Method for the preparation of precast elements for the...

Details Method for the preparation of precast elements for the... Method for the preparation of precast elements for the...

B - Operations, Transporting

29

D

18/106

B29D 11/00 (2006.01) C08F 6/00 (2006.01) C08J 7/02 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1267512

ABSTRACT OF THE DISCLOSURE: A method for the preparation of precast elements for use in the production of contact lenses by mechanical working, comprising the steps of polymerizing a monomer mixture in the presence of radical initiators to prepare a precast element, then subjecting the precast element in a swollen state to extraction with a swelling agent, and then perfectly dried it.

517426

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