초록 ▼

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

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.

대표청구항 ▼

[ We claim:] [2.] Light weight lignocellulosic molding product having apparent density 0.6% g/cm.sup.3 or less four components, which are(1) lignocellulose,(2) 0.5 to 1.0 wt parts of water soluble polymer containing not less than two OH groups in a molecule and having the film properties of tensile

[ We claim:] [2.] Light weight lignocellulosic molding product having apparent density 0.6% g/cm.sup.3 or less four components, which are(1) lignocellulose,(2) 0.5 to 1.0 wt parts of water soluble 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) 1 to 20 wt parts of water soluble polymer containing not less than two carboxyl groups and/or anionic surfactant(4) 5 to 150 wt parts of polymer having the film properties of tensile strength 0.1 to 10 MPa and ultimate elongation 200 to 2000%, second transition point -40.degree. to 30.degree. C. and cohesion energy density 30 to 200 cal/cc.