Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1997-05-13
1999-11-02
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
528487, 528490, 528491, 528493, 528494, 528497, 528502A, 521 40, C08F 612, C08J 1106
Patent
active
059772948
ABSTRACT:
A process for polymer deformulation by solvent solution filtration begins by including formulated polymers and/or polymer products in a recycle stream. The formulated polymer products include a quantity of soluble polymers and/or insoluble polymers, soluble and/or insoluble colorants, formulations and additives. The recycle stream is placed in a solvent, taking the polymer and formulations into a solvent/polymer solution. Next, the solution is processed through a filtration stage. A quantity of mineral filter aid particles are then added to the solution to adsorb formulations contained in the solution. One of the mineral filter aids must be some form of carbon, preferably activated carbon. Other mineral filter aids may include diatomaceous earth. The solvent/polymer solution is then subjected to an additional polish filtration stage to remove substantially all of the mineral filter agents and associated formulations. Following filtration, a quality check is performed on the solvent/polymer solution to determine whether additional filtering of the solution is required. If additional filtering of the solution is required, the filtering process is repeated. If no additional filtering is required, the deformulated polymer is separated from the solution, and the deformulated polymer is allowed to dry.
REFERENCES:
patent: 3944513 (1976-03-01), Greenwald et al.
patent: 4184027 (1980-01-01), Hopkins
patent: 4212967 (1980-07-01), Govoni et al.
patent: 4379525 (1983-04-01), Nowicki et al.
patent: 4584421 (1986-04-01), Saito et al.
patent: 4642401 (1987-02-01), Coenen et al.
patent: 4851601 (1989-07-01), Fukuda et al.
patent: 4855080 (1989-08-01), McConaghy et al.
patent: 5136117 (1992-08-01), Paisley et al.
patent: 5198471 (1993-03-01), Nauman et al.
patent: 5232954 (1993-08-01), Peters
patent: 5266601 (1993-11-01), Kyber et al.
patent: 5269948 (1993-12-01), Krutchen
patent: 5278282 (1994-01-01), Nauman et al.
patent: 5288934 (1994-02-01), deBroqueville
patent: 5430068 (1995-07-01), Subramanian
patent: 5445659 (1995-08-01), Khan et al.
patent: 5534040 (1996-07-01), Khan et al.
patent: 5554657 (1996-09-01), Brownscombe et al.
Fowler, II Russell E.
PRS, LLC
Taylor Jay G.
Teskin Fred
LandOfFree
Polymer deformulation by solvent solution filtration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymer deformulation by solvent solution filtration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer deformulation by solvent solution filtration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2136829