A pigment system of different capsule-luminescent pigments have different emission spectra, preferably different color impressions of the luminescence emission, and possess substantially the same chemical stabilities. The capsule-luminescent pigments are based on organic or metalorganic luminescent substances.

A pigment system of different capsule-luminescent pigments have different emission spectra, preferably different color impressions of the luminescence emission, and possess substantially the same chemical stabilities. The capsule-luminescent pigments are based on organic or metalorganic luminescent substances.

In one aspect, compositions may include a degradable polymer composite, and methods of manufacturing polymer composites, wherein the degradable polymer composite contains a matrix formed from one or more polymers blended with one or more internal catalysts. In another aspect, methods of using a degradable polymer composite in a wellbore may include emplacing a degradable polymer composite in a wellbore traversing a subterranean formation, wherein the degradable polymer composite contains a matrix formed from one or more polymers blended with one or more internal catalysts; and contacting the degradable polymer composite with an aqueous fluid; and allowing the degradable polymer composite to at least partially degrade.

A plastic film is produced by blending a polymer with particles encapsulating an oxidizing agent, such as hydrogen peroxide. Optionally, an oxodegradable and/or oxo biodegradable additive that promotes degradation of the polymer in the presence of oxygen may be blended into the plastic film. The presence of the oxidizing agent within the plastic film ensures degradation of an article of manufacture, e.g., a plastic bag, when it is disposed of in an anaerobic environment, such as a landfill. In some embodiments, the particles are microcapsules and/or nanocapsules each having a polymer shell encapsulating a core that includes the oxidizing agent. In some embodiments, the particles are microparticles and/or nanoparticles each having a matrix in which the oxidizing agent is encapsulated.

A plastic film is produced by blending a polymer with particles encapsulating an oxidizing agent, such as hydrogen peroxide. Optionally, an oxodegradable and/or oxo biodegradable additive that promotes degradation of the polymer in the presence of oxygen may be blended into the plastic film. The presence of the oxidizing agent within the plastic film ensures degradation of an article of manufacture, e.g., a plastic bag, when it is disposed of in an anaerobic environment, such as a landfill. In some embodiments, the particles are microcapsules and/or nanocapsules each having a polymer shell encapsulating a core that includes the oxidizing agent. In some embodiments, the particles are microparticles and/or nanoparticles each having a matrix in which the oxidizing agent is encapsulated.

The present application discloses melt processable cellulose ester compositions comprising a cellulose ester, at least one alkaline additive, and at least one neutralizing agent. Plasticizers can be optionally used in the compositions. The present application also discloses processes for preparing the compositions and articles that can be made from the compositions. The compositions show improved degradation properties.

A plastic film is produced by blending a polymer with particles encapsulating an oxidizing agent, such as hydrogen peroxide. Optionally, an oxodegradable and/or oxo biodegradable additive that promotes degradation of the polymer in the presence of oxygen may be blended into the plastic film. The presence of the oxidizing agent within the plastic film ensures degradation of an article of manufacture, e.g., a plastic bag, when it is disposed of in an anaerobic environment, such as a landfill. In some embodiments, the particles are microcapsules and/or nanocapsules each having a polymer shell encapsulating a core that includes the oxidizing agent. In some embodiments, the particles are microparticles and/or nanoparticles each having a matrix in which the oxidizing agent is encapsulated.

A degradable rubber member for a downhole tool formed from a rubber material containing from 0.1 to 20 parts by mass of a degradation accelerator relative to 100 parts by mass of a degradable rubber (optionally containing other rubber materials and/or reinforcing materials), of which, preferably, the decrease rate of the mass or the 50% strain compressive stress after immersion for 24 hours in 150 C. water is not less than 5%, and/or the mass loss rate after immersion for 72 hours in 150 C. water is from 5 to 100%, and further, as desired, the tensile fracture strain at 66 C. is not less than 50%, the 70% strain compressive stress is not less than 10 MPa, and the compressive fracture strain is not less than 50%; a degradable seal member or a protecting member for downhole tools comprising such a rubber member; and a downhole tool such as a plug for well drilling, and a method for well drilling.

Disclosed herein are a number of methods, compositions, formulae, and closed loop systems for delaying the bio-assimilation of products constructed of at least one plastic-based material component and buried within a biological environment to prevent the premature release of biogases while also enhancing a subsequent biogas capturing period once the bio-assimilation period is triggered. The end result of bio-assimilation of the plastic material constructed in accordance with the principles of the present invention in a landfill is biogas that can be safely captured, a little water vapor, and biomass, which is returned to earth. It is a true carbon neutral closed loop synthetic plastics that began as natural gas may be turned back into renewable natural gas with little, perhaps no loss.

Disclosed herein are a number of methods, compositions, formulae, and closed loop systems for delaying the bio-assimilation of products constructed of at least one plastic-based material component and buried within a biological environment to prevent the premature release of biogases while also enhancing a subsequent biogas capturing period once the bio-assimilation period is triggered. The end result of bio-assimilation of the plastic material constructed in accordance with the principles of the present invention in a landfill is biogas that can be safely captured, a little water vapor, and biomass, which is returned to earth. It is a true carbon neutral closed loop synthetic plastics that began as natural gas may be turned back into renewable natural gas with little, perhaps no loss.