Shaped synthetic polymers containing a biodegradable substance
Patent 4218350 Issued on August 19, 1980. Estimated Expiration Date: 
September 8, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 8, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesBiodegradable synthetic resin sheet material containing starch and a fatty material Patent #: 4016117 InventorAssigneeApplicationNo. 05/940839 filed on 09/08/1978US Classes:523/210, Product having a material encapsulated in or impregnated in a nonreactant material264/137, Heat settable impregnant264/331.17, Hydrocarbon polymer524/47, Starch or derivative or farinaceous meal or flour524/52Solid polymer derived from ethylenic reactants onlyExaminersPrimary: Woodberry, Edward M.Attorney, Agent or FirmInternational ClassesC08L 101/00 (20060101)C08L 91/06 (20060101) C08L 91/00 (20060101) C08L 3/00 (20060101) C08L 3/02 (20060101) Foreign Application Priority Data1977-09-16 GBAbstractIn the manufacture of products made of starch filled plastics the polymer and starch granules are mixed with a lubricant immediately prior to forming. A feedstock material in accordance with the invention comprises particles of starch granules in admixture with a lubricant such as an oil or wax. | |
