Invention Grant
- Patent Title: Allophanate group-containing polyisocyanate composition, polyurethane resin-forming composition, seal material, membrane module
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Application No.: US17262150Application Date: 2019-07-24
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Publication No.: US12104007B2Publication Date: 2024-10-01
- Inventor: Mitsushige Ikemoto , Futoshi Oota
- Applicant: TOSOH CORPORATION
- Applicant Address: JP Yamaguchi
- Assignee: TOSOH CORPORATION
- Current Assignee: TOSOH CORPORATION
- Current Assignee Address: JP Yamaguchi
- Agency: Squire Patton Boggs (US) LLP
- Priority: JP 18139332 2018.07.25
- International Application: PCT/JP2019/029110 2019.07.24
- International Announcement: WO2020/022408A 2020.01.30
- Date entered country: 2021-01-21
- Main IPC: C08G18/76
- IPC: C08G18/76 ; B01D63/04 ; B01D69/08 ; C08G18/28 ; C08G18/61 ; C09K3/10
Abstract:
An allophanate group-containing polyisocyanate composition that contributes to the formation of a polyurethane resin with fewer bubbles is provided.
Disclosed is an allophanate group-containing polyisocyanate composition (C) including a reaction product of diphenylmethane diisocyanate (A) and a hydroxyl group-containing compound (B), wherein the hydroxyl group-containing compound (B) includes a hydroxyl group-containing polymethylsiloxane compound (B-1) in an amount of 1 ppm or more and 300 ppm or less.
Disclosed is an allophanate group-containing polyisocyanate composition (C) including a reaction product of diphenylmethane diisocyanate (A) and a hydroxyl group-containing compound (B), wherein the hydroxyl group-containing compound (B) includes a hydroxyl group-containing polymethylsiloxane compound (B-1) in an amount of 1 ppm or more and 300 ppm or less.
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