Back to results
US 7,071,249 B2Granted
Biodegradable starch resin and method for making same
OwnerWilliam Ho, Ling-I Cheninventors
Life of this patent
Estimating the term…
Abstract
The present invention relates generally to biodegradable compositions containing starch, especially in combination with a polymer containing pendant carboxylic acid groups, a polyolefin homopolymer or copolymer, water, an oil component, and other optional components, including (co)polymers, additives, and/or fillers. These biodegradable compositions may preferably be used in footwear articles and smoking-related filters.
Claims27
A biodegradable polymeric composition comprising:
- from about 40 to about 52 percent by weight of a starch component;
- from about 10 to about 15 percent by weight of a polymer comprising pendant carboxylic acid functional groups;
- from about 8.5 to about 12 percent by weight of a polyolefin homopolymer or copolymer;
- from about 2.5 to about 4 percent by weight of water;
- from about 1.5 to about 3.5 percent by weight of a polymeric polyol;
- from about 6 to about 8 percent by weight of an oil component;
- from about 3 to about 5 percent by weight of a wax component;
- and
- from about 20 to about 28 percent by weight of a powdered rubber compound.
6 more elements
A biodegradable polymeric composition comprising:
- from about 45 to about 60 percent by weight of a starch component;
- from about 10 to about 18 percent by weight of a polymer comprising pendant carboxylic acid functional groups;
- from about 8 to about 15 percent by weight of a polyolefin homopolymer or copolymer;
- from about 2.5 to about 4 percent by weight of water;
- from about 1.5 to about 3.5 percent by weight of a polymeric polyol;
- from about 3.5 to about 6 percent by weight of an oil component;
- from about 3 to about 5 percent by weight of a liquid wax component;
- and
- from about 12 to about 20 percent by weight of a powdered rubber compound.
6 more elements
A biodegradable polymeric composition comprising:
- from about 40 to about 50 percent by weight of a starch component;
- from about 10 to about 15 percent by weight of a polymer comprising pendant carboxylic acid functional groups;
- from about 15 to about 20 percent by weight of a polyolefin homopolymer or copolymer;
- from about 2.5 to about 4 percent by weight of water;
- from about 5 to about 7 percent by weight of an oil component;
- and
- from about 10 to about 20 percent by weight of a cellulosic polymer.
4 more elements
Dependencies are inferred from the claim text.