The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

A biodegradable composite material which is produced by polymerizing a mixture of an aqueous dispersion of a natural polymer nanofiber including any one or more of a chitin nanofiber and a cellulose nanofiber, a dicarboxylic acid or a derivative thereof, and a diol. The biodegradable composite material has excellent biodegradable and mechanical properties.

Provided are a polymer material that contributes to environmental protection, has biodegradability, has excellent well-balanced mechanical properties, self-adhesion, and the like, is flexible, and has a reduced variation in the properties. The present invention provides a biodegradable rubber composition comprising natural rubber and an inorganic substance powder in a mass ratio of 45:55 to 10:90, and modified cellulose in an amount of 0.5 part by mass to 10.0 parts by mass relative to 100 parts by mass of the natural rubber.

An earth plant-based compostable biodegradable composition for the formation of a bioplastic and method of producing said resin, the composition comprising: about 17.5 to 45% ethanol-based green polyethylene by weight, about 20 to 25% calcium carbonate by weight, about 2 to 12% hemp hurd or soy protein by weight, about 32 to 45% starch by weight, and about 0.5 to 1% biodegradation additive by weight to enable biodegradation and composting of the bioplastic; wherein the composition is produced by first mill grinding the ethanol-based green polyethylene, calcium carbonate, hemp hurd or soy protein, starch and the biodegradation additive into fine powders, then mechanically mixing the fine powders one by one into a final mixture for about 5-25 minutes at a time, dry and without heat, and then heating the final mixture to about 220 to 430 degrees Fahrenheit.

A component of a downhole tool utilized in oil and natural gas exploration and production comprises inorganic hydrolysable compound-containing materials. The inorganic hydrolysable compounds grant the component the degradability/dissolution in aqueous environment. The inorganic hydrolysable compounds include, but not are limited to, hydrolysable carbides, nitrides, and sulfides, such as aluminum carbide (Al.sub.4C.sub.3), calcium carbide (CaC.sub.2), magnesium carbide (Mg.sub.2C.sub.3 or MgC.sub.2), manganese carbide (Mn.sub.3C), aluminum nitride (AlN), calcium nitride (Ca.sub.3N.sub.2), magnesium nitride (Mg.sub.3N.sub.2), aluminum sulfide (Al.sub.2S.sub.3), aluminum magnesium carbide (Al.sub.dMgC.sub.2), and aluminum zinc carbide (Al.sub.4Zn.sub.2C.sub.3).

A cellulosic particle contains cellulose as its base constituent. If hydrophobized silica particles are attached to the cellulosic particle, the percentage detachment upon sonication of the silica particles is 50% or less.

An earth plant-based compostable biodegradable composition for the formation of a bioplastic and method of producing said resin, the composition comprising: about 17.5 to 45% ethanol-based green polyethylene by weight, about 20 to 25% calcium carbonate by weight, about 2 to 12% hemp hurd or soy protein by weight, about 32 to 45% starch by weight, and about 0.5 to 1% biodegradation additive by weight to enable biodegradation and composting of the bioplastic; wherein the composition is produced by first mill grinding the ethanol-based green polyethylene, calcium carbonate, hemp hurd or soy protein, starch and the biodegradation additive into fine powders, then mechanically mixing the fine powders one by one into a final mixture for about 5-25 minutes at a time, dry and without heat, and then heating the final mixture to about 220 to 430 degrees Fahrenheit.

A biopolymer blend is provided that comprises a combination of three components: poly (butylene adipate-co-terephthalate) (PBAT); agriculture sourced polylactic acid (PLA); and engineered proteinaceous eggshell nanoparticles. The two polymer components can be present in any ratio but an approximate 70:30 ratio is preferred. The engineered proteinaceous eggshell nanoparticles are preferably about 10-25 nanometers. Also provided are methods of preparing biopolymer film and packaging components. Pelleted poly (butylene adipate-co-terephthalate) and agriculture sourced polylactic acid (PLA) are dissolved in chloroform and mixed together to form a polymer blend, and engineered proteinaceous eggshell nanoparticles are incorporated into the polymer blend, which is then extruded to create a biopolymer film or component.

The present invention discloses bottles and containers made up from polyvinyl alcohol composition that are biodegradable and soluble in high-temperature water which can be the best alternative to overcome the destructive effects of existing bottles and plastic containers wherein the said composition comprises water, polyvinyl alcohol, sodium hydroxide solution, stearyl alcohol, glycerine, talc powder as components of the composition.

Provided is a biodegradable resin molded product that exhibits excellent processability and sufficient strength as the molded product, is advantageous in terms of cost and at the same time, has excellent biodegradability under an environment, in particular, marine biodegradability, and a method for producing the same, and pellets used therefor. The molded product is produced using a biodegradable resin composition including a biodegradable resin and heavy calcium carbonate particles in a range by mass of 50:50 to 10:90.