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| Number | Title | Issue Date |
| 7361727 | Copolymerization of 1,4-dioxan-2-one and a cyclic ester monomer producing thermal stabilized 1,4-dioxan-2-one (co)polymers A polymerization process to derive a thermal-stabilized poly(1,4-dioxan-2-one) and cyclic ester monomer copolymer using a coordination-insertion catalyst/initiator. 1,4-dioxan-2-one and cyclic ester monomer, each containing less than 100-ppm water and having an acid... | 04/22/2008 |
| 6284359 | Starch-based core products for use in rolled paper goods A biodegradable, water dispersible shaped core product useful in winding or rolling and storage of paper goods is provided by extruding starch which has a particle size of 800 to 1200 microns into an expanded, closed cell starch product.... | 09/04/2001 |
| 6265463 | Degradation of expandable polymer bead products From an environmental viewpoint, it is desireable to cause degradation of expanded EPS beads and foam cups and other products formed from expanded EPS beads, which are composed of polystyrene and a blowing agent such as pentane. For this purpose, the pres... | 07/24/2001 |
| 6184261 | Water-resistant degradable foam and method of making the same A foam that is the extrudate of a mixture of a biodegradable polymer, starch, talc, and a blowing agent is provided. This foam is made by extruding a mixture of the above-listed components. This foam is water-resistant and in some variations waterproof ma... | 02/06/2001 |
| 6146892 | Fibrillar matrices Methods and compositions are described that provide three-dimensional fibrillar matrices useful as, among other things, structural prosthetics and scaffolds for cells. The porous fibrillar matrices of the present invention have desirable mechanical proper... | 11/14/2000 |
| 5854345 | Biodegradable polyester and natural polymer compositions and expanded articles therefrom Expanded articles have a compressible and resilient body including two biodegradable components. One component preferably is starch or a modified starch. Another component is a water insoluble, synthetic polymer, preferably a hydroxy-functional polyester.... | 12/29/1998 |
| 5763500 | Expanded solid composition whose matrix comprises a starch-based cellular network and which contains size-graded spheroidal polyamide particles and its uses in topical application The present application relates to expanded solid compositions whose matrix comprises a cellular network formed from a starch-rich product and contains size-graded spheroidal polyamide particles. These compositions constitute new dosage forms for cosmetic... | 06/09/1998 |
| 5665786 | Biodegradable polyester and natural polymer compositions and expanded articles therefrom Expanded articles have a compressible and resilient body including two biodegradable components. One component preferably is starch or a modified starch. Another component is a water insoluble, synthetic polymer, preferably a hydroxy-functional polyester.... | 09/09/1997 |
| 5618855 | Biodegradable copolymers and plastic articles comprising biodegradable copolymers The present invention relates to biodegradable PHA copolymers comprising at least two randomly repeating monomer units. The present invention further relates to a plastic article comprising a biodegradable copolymer, wherein the biodegradable copolymer co... | 04/08/1997 |
| 5556895 | Degradable polydioxaneone-based materials Disclosed are degradable materials including molded products, laminates, foams, nonwoven materials, adhesives, coatings and films, and particularly packaging films. The materials are made using polydioxaneone polymers comprising at least two different dio... | 09/17/1996 |
| 5508036 | Devices for preventing tissue adhesion A device for preventing adhesions or binding of tissue to tissue or of tissue to bone which comprises a composite of a first layer and a second layer, each of which comprises a biodegradable polymer. The first layer is selected from the group consisting o... | 04/16/1996 |
| 5447962 | Degradable foam and use of same Foams comprising innumerable cells dispersed in thermoplastic polymer compositions substantially consisting of polylactic acid or a copolymer of lactic acid and hydroxycarboxylic acid and having degradable characteristics in the natural environment. The f... | 09/05/1995 |
| 5437924 | Compostable, biodegradable foam core board A compostable, biodegradable foam core board has a facing sheet adhered to a foam core sheet made of a foamable biodegradable material selected from a polyvinyl alcohol polymer, a starch-based thermoplastic polymer, a polylactic acid polymer, and other fo... | 08/01/1995 |
| 5360830 | Expanded articles of biodegradable plastic materials Expanded articles of biodegradable plastic material having a closed pore structure and a density of from 0.01 to less than 0.1 g/cm3 are produced by extrusion of a composition including starch and a synthetic polymer selected from ethylene-viny... | 11/01/1994 |
| 5278194 | Environmentall dispersible syntactic foam A syntactic foam product having a desired configuration is set forth. The product comprises a plurality of rigid gas filled bubbles arranged in the desired configuration. The bubbles are defined by respective individual and discrete substantially spherica... | 01/11/1994 |
| 5248702 | Starch-based, biodegradable packing filler and method of preparing same Starch-based biodegradable packaging fillers are provided which have high volumes, low weights, and excellent compressibility and resiliency properties. The products of the invention are fabricated by extrusion of a starch substrate, most preferably norma... | 09/28/1993 |
| 5219646 | Polyester blends and their use in compostable products such as disposable diapers The invention provides novel blends of starch with polyesters, and shaped articles of such blends, including fibers, foams and films, nonwovens from the fibers and disposable products such as diapers. The products are degradable under the conditions typic... | 06/15/1993 |
| 5216036 | Photodegradable expanded polymeric foam Foamable photodegradable suspension polymers of vinyl aromatic monomers may be prepared by dissolving a copolymer of a vinyl aromatic monomer and a vinyl ketone in the vinyl aromatic monomer and suspension polymerizing the resulting mixture. The resulting... | 06/01/1993 |
| 5210108 | Degradable foam materials Environmentally benign closed cell compositions made by foaming star-shaped polymers with a plurality of poly(hydroxy acid) chains attached to a central polyfunctional compound having a plurality of hydroxyl and/or amino groups.... | 05/11/1993 |
| 5190984 | Photodegradable expanded polymeric foam Foamable photodegradable suspension polymers of vinyl aromatic monomers may be prepared by dissolving a copolymer of a vinyl aromatic monomer and a vinyl ketone in the vinyl aromatic monomer and suspension polymerizing the resulting mixture. The resulting... | 03/02/1993 |
| 5134171 | Degradable foam materials Closed cell rigid polyhydroxy acid resin compositions foamed with environmentally benign, which compositions are degradable and cause minimal environmental impact when discarded.... | 07/28/1992 |
| 5110838 | Biodisintegrable thermoplastic resin foam and a process for producing same A biodisintegrable thermoplastic resin foam and a process for producing same are disclosed, the biodisintegrable thermoplastic resin foam being comprised as a substrate thereof a mixed resin comprising 5-40 weight % of a thermoplastic resin decomposable b... | 05/05/1992 |
| 4725273 | Artificial vessel having excellent patency An artificial vessel having an excellent patency, wherein the vessel wall is made of an elastomer having a porous structure and the contact surface with blood has pores with a mean diameter of from 1 to 100 μm and holes with a mean diameter of from 0.01 ... | 02/16/1988 |
| 4661530 | Biocompatible, antithrombogenic materials suitable for reconstructive surgery Biocompatible, highly antithrombogenic material for reconstructive surgery, which is based on poly (L-lactic acid) and or poly (dL-lactic acid) and segmented polyester and urethanes or polyether urethanes.... | 04/28/1987 |
| 4256851 | Degradable plastic composition containing unsaturated alcohol or ester thereof There is disclosed an environmentally degradable plastic composition comprising an organic polymeric material having dispersed therein at least one ethylenically unsaturated alcohol or ethylenically unsaturated ester derived therefrom as a readily autoxid... | 03/17/1981 |
| 4224416 | Degradable plastic composition containing amine There is disclosed an environmentally degradable plastic composition comprising an organic polymeric material having dispersed therein at least one amine compound as a readily autoxidizable organic substance.... | 09/23/1980 |
| 4212955 | Degradable plastic composition containing ortho ester There is disclosed an environmentally degradable plastic composition comprising an organic polymeric material having dispersed therein at least one trialkyl ortho ester as a readily autoxidizable organic substance.... | 07/15/1980 |
| 4197371 | Water vapor absorbing and transmitting sheet material of rubber containing a swellable cross-linked cellulose ether or starch ether and a process for the manufacture thereof This invention relates to an improvement in a sheet material comprising natural or synthetic rubber or a rubber-like polymer, which is capable of absorbing and transmitting water vapor and which contains a uniformly incorporated addition of polymer partic... | 04/08/1980 |
| 4144153 | Radiation process for producing 1,2-polybutadiene foamed products A process for producing a photodegradable rubber foamed products of excellent softness, which comprises mixing 1,2-polybutadiene with 0.1 to 3.0% of a photosensitizer and with a thermally decomposable foaming agent, irradiating with ultraviolet ray of a w... | 03/13/1979 |
| 4132839 | Biodegradable hydrophilic foams and method Disclosed herein are novel prepolymers which, when foamed provide hydrophilic polyurethane foams which are biodegradable.... | 01/02/1979 |
| 4076655 | Photodegradable atactic polystyrene compositions Polystyrene compositions, including polystyrene film and foamed polystyrene, containing as a photodegradability enhancing agent an organic carbonyl-containing compound, preferably benzoin; and such compositions containing in addition to said agent, a pro-... | 02/28/1978 |
| 4049592 | Biodegradable hydrophilic foams and method The invention disclosed is directed to biodegradable hydrophilic polyurethane structures prepared by using an isocyanate capped hydroxyester polyol reactant with large amounts of aqueous reactant. The resultant foam has economy in handling, and upon conta... | 09/20/1977 |
| 3951884 | Photo-degrading resinous composition and shaped article manufactured therefrom A photo-degrading resinous composition which comprises: A. from 50 to 100% by weight of a copolymer composed of i 95.0 - 99.9 % by weight of a monomer selected from the group consisting of styrene and methyl methacrylate, (ii) 5.0 - 0.1% by weight of a diene m... | 04/20/1976 |
