A clearance narrowing material containing a brush-shaped polymer chain aggregate funned of multiple polymer chains immobilized on a substrate. The invention provides a clearance narrowing material which can effectively prevent fluid leakage through a clearance and which does not disturb relative movement of members to form a clearance, and can realize an article in which fluid leakage through a clearance can be effectively prevented and the members to form a clearance can move smoothly.

A method of reducing a leak or a risk of a leak of a pipe system is disclosed. The pipe system is filled with a composition that includes metal powder and xylenes, and a pressure is applied to the filled pipe system and the pipe system is drained of said composition. Also, the use of a composition for reducing a leak or a risk of a leak of a pipe system is disclosed.

A method of reducing a leak or a risk of a leak of a pipe system is disclosed. The pipe system is filled with a composition that includes metal powder and xylenes, and a pressure is applied to the filled pipe system and the pipe system is drained of said composition. Also, the use of a composition for reducing a leak or a risk of a leak of a pipe system is disclosed.

Provided is an oil leakage repairing material, wherein the oil leakage repairing material is a curable composition, oil absorption of the oil leakage repairing material before curing is 100% or greater, and oil absorption of the oil leakage repairing material after curing is 50% or less.

Device and method for injecting one or more additives into systems, such as a sealing agent to repair leaks in such systems, including air conditioning and refrigeration systems. In certain embodiments, the device is a disposable or single-use device, and includes a hose, tube, or conduit or the like that contains a sealing agent. Introduction of the sealing agent into the closed system allows the sealing agent to travel through the system and seal leaks therein. In some embodiments, one end of the hose is configured to connect to a manifold, and the other end of the device is configured to connect to the unit to be sealed. A check valve prevents unwanted backflow of refrigerant from the unit to be sealed.

A self-healing hydraulic seal is provided. The self-healing hydraulic seal is prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide.

A self-healing hydraulic seal is provided. The self-healing hydraulic seal is prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide.

A formulation for sealing, warping or cracking head gasket cooling, consisting essentially of 20% to 35% of water; 20% to 35% by ml of sodium silicate; 10% to 30% by ml of potassium silicate; 10% to 20% by ml of propylene glycol at pH 8-10; 5% to 10% by ml of citric acid; and 2.5% to 5% by ml of o-hydroxy phenyl triazane. The formulation also consisting of said sodium silicate and potassium silicate having a thickening or coagulant kinematic viscosity thereof and may further include benzoates, molybdates, alkali metal borates, sodium silicates, potassium silicates, triazoles, acids, boric salts, sodium hydroxides, potassium hydroxides or lithium hydroxides.

A formulation for sealing, warping or cracking head gasket cooling, consisting essentially of 20% to 35% of water; 20% to 35% by ml of sodium silicate; 10% to 30% by ml of potassium silicate; 10% to 20% by ml of propylene glycol at pH 8-10; 5% to 10% by ml of citric acid; and 2.5% to 5% by ml of o-hydroxy phenyl triazane. The formulation also consisting of said sodium silicate and potassium silicate having a thickening or coagulant kinematic viscosity thereof and may further include benzoates, molybdates, alkali metal borates, sodium silicates, potassium silicates, triazoles, acids, boric salts, sodium hydroxides, potassium hydroxides or lithium hydroxides.

Disclosed is a binder of vegetable origin based on oil, modified vegetable resin and optionally a heat stabilizer. Also disclosed are leakproofing membrane compositions, soundproofing membrane compositions, liquid sealing system compositions, asphalt mix coating compositions, asphalt coating compositions, primer compositions, varnish compositions, mastic compositions, adhesive compositions or binder emulsion compositions which comprise said binder. In addition, a method is disclosed for reducing the amount of bitumen of petroleum origin in said compositions.