Title:
ポリマーヒドロゲルの精製および乾燥方法
Document Type and Number:
Japanese Patent JP4177256
Kind Code:
B2
Abstract:
This invention relates to a method for purifying and drying a polymer hydrogel. This invention is based in part upon the discovery that rapid drying of polymer hydrogels can eliminate the problem of unacceptable levels of soluble oligomers caused by prolonged thermal treatment. Rapid drying techniques allow drying hydrogels containing more water than was previously considered possible without a loss in product quality. Furthermore, it was discovered that slurries comprising polymer hydrogels and large quantities of water can be spray dried and that spray drying can be conducted with only minimal oligomer formation.
Inventors:
McDonnell, Peter, Day.
Rare, Gully, S.
Thomas, Peter, W.
Larose, Mark, F.
Boardmar, Junior, Richard, Buoy.
Rare, Gully, S.
Thomas, Peter, W.
Larose, Mark, F.
Boardmar, Junior, Richard, Buoy.
Application Number:
JP2003534481A
Publication Date:
November 05, 2008
Filing Date:
October 01, 2002
Export Citation:
Assignee:
Genzyme Corporation
International Classes:
C08J3/03; C08J3/16; C08F6/00; C08J3/075; C08J3/12; C08L39/02
Domestic Patent References:
| JP6172428A | ||||
| JP8024325A | ||||
| JP2003508602A | ||||
| JP2003508601A | ||||
| JP2001089574A | ||||
| JP6065312A |
Attorney, Agent or Firm:
Yoshinori Hosoda