Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1997-03-28
1998-07-14
Reddick, Judy M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 65, 521 70, 521 841, 524 13, 524 14, 524 28, 524 35, 524 45, 527103, C08J 928
Patent
active
057805199
ABSTRACT:
Lignocellulosic light weight molding products which are useful as heat insulator, shock absorber, sound absorber and so on and have open-celled foam-structure are mainly composed of lignocellulose that is able to use in not only fibrous shape but also other various shapes. They are at least composed of four components shown hereunder; (1) lignocellulose, (2) water soluble high polymer containing not less than two OH groups in a molecule and having the film properties of tensile strength 10 to 300 MPa and surface tension 30 to 65 mN/m in 0.4 wt % aqueous solution at 20.degree. C., (3) water soluble high polymer containing not less than two carboxyl groups in a molecule and/or anionic surfactant, and (4) high polymer having the film properties of tensile strength 0.1 to 10 MPa and ultimate elongation 200 to 2000%, 2nd transition point 30.degree. to 40.degree. C. and cohesion energy density 30 to 200 cal/cc.
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