C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/1000, 400/11
C08K 5/00 (2006.01) B65D 65/46 (2006.01) C08L 3/02 (2006.01) C08L 21/00 (2006.01) C08L 57/00 (2006.01)
Patent
CA 1335005
A degradable polymer composition is disclosed which comprises a blend of a normally stable chemically saturated polymer, such as polyethylene, a less stable chemically unsaturated polymer or copolymer, such as a styrene/butadiene block copolymer, or natural rubber, an antioxidant active over a limited period and a latent pro-oxidant, such as an organic salt of a transition metal, e.g. cobalt naphthenate. The presence together of the anti-oxidant and the pro-oxidant give rise to a period of induction before a sharp loss of physical strength occurs, whereby the period of induction can be exploited as the effective working life of the polymer composition. The polymer composition preferably also includes filler particles of a directly biologically sensitive material such as natural starch, a derivative of natural starch, a natural protein or a natural cellulose product or a powdered sugar of melting point higher than the processing temperature of the host polymer composition, whereby, the biological breakdown, in natural environments or in the especially biologically active surroundings of composting urban garbage, of the molecular fragments created by the onset of oxidative scission of the molecular chains of the chemically saturated polymer is accelerated by the presence of said filler particles.
567389
Epron Industries Limited
Ridout & Maybee Llp
LandOfFree
Degradable plastics based on polyolefin/polydiene blends does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Degradable plastics based on polyolefin/polydiene blends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Degradable plastics based on polyolefin/polydiene blends will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1308636