Process for hydroxylating hydrophobic polymer surfaces

Details Process for hydroxylating hydrophobic polymer surfaces Process for hydroxylating hydrophobic polymer surfaces

1989-01-13

1990-10-23

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 14, 264 26, 264 25, 264 78, 264 83, C08J 712, B29D 1100, B29C 7104

Patent

active

049650262

ABSTRACT:
A process for treating hydrophobic polymer surfaces to form hydroxyl moieties thereon comprises ozonating the surface of said hydrophobic polymer to form hydroperoxy groups thereon, and then irradiating said ozonated surface with ultraviolet light or exposing to heat to convert the hydroperoxy groups to hydroxyl moieties in the presence of a hydrogen donor. Such hydroxylated surfaces possess hydrophilic properties and can undergo the chemical reactions characteristic for hydroxyl groups. Polymers so modified are useful in biomedical devices, semipermeable membranes, films, fibers and especially contact lenses.

REFERENCES:
patent: 3008920 (1961-11-01), Urchick
patent: 3070573 (1962-12-01), Beck
patent: 3677877 (1972-07-01), Meteria et al.
patent: 3925178 (1975-12-01), Gesser
patent: 4311573 (1982-01-01), Mayhan et al.
patent: 4589964 (1986-05-01), Mayhan et al.
patent: 4761436 (1988-08-01), Kohns

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