Title:
難黄変軟質ポリウレタンフォーム及びパット
Document Type and Number:
Japanese Patent JP5186735
Kind Code:
B2
Abstract:
Disclosed is a hardly yellowing soft polyurethane foam which is obtained without using an expensive aliphatic isocyanate as an isocyanate, while using a conventional general-purpose polyol as the polyol component. This hardly yellowing soft polyurethane foam is suppressed in yellowing and color migration. Specifically disclosed is a hardly yellowing soft polyurethane foam obtained by foaming a polyurethane raw material containing a polyol component and an isocyanate. This polyurethane foam is characterized in that the polyurethane raw material contains urea. By using, as the polyol component, a polyether polyol having an ester bond in the polyol backbone while having a plurality of benzene rings in the polyol structure, there can be achieved further improved discoloration preventing effects.
Inventors:
Yorino Senba
Kinoshita Hideya
Kinoshita Hideya
Application Number:
JP2006176773A
Publication Date:
April 24, 2013
Filing Date:
June 27, 2006
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
C08G18/00; A41C3/14; A41D27/26; C08G18/48; C08K5/21; C08L75/08; C08G101/00
Domestic Patent References:
| JP2261818A | ||||
| JP55147517A | ||||
| JP55112228A | ||||
| JP62054719A | ||||
| JP52030898A | ||||
| JP3106922A |
Foreign References:
| WO2002053618A1 |
Attorney, Agent or Firm:
Tsuyoshi Shigeno