Invention Grant
- Patent Title: Aqueous dispersion of polyurethane resin, flame-retardant polyester fiber using the same, and method for producing said fiber
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Application No.: US14429855Application Date: 2013-09-19
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Publication No.: US09834884B2Publication Date: 2017-12-05
- Inventor: Nobuyuki Shimamura , Takashi Usui
- Applicant: ADEKA CORPORATION
- Applicant Address: JP Tokyo
- Assignee: ADEKA CORPORATION
- Current Assignee: ADEKA CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Millen, White, Zelano, Branigan, P.C.
- Priority: JP2012-208386 20120921
- International Application: PCT/JP2013/005527 WO 20130919
- International Announcement: WO2014/045577 WO 20140327
- Main IPC: D06M15/572
- IPC: D06M15/572 ; C08K5/523 ; D06M13/292 ; D06M15/564 ; C08G18/66 ; C08G18/75 ; C08G18/08 ; C08G18/12 ; C08G18/40 ; C08G18/44 ; C08G18/00 ; C08G18/48 ; C08G18/10 ; C08G18/42 ; D06M101/32

Abstract:
An aqueous dispersion of polyurethane resin is obtained by a chain elongation reaction in water wherein (C) at least one chain extender selected from a group consisting of water-soluble polyamines, hydrazine and derivatives thereof is added to a dispersion liquid obtained by emulsifying and dispersing a mixture in water. The mixture comprises: (B) at least one compound selected from the phosphorous compounds represented by the following formula (1) and (A) an urethane prepolymer and/or a neutralized urethane prepolymer material which has an isocyanate group at the terminal. The urethane prepolymer of component (A) is an urethane prepolymer obtained from (a1) an organic polyisocyanate and (a2) a polymeric polyol. The neutralized urethane prepolymer material of component (A) is a neutralized material obtained by neutralizing an urethane prepolymer which is obtained by further using (a3) a compound having an anionic hydrophilic group and at least two active hydrogens in a molecule together with the components (a1) and (a2).
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