Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1994-07-25
1997-03-25
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521172, 524 35, 524 72, 530500, C08J 900, C08G 1800
Patent
active
056145640
ABSTRACT:
The present invention relates to a lignocellulose solution and its production method, further to a degradable foam and its production method. The degradable foam of the present invention is produced by foaming and hardening with an ordinary foaming agent and hardening agent the lignocellulose solution which is obtained by dissolving lignocellulose and/or its derivatives in aliphatic polyester polyol, or else such solution with photodegradation promoters added thereto; and is also produced by foaming and hardening with an ordinary foaming agent and an ordinary hardening agent the lignocellulose solution which is obtained by dissolving lignocellulose and/or its derivatives in the bio-/photo-degradable aliphatic polyester polyol which is obtained by a polycondensation of the dicarboxylic acid composed of aliphatic dicarboxylic acid and keto containing dicarboxylic acid or its ester and aliphatic diol.
The degradable foam of the present invention excells in its degradability, mechanical properties and economic efficiency.
REFERENCES:
patent: 5075417 (1991-12-01), Trowell et al.
patent: 5270044 (1993-12-01), Fulmer et al.
patent: 5306550 (1994-04-01), Nishiyami et al.
CA:119:10,686 (Corr. to JP-04,351,623-A2) Dec. 1992.
CA:116:154,089 (Corr. to DE 4,121,085-A1) Jan. 1992.
Hwang Jin-taek
Jeon Seung-Ho
Jung Won-Bum
Seo Sung-Ju
Cooney Jr. John M.
Samsung General Chemicals Co. Ltd.
Seidleck James J.
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