Abstract: Siloxane compounds are removed from the atmospheres by silica supporting an organic sulfonic acid compound. The silica with the organic sulfonic acid compound has a specific surface area down to 500 m2/g and up to 750 m2/g and a pore volume down to 0.8 m3/g and up to 1.2 m3/g, both measured by nitrogen gas adsorption method and has a pore diameter down to 4 nm and up to 8 nm, at the peak of differential pore volume measured by nitrogen gas adsorption method. The durability of gas sensing element against siloxanes is improved.

Abstract: The MEMS type semiconductor gas detection element of the invention is a MEMS type semiconductor gas detection element 1 having a MEMS structure, for detecting hydrogen gas, comprising: a substrate 2; a gas sensitive portion 3 mainly made of a metal oxide semiconductor and provided to the substrate 2; a heating portion 4 for heating the gas sensitive portion 3; an inactive film 5 having hydrogen-permselective and formed outside the gas sensitive portion 3; a protective film 6 formed outside the inactive film 5, for suppressing deterioration of the gas sensitive portion 3.

Abstract: A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.

Abstract: Siloxane compounds are removed from the atmospheres by silica supporting an organic sulfonic acid compound. The silica with the organic sulfonic acid compound has a specific surface area down to 500 m2/g and up to 750 m2/g and a pore volume down to 0.8 m3/g and up to 1.2 m3/g, both measured by nitrogen gas adsorption method and has a pore diameter down to 4 nm and up to 8 nm, at the peak of differential pore volume measured by nitrogen gas adsorption method. The durability of gas sensing element against siloxanes is improved.

Abstract: A gas detection unit is accommodated within a housing of a gas sensor and the outside atmosphere of the housing is introduced through the filter to the gas detection unit. The filter comprises an organic polymer gas-permeable filter removing siloxanes and an inorganic filter removing alcohols and passing gases to be detected.

Abstract: A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.

Abstract: The MEMS type semiconductor gas detection element of the invention is a MEMS type semiconductor gas detection element 1 having a MEMS structure, for detecting hydrogen gas, comprising: a substrate 2; a gas sensitive portion 3 mainly made of a metal oxide semiconductor and provided to the substrate 2; a heating portion 4 for heating the gas sensitive portion 3; an inactive film 5 having hydrogen-permselective and formed outside the gas sensitive portion 3; a protective film 6 formed outside the inactive film 5, for suppressing deterioration of the gas sensitive portion 3.

Abstract: A glass chopped strand mat binder according to the invention can be supplied in an amount smaller than a conventional binder amount and can form a glass chopped strand mat having desired uniform strength. The invention is a glass chopped strand mat binder that includes a polyester resin powder (A) having a volume average particle diameter DV of 100 to 250 ?m, containing at most 20% by weight of particles with a volume based particle diameter of at least 300 ?m, and having a coefficient CV of variation of volume based particle diameter distribution of 0.1 to 30% as measured by the laser diffraction scattering method.

Abstract: A glass chopped strand mat binder according to the invention can be supplied in an amount smaller than a conventional binder amount and can form a glass chopped strand mat having desired uniform strength. The invention is a glass chopped strand mat binder that includes a polyester resin powder (A) having a volume average particle diameter DV of 100 to 250 ?m, containing at most 20% by weight of particles with a volume based particle diameter of at least 300 ?m, and having a coefficient CV of variation of volume based particle diameter distribution of 0.1 to 30% as measured by the laser diffraction scattering method.

Abstract: An oil for dust adsorption that includes a base oil (A), a nonionic surfactant (B), and an allergen inactivation component (C). This oil for dust adsorption can be used favorably on cleaning and wiping implements containing a dry fibrous substrate, such as mops and wipers and the like.

Abstract: An oil for dust adsorption that includes a base oil (A), a nonionic surfactant (B), and an allergen inactivation component (C). This oil for dust adsorption can be used favorably on cleaning and wiping implements containing a dry fibrous substrate, such as mops and wipers and the like.

Abstract: The bag has at least one rip which is normally sealed by sewing, adhesion or welding with a calculated strength so that the rip may open and relieve the bag pressure when the bag pressure exceeds a predetermined pressure due to collision of the passenger against the inflated bag. The open rip may be exposed to the atmosphere, but alternatively an inflatable auxiliary bag may be attached to the former bag in such an arrangement that the discharged gas is received in the auxiliary bag.