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End use applications of biodegradable polymers    
United States Patent5444113   
Link to this pagehttp://www.wikipatents.com/5444113.html
Inventor(s)Sinclair; Richard G. (Columbus, OH); Lipinsky; Edward S. (Worthington, OH); Browning; James D. (Columbus, OH); Bigg; Donald (Columbus, OH); Rogers; Thomas A. (Golden, CO)
AbstractDisclosed are products made of degradable materials which include a hydrolytically degradable polymer. The degradable materials can be internally or externally modified. The internally modified polymer composition has polymers modified by the use of comonomers having a relatively high molecular weight. The externally modified polymer composition includes a modifier, wherein the modifier is compatible with the polymer and the modifier is nontoxic, nonvolatile and nonfugitive. The various degradable materials include films, fibers, extruded and molded products, laminates, foams, powders, nonwovens, adhesives and coatings. The disclosed materials are particularly useful for the production of a variety of products in high volumes which are suitable for recycling after use or which are discarded into the environment in large volumes.
   














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Patent Text Patent PDF Print Page Summary File History
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Inventor     Sinclair; Richard G. (Columbus, OH); Lipinsky; Edward S. (Worthington, OH); Browning; James D. (Columbus, OH); Bigg; Donald (Columbus, OH); Rogers; Thomas A. (Golden, CO)
Owner/Assignee     Ecopol, LLC (Golden, CO)
Patent assignment
All assignments
Publication Date     * August 22, 1995
Application Number     08/128,520
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     September 29, 1993
US Classification     524/306 523/124 524/310 524/315 524/317 524/320 528/354 528/361
Int'l Classification     C08K 005/10
Examiner     Michl; Paul R.
Assistant Examiner     Cain; Edward J.
Attorney/Law Firm     Sheridan Ross & McIntosh
Address
Parent Case     REFERENCE TO RELATED APPLICATIONS The present application is a continuation-in-part of U.S. patent application Ser. No. 07/950,854, filed Sep. 22, 1992 entitled "Degradable Polymer Composition"; which is a continuation-in-part of U.S. patent application Ser. No. 07/579,000 filed Sep. 6, 1990 now U.S. Patent No. 5,216,050, issued Jun. 1, 1993, entitled "Blends of Polylactic Acid"; and U.S. patent application Ser. No. 07/579,005 filed Sep. 6, 1990 now U.S. Pat. No. 5,180,765, issued Jan. 19, 1993, entitled "Biodegradable Packaging Thermoplastics from Polylactic Acid"; and of pending U.S. patent application Ser. Nos. 07/579,460, entitled "Degradable Impact Modified Polylactic Acid"; and 07/579,465, entitled "Biodegradable Replacement of Crystal Polystyrene"; all filed on Sep. 6, 1990; which are continuation-in-parts of U.S. patent application Ser. Nos. 07/387,676; 07/387,678; 07/386,844; and 07/387,670; respectively, all filed on Jul. 31, 1989, and now abandoned; which are continuations-in-part of U.S. patent application Ser. Nos. 07/229,894, filed Aug. 8, 1988; 07/229,896, filed Aug. 8, 1988; 07/317,391, filed Mar. 1, 1989; and 07/229,939, filed Aug. 8, 1988; respectively, all now abandoned; and all of which are incorporated by reference herein in their entirety.
Priority Data    
USPTO Field of Search     524/306 524/310 524/315 524/317 524/320 523/124 528/354 528/361
Patent Tags     end applications biodegradable polymers
   
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