Invention Application
- Patent Title: ELASTOMERS FOR PAPER MILL EQUIPMENT
- Patent Title (中): 纸机设备用弹性体
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Application No.: US14374056Application Date: 2013-02-27
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Publication No.: US20140352904A1Publication Date: 2014-12-04
- Inventor: Harpreet Singh , William H. Heath , Amarnath Singh , Asfar N. Chowdhury , Marcin Grigoriew , Kaoru Aou
- 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
- International Application: PCT/US2013/025156 WO 20130227
- Main IPC: C08G18/44
- IPC: C08G18/44 ; C08G18/48 ; D21F1/00 ; C08G18/76

Abstract:
Embodiments of the invention provide for paper mill equipment that can better withstand the conditions of a paper Mill. Embodiments encompass paper mill equipment that incorporate a polyurethane layer having a hysteresis value of less than 70% and a permanent set of less than 30%. The polyurethane layer includes a polyurethane produced by curing a mixed composition. The mixed composition includes at least a urethane prepolymer (A) and at least a curing agent (B) having an active hydrogen group (H). The urethane prepolymer (A) has at least one terminal isocyanate group and is obtained by reacting at least a polyisocyanate compound (a) with at least a polycarbonate diol compound (b) having a number average molecular weight of at least 1500 g/mol. The curing agent (B) includes at least an amine compound. The elastomer compositions are also useful to coat the acid pickling roller in the steel industry.
Public/Granted literature
- US09096707B2 Elastomers for paper mill equipment Public/Granted day:2015-08-04
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