Light-degradable material for producing disposable medical...

Details Light-degradable material for producing disposable medical... Light-degradable material for producing disposable medical...

2006-05-16

2006-05-16

Berman, Susan (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C029S254000

Reexamination Certificate

active

07045557

ABSTRACT:
The present invention relates to a light-degradable material for producing disposable medical appliances having main components of polypropylene resin and composite allochromatic agent, wherein the composite allochromatic agent is composed of photoinitiator and sensitizer. The photoinitiator contains ferric citrate (FeC6H5O7) and ferrous pentadione (FeC5H8O2), and the sensitizer contains hexachloroacetone (Cl6C3O) and acetylbenzene (C8H8O). The material of present invention is neither toxic nor polluted in producing or in using, and can rapidly change color while being irradiated by UV rays. Reuse of these medical appliances can be thereby avoided. When they are thrown away in nature, they will keep degrading and decay to powder within 45˜75 days. They are desired substitutes of present material for producing disposable medical appliances.

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patent: 4495311 (1985-01-01), Hudgin et al.
patent: 5135966 (1992-08-01), Chatterjee et al.
patent: 1088227 (1994-06-01), None
patent: 1241588 (2000-01-01), None

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