The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2015
Filed:
Feb. 07, 2013
Harpreet Singh, Pearland, TX (US);
William H. Heath, Lake Jackson, TX (US);
Amarnath Singh, Pearland, TX (US);
Asfar N. Chowdhury, Manchester, GB;
Marcin Grigoriew, Macclesfield, GB;
Kaoru Aou, Lake Jackson, TX (US);
Harpreet Singh, Pearland, TX (US);
William H. Heath, Lake Jackson, TX (US);
Amarnath Singh, Pearland, TX (US);
Asfar N. Chowdhury, Manchester, GB;
Marcin Grigoriew, Macclesfield, GB;
Kaoru Aou, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
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.