Invention Grant
- Patent Title: Elastomers for paper mill equipment
- Patent Title (中): 造纸厂设备用弹性体
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Application No.: US14374056Application Date: 2013-02-07
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Publication No.: US09096707B2Publication Date: 2015-08-04
- Inventor: Harpreet Singh , William H. Heath , Amarnath Singh , Asfar N. Chowdhury , Marcin Grigoriew , Kaoru Aou
- Applicant: Harpreet Singh , William H. Heath , Amarnath Singh , Asfar N. Chowdhury , Marcin Grigoriew , Kaoru Aou
- 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 20130207
- International Announcement: WO2013/122812 WO 20130822
- Main IPC: C08G18/48
- IPC: C08G18/48 ; C08G18/44 ; C08G18/76 ; C08G18/10 ; C08G18/12 ; C08G18/32 ; C08G18/40 ; D21F1/00

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
- US20140352904A1 ELASTOMERS FOR PAPER MILL EQUIPMENT Public/Granted day:2014-12-04
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