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:
Sep. 13, 2011
Filed:
Sep. 26, 2005
Chenxi Zhang, Shanghai, CN;
Jen-chieh Lin, Shanghai, CN;
Chi-kwong Chow, Taiwan, CN;
Xiang Wang, Shanghai, CN;
Chenxi Zhang, Shanghai, CN;
Jen-Chieh Lin, Shanghai, CN;
Chi-Kwong Chow, Taiwan, CN;
Xiang Wang, Shanghai, CN;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
A polyurethane composite is disclosed comprising rigid polyurethane and foamed thereupon a flexible integral skin (surface pore closed) polyurethane foam, wherein the rigid polyurethane having a density range of 600 kg/mto 1200 kg/m, a Shore A hardness range of 90 to 99, a Shore D hardness range of 40 to 80, a tensile strength range of 10MPa to 60 MPa, a flexural strength range of 20 MPa to 60 Mpa, a elastic flexural modulus range of 800 MPa to 2500 Mpa, an elongation rate at break of 10-100% and an elongation at break of 25-150%; wherein the flexible integral skin (surface pore closed) polyurethane foam having a density range of 60 kg/mto 200 kg/m, a tensile strength of 60 kPa to 250 kPa, an elongation at break of 70-180%, a tearing strength of 130-220 N/m, a resilience of falling ball of 40-70%, IFD25% of 200-600 N and IFD65% of 600-1800 N.