Biodegradable resin composition

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

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Details

C524S100000, C524S140000, C524S148000, C524S161000, C524S201000, C524S211000, C524S398000

Reexamination Certificate

active

07812066

ABSTRACT:
The invention relates to a biodegradable resin composition containing a biodegradable resin, a plasticizer and a crystal nucleus agent, the plasticizer being a compound containing two or more ester groups in the molecule thereof, wherein at least one alcohol component constituting the ester contains an alkylene oxide having 2 to 3 carbon atoms, added in the average amount of 0.5 to 5 moles per one hydroxyl group, and the crystal nucleus agent is a mixture of the following crystal nucleus agent (1) and crystal nucleus agent (2); the crystal nucleus agent (1) being the following crystal nucleus agent (1-1) or crystal nucleus agent (1-2): crystal nucleus agent (1-1): at least one selected from compounds having a hydroxyl group and an amide group in the molecule thereof; and crystal nucleus agent (1-2): at least one selected from hydroxy fatty acid esters; crystal nucleus agent (2): at least one selected from a metal salt of phenylphosphonic acid, a metal salt of a phosphate, a metal salt of an aromatic dialkyl sulfonate, a metal salt of rosinic acids, an aromatic carboxylic acid amide, rosinic acid amide, carbohydrazides, N-substituted ureas, salts of melamine compounds and uracils.

REFERENCES:
patent: 7445835 (2008-11-01), Serizawa et al.
patent: 2004/0152810 (2004-08-01), Takenaka et al.
patent: 2005/0001349 (2005-01-01), Yosimura et al.
patent: 2005/0228077 (2005-10-01), Alger et al.
patent: 2002-146170 (2002-05-01), None
patent: 3410075 (2003-05-01), None
patent: 2004-176044 (2004-06-01), None
patent: 2005-120237 (2005-05-01), None
patent: 2006-176747 (2006-07-01), None
patent: 2007-130894 (2007-05-01), None
patent: WO-03/042302 (2003-05-01), None
patent: WO-2005/097894 (2005-10-01), None

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