triacetate film containing a CAB coating provided by the present invention. Its performance can be seen in Table 1.

Embodiment 2

[0031] 5 copies of CAB;

[0032] 60 parts of acetone;

[0033] 20 parts of methanol;

[0034] 10 parts of isopropanol;

[0035] 0.2 parts of dibutyl phthalate;

[0036] Add 5 parts of CAB to 60 parts of methyl ethyl ketone, 20 parts of methanol and 10 parts of isopropanol, add 0.2 parts of dibutyl phthalate, stir and dissolve to form a coating solution, and adopt the method of roller coating. It is coated on a cellulose triacetate film, then dried at 80° C., and taken up to obtain the cellulose triacetate film containing a CAB coating provided by the present invention. Its performance can be seen in Table 1.

Embodiment 3

[0038] 1 CAB;

[0039] 60 parts of dichloromethane;

[0040] 20 parts of ethanol;

[0041] 0.5 parts of dimethoxyethyl phthalate;

[0042] Add 1 part of CAB to 60 parts of dichloromethane and 20 parts of ethanol, add 0.5 parts of dimethoxyethyl phthalate, stir and dissolve to form a coating solution, adopt extrusion coating method, and apply it coated on a cellulose triacetate film, then dried at 60° C., and taken up to obtain the cellulose triacetate film containing a CAB coating provided by the present invention. Its performance can be seen in Table 1.

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PUM

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Abstract

A cellulose triacetate ester film which contains a cellulose acetate butyrate coating is disclosed, wherein each component according to parts by weight in the cellulose acetate butyrate coating comprises 0.1-10 parts of cellulose acetate butyrate, 20-80 parts of solvent, 5-10 parts of auxiliary solvent and 0.1-1 part of plasticizer. The prepared film according to the invention is even and transparent in the film appearance, little in contraction percentage, stable in geometrical size, which is provided with excellent composite performance with CR-39 resin and suitable for industrialized production.

Description

technical field [0001] The invention relates to a cellulose triacetate film, in particular to a cellulose triacetate film containing cellulose acetate butyrate coating. Background technique [0002] Due to the excellent physical and mechanical properties and excellent optical properties of cellulose triacetate (TAC) film, it is widely used in the field of glasses manufacturing. However, the simple TAC film has the disadvantage of poor surface hardness, which makes it widely used in the use restricted. In order to make it available for the manufacture of spectacle lenses, it is generally necessary to compound CR-39 resin or other wear-resistant polymer materials to make lenses. The Chinese patent document with the application number 200410064764.3 and titled "Mirror Composite Film" discloses a film. The composite property of this film and CR-39 resin cannot meet the needs of users. The separation and shedding of the lens will affect the quality of the lens. In addition, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C08J5/18C08L1/12C08J7/046
CPCC08J2401/14C08J5/18C08J2301/12C08J7/047C08J7/0427C08J7/046
Inventor 张永利张文广
Owner 乐凯光电材料有限公司
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