B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/106, 18/49
B29D 11/00 (2006.01) G02B 1/04 (2006.01)
Patent
CA 1055210
ABSTRACT OF THE DISCLOSURE: Method of manufacturing shaped articles from multi- block copolymers of acrylonitrile with acrylamide and/or acrylic acid and diacryl imide, which copolymers have a structure displaying typical, circular reflexes as a 5.1 ? periodicity in x-ray analysis and presenting two distinct but inseparable phasein the swelled state. This method comprises molding the copolymers in the state of hydrogels by pressure in the presence of a water containing swelling agent at temperature higher than the glass transition point of any polymeric phase present in the system, but lower then 250°C while avoiding the boiling of said swelling agent, to shape the articles with unchanged equilibrium swelling capacity and composition of copolymers. This method is in particular suitable for shaping various articles of surgery such as contact lens, tips of hydrogel catheters, pessars, plasthese of organ,...
234299
Jungr Vaclav
Stoy Artur
Stoy Vladimir
Zima Jiri
Ceskoslovenska Akademie Ved
Na
LandOfFree
Method for manufacturing shaped articles from multi-block... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing shaped articles from multi-block..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing shaped articles from multi-block... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-630199