| 摘要 |
<p>METHOD OF PIGMENTING WATER-ABSORBABLE PLASTIC AND PRODUCT THEREFROM This invention is directed to a pigmented plastic material comprising a polymerized mixture of a water-absorbable plastic material such as 2-hydroxyethyl methacrylate (HEMA), an organic binder such as cellulose acetate butyrate (CAB), and at least one pigment. The pigmented plastic mixture is particularly useful in the production of colored soft contact lenses. The invention is also directed to a method for producing such pigmented plastic material.</p> |
