Biodegradable disposable syringe
AssigneeBoo Yoon Tech, Inc.
InventorYeo Saeng Yoon
Life of this patent
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Abstract
The present invention relates to a biodegradable disposable syringe and more particularly, to the biodegradable disposable syringe by using a novel polyester resin composition under a specific injection molding condition, thus being able to be disposed of without causing environmental contamination.
Claims12
A biodegradable disposable syringe manufactured by means of injection molding using biodegradable polyester resin composition having number average molecular weight of 9,000-90,000, weight average molecular weight of 30,000-600,000, melting point of 40-1.50° C., and melt index (190° C., 2160 g) of 0.1-50 g/10 min.
A disposable syringe by the polycondensation of dicarboxylic acid and a glycol, the syringe comprising:
- a biodegradable polyester resin composition prepared by polycondensation after esterification of (i) an aromatic dicarboxylic acid or an anhydride thereof selected from the group consisting of dimethyl terephthalate and terephthalic acid, and (ii) succinic acid or a mixture of succinic acid and adipic acid with (iii) succinic acid or a mixture of succinic acid and adipic acid with an aliphatic glycol selected from the group consisting of 1,4-butanediol and ethylene glycol, wherein said polyester resin has a number average molecular weight of 9,000-90,000, a weight average molecular weight of 30,000-600,000, a melting point of 100-150° C., and a melt index (190° C., 2160 g) of 0.1-50 g/10 min, and wherein said syringe is produced by injection molding at above 150-190° C.
Dependencies are inferred from the claim text.