Process for preparing phenolic resin hollow fibre film for auxiliary respirator |
Title： |
| Process for preparing phenolic resin hollow fibre film for auxiliary respirator |
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Application Number： |
02100265 |
Application Date： |
2002/01/11 |
Announcement Date： |
2002/11/06 |
Pub. Date： |
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Publication Number： |
1377726 |
Announcement Number： |
1172741 |
Grant Date： |
2004-10-27 |
Granted Pub. Date： |
2004-10-27 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
A61M 1/18, A61M 16/00, B01D 69/08, B01D 71/38 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Cui Fuzhai, Wang Xiaohong, Feng Qingling |
Key Words： |
preparing process, phenolic resin, hollow fibre film, auxiliary respirator |
Abstract： |
The present invention belongs to the field of bioengineering material technology. PVB material and phenolic resin in the weight ratio of 1 to 1-10 are mixed and dissolved in methanol to prepare 8-28 % concentration solution; the solution is produced into spinning dope through reduced pressure distillation, filtering and debubbling; and the spinning dope is further produced into hollow phenolic resin fiber film through stretching, carbonation, strengthening, toughening, anticoagulation and other specific steps. The material is non-toxic, has no toxic side effect, and may be used clinically; and it may be used in auxiliary respirator for extraneous and intracorporal use. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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