Home  Products Search  Properties Search  中文版
Home > Dictionary > Information
polymer contact lens
Molecular formula :
CAS :

nature : commonly known as contact lenses. A directly attached to the lens surface of the cornea, the majority from artificial polymer materials, divided into rigid, semi-rigid and soft three, rigid contact lens is not the type of oxygen and polymethyl methacrylate microscope and the oxygen-siloxane - acrylate copolymer mirror, and are less comfortable; semi-rigid gas permeable lens can be from the hydrophobic made of silicone rubber, the most common soft lens from PMMA hydroxyethyl methacrylate (HEMA), or a modified material. The mesh crosslinked PMMA HEMA has good absorbent, can form Hydrosol can best meet the physical needs and comfort requirements. In HEMA introduced N-vinyl pyrrolidone can increase its water content, the introduction of methyl methacrylate can increase its mechanical strength. Polymer contact lens vision correction can also be used for eye treatment, administration purposes.


Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".
Structure:
Please see below "More Detailed Data"
More Detailed Data:
1) lens
2) macromolecule;polymer
3) polymer
4) polymer;macromolecular compound
5) polymer
Notice Some description was translated by software and the data is only as a reference.
Patent:
1) Flexible polyurethane foam
2) Process for preparation of polymeric mixtures based on EP (D) M elastomer copolymers
3) Process for preparing vinyl polymer
4) Mixture of organosilanepolyphanes and process for production of rubber compounds containing these mixtures
5) 4 -thia -1 -azabicyclo [3. 2. 0] heptane -3 -imino -2 -isopropylidene -7 -oxo analogons of beta -lactams, processes for their preparation and use thereof
6) Process for preparing diketopyrrolopyrrole derivatives
7) New 3-(piperid-4-yl)-1, 2 -benzisoxazole and 3-(piperazin-4-yl) -1, 2-benzisoxazole compounds, processes for their preparation and pharmaceutical compositions containing them
8) Xantone compounds, their production and use
9) Process of preparation of epoxides from olefins
10) Process for preparing morpholine hydrochloride as precursor of monoxydine hydrochloride