Sulfonic acid and aldehyde condensation polymers for preventing

Details Sulfonic acid and aldehyde condensation polymers for preventing Sulfonic acid and aldehyde condensation polymers for preventing

1997-05-01

1999-09-28

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Solid synthetic organic polymer as designated organic active...

Aftertreated polymer

424486, 514841, 514843, A61K 31975

Patent

active

059583991

ABSTRACT:
This invention pertains to the discovery that condensation polymers of an aldehyde and aromatic sulfonic acids and fractions thereof, such as formaldehyde naphthalenesulfonic acid condensation polymers, can prevent pregnancy in an individual.

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patent: 5112869 (1992-05-01), Watanabe et al.
patent: 5614559 (1997-03-01), Singh et al.
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