Takeda Chemical Industries, Inc.

Mizusawa Industrial Chemicals, Ltd.

Japan Envirochemicals, Ltd.

Motoya Mouri

Tatsuro Takeuchi

Tetsuya Sahara

Hiroyuki Koyou

Kenji Hiramatsu

Juichi Yanagi

Takeshi Ueda

Toshio Kimura

Shoichi Miyamura

Saji Okabayashi

A removing agent for heavy metal ion in water which comprises synthetic zeolite, wherein 10 mol % or more of a total amount of exchangeable cation is substituted with magnesium ion and 60 mol % or more thereof is substituted with magnesium ion and calcium ion, and activated carbon at a weight ratio of 2:98 to 50:50 can effectively adsorb and remove heavy metal ions such as lead in water as well as residual chlorine and trihalomethane efficiently, particularly, in tap water, so as to allow delicious and healthful water without disturbing the balance between calcium ion and magnesium ion.

Remover for heavy metals contained in water

By using a polymer containing a dichloroethylene structure derived from a vinylidene chloride monomer in the molecule in place of an unsaturated polyester and an urethane resin, there can be obtained an excellent adsorbent which has improved workability in case of granulation and high strength, and causes little deterioration of its ion exchange capacity even after a large number of regenerations.

Ion adsorbent

A malodorous component is eliminated using a catalytic composition comprising a phosphate of a tetravalent metal (titanium or other Group 4 elements of the Periodic Table of Elements), a hydroxide of a divalent metal (copper, zinc or other transition metal), and a photocatalyst. The photocatalyst includes sulfide-semiconductors, oxide-semiconductors and other photo-semiconductors, e.g. titanium oxide. The composition may further contain silicon dioxide and/or a silver component. The catalytic composition insures efficient elimination of not only acidic components and basic components but also neutral components over a long period, irrespective of with or without a light irradiation.

Catalytic compositions and a deodorizing method using the same

A fiber is incorporated with a titanium oxide or other photocatalyst and an adsorbent comprising a phosphate of a tetravalent metal and a hydroxide of a divalent metal. The amounts of the photocatalyst and the adsorbent based on the total amount of the fiber are, about 0.1 to 25% by weight and about 0.1 to 25% by weight, respectively. The fiber may have a composite structure such as sheath-core structure in which the concentration of the photocatalyst in the sheath is higher than that of the core, and may be a fiber having a modified cross section.

Deodorizable fibers and method of producing the same

Molding and calcining of zeolite powder

A binder for preparing an aqueous ceramics slurry, which contains a hydrophilic polymer such as a water-soluble (meth)acrylic polymer, a polysaccharide of natural origin such as pectin, pectinic acid, glucan, etc., and a polyvinyl compound such as poly(vinyl butyral). The aqueous ceramics slurry contains less than 25 parts by weight of the binder to 100 parts by weight of ceramics powder. The slurry is applied on a carrier film by a doctor blade method and dried to give a ceramics green sheet. A ceramics sheet can be produced by sintering the green sheet.

Binders for forming a ceramics sheet and applications thereof

Adsorbent composition and method of producing same

An aqueous plastic composition of an inorganic powder which per se has substantially no plasticity which comprises: the inorganic powder and a polysaccharide of natural origin. The molding and sintering of the plastic composition provide a sintered body of high mechanical strength and dimensional accuracy.

Growing community of inventors

Suita, Japan

Motoya Mouri