B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
204/91.72
B29C 71/04 (2006.01) C08J 7/18 (2006.01) D04H 1/56 (2006.01)
Patent
CA 1299515
Abstract POLYPROPYLENE ARTICLES AND METHOD FOR PREPARING SAME Polypropylene articles are provided. The polypropylene articles comprise non-crystalline mesomorphous polypropylene hav- ing olefinic unsaturation-containing monomers graft-polymerized thereon by ionizing radiation in a dosage sufficient to degrade crystalline polypropylene. The irradiated polypropylene articles retain useful tensile properties after storage periods of as long as at least about four months. Further provided is a method for preparing irradiated polypropylene articles having olefinic unsaturation-containing monomers graft-polymerized thereon comprising the steps of melt extruding polypropylene; quenching the extruded polypropylene immediately after extrusion to provide non-crystalline mesomorphous polypropylene; coating the non- crystalline mesomorphous polypropylene with an ionizing radiation graft-polymerizable monomer; and irradiating the coated non- crystalline mesomorphous polypropylene with a dosage of ionizing radiation sufficient to degrade crystalline polypropylene and sufficient to effect graft-polymerization of the monomer onto the surface of the polypropylene.
568393
Insley Thomas I.
Krueger Dennis L.
Meyer Daniel E.
Rolando Richard J.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
Non-crystalline mesomorphous polypropylene articles with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-crystalline mesomorphous polypropylene articles with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-crystalline mesomorphous polypropylene articles with... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1186651