Invention Grant
- Patent Title: Viscoelastic foam
- Patent Title (中): 粘弹性泡沫
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Application No.: US14344343Application Date: 2012-09-20
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Publication No.: US09441068B2Publication Date: 2016-09-13
- Inventor: Elisa Corinti , Andrea Benvenuti , Alessio Sabadini , Jean-Paul Masy , Francois M. Casati , Brian Dickie
- Applicant: DOW GLOBAL TECHNOLOGIES LLC
- Applicant Address: US MI Midland
- Assignee: Dow Global Technologies LLC
- Current Assignee: Dow Global Technologies LLC
- Current Assignee Address: US MI Midland
- Priority: ITMI2011A1750 20110929
- International Application: PCT/EP2012/068508 WO 20120920
- International Announcement: WO2013/045336 WO 20130404
- Main IPC: C08G18/76
- IPC: C08G18/76 ; C08G18/48 ; C08G18/63 ; C08G18/40 ; C08G18/08 ; C08G18/18 ; C08G18/32 ; C08J9/00 ; C08G101/00

Abstract:
Embodiments of the invention provide for viscoelastic polyurethane foams. The foams are made from reaction system which includes (a) an isocyanate reactive component, (b) a isocyanate component, (c) one or more blowing agents, (d) a catalyst component, and (e) a silicone based surfactant. The isocyanate reactive component includes at least (i) from 25 to 80% by weight of at least one polyoxyethylene capped polyoxypropylene/polyoxyethylene polyol having a combined number average equivalent weight from 1300 to 1700, a polyoxyethylene percentage of between 75% and 95% by weight of the combined amounts of polyoxypropylene and polyoxyethylene, and a primary OH percentage of between 80 and 95% of the total number of OH groups of the polyoxyethylene capped polyoxypropylene/polyoxyethylene polyol, and (ii) from 5 to 30% by weight of the isocyanate reactive component of at least one low functionality polyol having a functionality of between 1.5 and 2.5, a combined number average equivalent weight from 500 to 1500 and an OH number of 40 to 70.
Public/Granted literature
- US20150004389A1 VISCOELASTIC FOAM Public/Granted day:2015-01-01
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