Abstract:
Provided is an encapsulated formulation comprising a central portion 1 and a shell portion 2 that covers the surface of the central portion 1. The central portion 1 includes a material that expands in the presence of a liquid, and the shell portion 2 includes a material that can induce expansion of the central portion 1 in response to the liquid.
Abstract:
Provided is an encapsulated formulation comprising a central portion 1 and a shell portion 2 that covers the surface of the central portion 1. The central portion 1 includes a material that expands in the presence of a liquid, and the shell portion 2 includes a material that can induce expansion of the central portion 1 in response to the liquid.
Abstract:
A capsule comprising a center section 1 and an outer shell section 2 covering the surface of this center section 1. The center section 1 includes a viscosity-reducing material that reduces the viscosity of a fluid used for hydraulic fracturing. The outer shell section 2 includes a styrene-butadiene copolymer that is capable of controlled release of the center section in the fluid and has a glass transition temperature of -20-80°C.
Abstract:
A capsule comprising a center section and an outer shell section 2 covering the surface of this center section. The center section includes a viscosity-reducing material that reduces the viscosity of a fluid used for hydraulic fracturing. The outer shell section 2 includes a plurality of particulate matter 3 and a holding material that holds the plurality of particulate matter 3 and is capable of sustained release of the center section in the fluid. In the outer shell section 2, the plurality of particulate matter 3 is distributed such that the content amount has at least one maximum in directions away from the center section.
Abstract:
A capsule comprising a center section 1 and an outer shell section 2 covering the surface of this center section 1. The center section 1 includes a viscosity-reducing material that reduces the viscosity of a fluid used for hydraulic fracturing. The outer shell section 2 includes a styrene-butadiene copolymer that is capable of controlled release of the center section in the fluid and has a glass transition temperature of -20-80°C.
Abstract:
A capsule comprising a center section and an outer shell section 2 covering the surface of this center section. The center section includes a viscosity-reducing material that reduces the viscosity of a fluid used for hydraulic fracturing. The outer shell section 2 includes a plurality of particulate matter 3 and a holding material that holds the plurality of particulate matter 3 and is capable of sustained release of the center section in the fluid. In the outer shell section 2, the plurality of particulate matter 3 is distributed such that the content amount has at least one maximum in directions away from the center section.
Abstract:
A capsule comprising a center section 1 and an outer shell section 2 covering the surface of this center section 1. The center section 1 includes a viscosity-reducing material that reduces the viscosity of a fluid used for hydraulic fracturing. The outer shell section 2 includes a styrene-butadiene copolymer that is capable of controlled release of the center section in the fluid and has a glass transition temperature of -20-80°C.
Abstract:
A capsule comprising a center section and an outer shell section 2 covering the surface of this center section. The center section includes a viscosity-reducing material that reduces the viscosity of a fluid used for hydraulic fracturing. The outer shell section 2 includes a plurality of particulate matter 3 and a holding material that holds the plurality of particulate matter 3 and is capable of sustained release of the center section in the fluid. In the outer shell section 2, the plurality of particulate matter 3 is distributed such that the content amount has at least one maximum in directions away from the center section.
Abstract:
This carrier system carries at least one type of sensitizing dye described in (A) below and at least one type of sensitizing dye described in (B) below: (A) a sensitizing dye having a À-conjugated group and at least one anchor group, wherein the À-conjugated group and every one of the anchor group(s) are connected by a spacer having at least one alkylene and having an atomicity of 5 to 20; and (B) a sensitizing dye having a À-conjugated group and at least one anchor group, wherein the À-conjugated group and at least one anchor group are connected by a direct bond or by a spacer having at least one alkylene and having an atomicity of 1 to 4. In (A) and (B), the spacer is composed of carbon atoms, or carbon atoms and oxygen atom(s) etc., under predetermined conditions (see Description), and may have a branched chain or a ring structure.