Invention Grant
- Patent Title: Polyurethane composite, its preparation and use
- Patent Title (中): 聚氨酯复合材料,其制备及应用
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Application No.: US11663815Application Date: 2005-09-26
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Publication No.: US08017229B2Publication Date: 2011-09-13
- Inventor: Chenxi Zhang , Jen-Chieh Lin , Chi-Kwong Chow , Xiang Wang
- Applicant: Chenxi Zhang , Jen-Chieh Lin , Chi-Kwong Chow , Xiang Wang
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: CN200410066715 20040928
- International Application: PCT/CN2005/001571 WO 20050926
- International Announcement: WO2006/034640 WO 20060406
- Main IPC: B32B27/40
- IPC: B32B27/40 ; C08J9/08

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/m3 to 1200 kg/m3, 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/m3 to 200 kg/m3, 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.
Public/Granted literature
- US20080261022A1 Polyurethane Composite, Its Preparation and Use Public/Granted day:2008-10-23
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