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Contact lens material, contact lenses, and manufacturing method for contact lenses

A technology of contact lenses and manufacturing methods, applied in glasses/goggles, instruments, optics, etc., can solve the problems of glasses inflammation, bacterial growth, etc.

Active Publication Date: 2012-07-11
BENQ MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the surface of the silicone hydrogel material has hydrophobic properties, which can easily lead to bacterial growth and inflammation of the glasses.

Method used

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  • Contact lens material, contact lenses, and manufacturing method for contact lenses
  • Contact lens material, contact lenses, and manufacturing method for contact lenses
  • Contact lens material, contact lenses, and manufacturing method for contact lenses

Examples

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Embodiment Construction

[0048] In one embodiment of the present invention, the present invention provides a contact lens material, and the contact lens material has a hydrophilic surface and can form a contact lens with high oxygen permeability and high water content.

[0049] The contact lens material provided by the present invention may comprise a siloxane polymer represented by formula (I), at least one hydrophilic monomer, a crosslinking agent or a siloxane polymer represented by formula (II) and Initiator, but not limited thereto, wherein the molecular weight of the siloxane polymer represented by formula (I) is about 1000 to 10000, and formula (I) and formula (II) are respectively as follows:

[0050]

[0051] In formula (I), R 1 , R 2 with R 3 for C 1 -C 4 Alkyl, R 4 for C 1 -C 6 Alkyl, R 5 Residues obtained by removal of NCO groups from aliphatic or aromatic diisocyanates, R 6 with R 7 is an alkylene group, and n is an integer of about 4-80, m is an integer of about 3-40, and in...

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Abstract

The invention discloses a contact lens material, contact lenses, and a manufacturing method for contact lenses. The contact lens material comprises a siloxane polymer expressed by formula (I), wherein in the formula (I), R1, R2 and R3 are C1-C4 alkyl group, R4 is C1-C6 alkyl group, R5 is the residue obtained by removing NCO group from aliphatic or aromatic diisocyanate, R6 and R7 are alkylene group, n is an integer ranging from 4 to 80, and m is an integer ranging from 3 to 40; and the molecular weight of the siloxane polymer expressed by formula (I) is about 1000 to 10000. The contact lens material further comprises at least one hydrophilic monomer; a cross-linking agent or a siloxane polymer expressed by formula (II), wherein in the formula (II), p is an integer ranging from 4 to 80, and q is an integer ranging from 3 to 40; and an initiator.

Description

technical field [0001] The present invention relates to a contact lens material, and in particular to a contact lens material comprising a hydrophilic siloxane polymer, and the contact lens formed from the contact lens material has high oxygen permeability and high water content characteristics. Background technique [0002] Hydrogel contact lenses refer to contact lenses made of Hydrogel material, such as poly 2-hydroxyethyl methacrylate (p-HEMA). A cross-linking agent, such as ethylene glycol dimethacrylate (EGDMA) and other compounds, can be added to poly-2-hydroxyethyl methacrylate to make its polymer chains staggered to increase strength. In addition, since the moisture content of 2-hydroxyethyl methacrylate is only 38.8%, in order to increase the moisture content, in addition to p-HEMA, more than one hydrophilic monomer will be added to the contact lens material In order to increase the water content, such as N-vinylpyrrolidone (NVP), N, N-dimethylacrylamide (DMA), m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06G02C7/04G02B1/04
Inventor 詹凡丹
Owner BENQ MATERIALS
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