Recycled resin compositions and disposable medical devices made therefrom

Patent metadata

Field	Value
Publication number	US-9718949-B2
Application number	US-201514685930-A
Country	US
Kind code	B2
Filing date	Apr 14, 2015
Priority date	Aug 20, 2010
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

Compositions including recycled resin components and medical devices and components made form such compositions are disclosed. The compositions and medical devices are characterized as biocompatible and sterilization stable. In one or more embodiments, the compositions include a recycled resin component and may include one or more of an anti-oxidant component, slip additive component, anti-static component, impact modifier component, colorant component, acid scavenger component, X-ray fluorescence agent component, radio opaque filler component, surface modifier component, melt stabilizer component, clarifier component, processing aid component and reinforcing agent component. Methods of forming medical articles and components are also disclosed.

First claim

What is claimed is:

1. A method for molding a medical device comprising:
providing a biocompatible recycled polypropylene resin composition sourced from a traceable source, wherein the recycled polypropylene resin composition comprises post-industrial recycled resin, post-consumer recycled resin and combinations thereof, the recycled polypropylene resin composition having a cytotoxicity score of zero;
mechanically mixing 50-70% by weight of the recycled polypropylene resin composition with 30 to 50% virgin polypropylene resin, the virgin polypropylene resin including 0.3% to 0.8% by weight of an anti-oxidant component and a melt-stabilizer component and 0.2% to 0.3% by weight of an acid scavenger component;
providing one or more of an slip additive component, anti-static component, impact modifier component, colorant component, x-ray fluorescence agent component, radio opaque filler component, surface modifier component, processing aid component, clarifier component, nucleating agents and reinforcing agent component;
forming a biocompatible, fluid path contact medical device using an injection molding process; and
conditioning the medical device at 23° C. and 50% relative humidity for 40 hours.

2. The method of claim 1 , wherein the composition of recycled polypropylene resin composition mechanically mixed with virgin polypropylene resin comprises a flexural modulus in the range from about 70 kpsi to about 350 kpsi measured according to ASTM D790-03.

3. The method of claim 1 , wherein the composition of recycled polypropylene resin composition mechanically mixed with virgin polypropylene resin comprises a heat deflection temperature from about 60° C. to 260° C.

4. The method of claim 1 , wherein the composition of recycled polypropylene resin composition mechanically mixed with virgin polypropylene resin comprises a notched izod impact strength in the range from about 0.1 ft-lb/in to about 4.0 ft-lb/in.

5. The method of claim 1 , wherein the composition of recycled polypropylene resin composition mechanically mixed with virgin polypropylene resin comprises 60% by weight of recycled polypropylene resin composition and 40% by weight of the virgin polypropylene resin.

6. The method of claim 1 , wherein the composition of recycled polypropylene resin composition mechanically mixed with virgin polypropylene resin comprises 70% by weight of recycled polypropylene resin composition and 30% by weight of the virgin polypropylene resin.

7. The method of claim 1 , wherein the composition of recycled polypropylene resin composition mechanically mixed with virgin polypropylene resin comprises 50% by weight of recycled polypropylene resin composition and 50% by weight of the virgin polypropylene resin.

Assignees

• Becton Dickinson Co

Inventors

• Kulshrestha Ankur S
• Calistri-Yeh Mildred
• Amora Lourdes Pia Lopez
• Giddes Richard

Classifications

• A61L29/04

  Macromolecular materials · CPC title

• A61L31/04

  Macromolecular materials · CPC title

• A61L31/14

  Materials characterised by their function or physical properties {, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials} · CPC title

• C08L23/12 Primary

  Polypropene · CPC title

• B29K2023/12

  PP, i.e. polypropylene · CPC title