Highly radiopaque polyolefins and method for making the same

Details Highly radiopaque polyolefins and method for making the same Highly radiopaque polyolefins and method for making the same

1998-07-22

2000-06-20

Merriam, Andrew E. C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524398, 524440, 524586, 604523, C08J 704, A61L 2918, A61L 2908

Patent

active

060778806

ABSTRACT:
In accordance with the present invention there is provided a method for making a highly radiopaque polyolefin compound, wherein the radiopaque material in said compound is substantially uniformly dispersed and held within a polymer matrix. During the method one first heats an amount of polyolefin, preferably low density polyethylene, to at least its melting temperature. The amount of polyolefin is equal to at least 10% by weight of the compound. Then an amount of radiopaque metal powder is added to the polyolefin. The amount of radiopaque metal is equal to up to 90% by weight of the compound. The metal powder is preferably tantalum, tungsten, gold or platinum. Thereafter, an amount of a dispersing agent is added to the polyolefin to form a mixture. The amount of dispersing agent is equal to at least 0.2% by weight of the compound. The dispersing agent is preferably zinc stearate, aluminum stearate or calcium stearate. Lastly, the mixture is mixed and cooled below its melting temperature to form the compound.

REFERENCES:
patent: 2462331 (1949-02-01), Myers
patent: 3867315 (1975-02-01), Tigner
patent: 4000739 (1977-01-01), Stevens
patent: 5045072 (1991-09-01), Castillo
patent: 5300048 (1994-04-01), Drewes
patent: 5453095 (1995-09-01), Davila

Affiliated with

Also associated with

Rating

Highly radiopaque polyolefins and method for making the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Highly radiopaque polyolefins and method for making the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly radiopaque polyolefins and method for making the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1854056