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:
May. 16, 2000
Filed:
Aug. 19, 1998
Masahiro Isobe, Kanagawa-ken, JP;
Kazuhiko Ohkubo, Kanagawa-ken, JP;
Seijiro Sakai, Kanagawa-ken, JP;
Usaji Takaki, Kanagawa-ken, JP;
Tadahito Nobori, Kanagawa-ken, JP;
Tsukuru Izukawa, Aichi-ken, JP;
Satoshi Yamasaki, Aichi-ken, JP;
Mitsui Chemicals, Inc., , JP;
Abstract
A flexible polyurethane foam prepared by reacting polyisocyanate with polyol and/or polymer polyol containing dispersed polymer microparticles obtained by polymerizing an unsaturated compound, water, catalyst, surfactant and, when needed, crosslinking agent and other auxiliary agents, wherein a portion or the whole of the polyol and/or the polymer polyol is prepared in the presence of a compound having a nitrogen-phosphorus double bond as a catalyst, have excellent wet compression set, fatigue by constant-load pounding and dynamic durability.