摘要:
A protective material comprising a cloth layer wherein the apparent density at one of the surfaces is smaller than that of the entire body of the cloth layer and a layer of active carbon integrally provided on the other surface of the cloth layer.
摘要:
A filter for removing dust from fluids, which comprises fibers bonded each other with a binder and hot-pressed, having a fiber density of 0.01 to 0.1 at the fluid inlet side and a fiber density of 0.05 to 0.5 at the fluid outlet side with a continuous fiber density gradient and having a uniform distribution of fiber material in direction of thickness, and a process for the production thereof. The filter is particularly useful as an air filter for automobiles or air conditioners.
摘要:
A magnetic recording medium having a magnetic layer of superior smoothness and excellent abrasion resistance and durability. The magnetic layer contains a polyurethane resin having a metal sulfonate group in the amount of 10-1000 equivalents/10.sup.6 g of the polymer; an ester of C.sub.10 -C.sub.18 fatty acid with butyl cellosolve and ferromagnetic fine particles.
摘要:
A filter for removing dusts from fluids, which comprises fibers bonded each other with a binder and/or hot-pressed, having a fiber density of 0.01 to 0.1 at the side of inflow of fluid to be treated and a fiber density of 0.05 to 0.5 at the side of outflow of the fluid with a continuous fiber density gradient and having a uniform distribution of fiber material in direction of thickness, and a process for the production thereof. The filter is particularly useful as an air filter for automobiles or air conditioner.