Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1998-03-30
1999-10-26
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
264140, 264235, 264346, 427222, 4273722, 427422, B29C 7102
Patent
active
059722673
ABSTRACT:
A process comprising the following steps: (a) maintaining the process in an essentially oxygen-free state; (b) introducing a first polymer directly from the polymerization reactor in which it was prepared, in molten form, into a mixer/compounder; (c) reducing any higher pressure accompanying the first polymer from the polymerization reactor to the mixer/compounder to a pressure in the range of about 0 to about 5 barg; (d) adding additives selected from the group consisting of antioxidants, second polymers, other polymer enhancing additives, and mixtures thereof to the mixer/compounder, and mixing same with the molten first polymer; (e) passing the molten mixture from step (d) through one or more screens, each having a maximum opening size of about 25 microns; (f) pelletizing the mixture from step (e); (g) introducing the pellets into a spraying chamber, the interior of said chamber being operated in a static condition; (h) spraying the pellets in the chamber with a crosslinking formulation including an organic peroxide and, optionally, a scorch retarder and/or a cure booster to coat the pellets; and (i) annealing the coated pellets to impregnate the pellets with the crosslinking formulation.
REFERENCES:
patent: 3455752 (1969-07-01), Gray et al.
patent: 3644315 (1972-02-01), Gardner et al.
patent: 3830872 (1974-08-01), Schrage et al.
patent: 4058583 (1977-11-01), Glander et al.
patent: 4071325 (1978-01-01), Platz et al.
patent: 4452750 (1984-06-01), Handwerk et al.
patent: 4615664 (1986-10-01), Kolossow
patent: 4832915 (1989-05-01), Messura et al.
patent: 5212349 (1993-05-01), Pelzer
patent: 5573790 (1996-11-01), Wehjte et al.
Dunchus Neil William
Kharazi Alex
Black D. T.
Jones Kenneth M.
Leuzzi P. W.
Silbaugh Jan H.
Union Carbide Chemicals & Plastics Technology Corporation
LandOfFree
Process for the production of a thermosetting composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of a thermosetting composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of a thermosetting composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-760239