发明名称 |
Process for the manufacture of polyurethane resin for electrostatic spinning |
摘要 |
A process for the preparation of polyurethane resins particularly suitable for electrostatic spinning which comprises forming a prepolymer of polyether glycol and a diisocyanate reacted in a molar ratio of about 1:2, and thereafter reacting the prepolymer with additional diisocyanate and a diol extender, the final molar ratio of the polyether, isocyanate and diol reactants being approximately 1:3.7:2.5. The reaction is conducted in an organic solvent at a temperature of about 45 DEG C. to obtain a polymer having an inherent viscosity of from about 2.0 to 2.4 in a solution of 25 to 30 percent solids. The solution is diluted to about 15 percent solids prior to spinning.
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申请公布号 |
US4524036(A) |
申请公布日期 |
1985.06.18 |
申请号 |
US19840597968 |
申请日期 |
1984.04.09 |
申请人 |
UNIVERSITY OF LIVERPOOL;VASCOR INC. |
发明人 |
GILDING, DENIS K.;CLARKE, ROY M. |
分类号 |
D01F6/70;C08G18/00;C08G18/08;C08G18/10;D04H1/56;(IPC1-7):B29C6/00;B29C23/00 |
主分类号 |
D01F6/70 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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