The present invention is concerned with a reactive surfactant composition for emulsion polymerization, which is able to micronize the particle diameter of a polymer emulsion and to reduce the addition amount of the reactive surfactant composition to be used.

The reactive surfactant composition for emulsion polymerization of the present invention contains a reactive anionic surfactant (component A) represented by the following formula (I), the component A being satisfied with the following requirement R:

##STR00001## wherein AO represents an alkyleneoxy group having a carbon number of 3 or more and 18 or less; E represents an ethyleneoxy group; p represents an integer of 1 or more and 15 or less; m represents an integer of 0 or more; n represents an integer of 0 or more; M.sup.+ represents a hydrogen ion or a cation; and plural kinds of AOs may coexist.

Requirement R: An average addition molar number m of AO is a number of 1 or more and 50 or less; an average addition molar number n of EO is a number of 0 or more and 200 or less; and when in the component A, a component having an addition molar number of AO of (m3) or less is defined as (component A-1), and a component having an addition molar number of AO of (m+2) or more is defined as (component A-2), X in the following formula (I) is less than 30, provided that when m is less than 3, (m=0) is defined as (component A-1):

X={(molar number of component A-1)+(molar number of component A-2)}(molar number of component A)100(I).

Disclosed is a method for preparing 2,2-dipyridine and derivatives thereof. The method includes: using pyridine represented by formula I or a derivative thereof as a raw material to generate 2,2-dipyridine represented by formula II by performing dehydrogenative coupling under the action of a supported catalyst in the presence of additives, where R is H, C.sub.1-C.sub.2 alkyl, Cl, or Br. The method of the present invention features wide adaptability to raw materials, high atomic utilization rate, high catalyst activity, long service life, and fewer by-products.

The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.

The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.

The present invention relates to a catalyst for dehydration of a primary alcohol, a method of preparing the same, and a method of producing an alpha-olefin using the same. The catalyst for dehydration of a primary alcohol according to the present invention has an excellent catalyst stability while having an excellent activity with respect to dehydration, and a high turnover frequency, such that a linear alpha-olefin with high purity may be produced with a high selectivity even in a case where a relatively small amount of a cocatalyst is added as compared with a homogeneous catalyst system.

The present invention relates to a catalyst for dehydration of a primary alcohol, a method of preparing the same, and a method of producing an alpha-olefin using the same. The catalyst for dehydration of a primary alcohol according to the present invention has an excellent catalyst stability while having an excellent activity with respect to dehydration, and a high turnover frequency, such that a linear alpha-olefin with high purity may be produced with a high selectivity even in a case where a relatively small amount of a cocatalyst is added as compared with a homogeneous catalyst system.

A method for producing a dehydrogenation catalyst, comprising: a step of impregnating a carrier with a first solution having a tin source dissolved therein, so as to have tin supported on the carrier; and a step of impregnating the carrier with a second solution having an active metal source dissolved therein, so as to have the active metal supported on the carrier, wherein the tin source is at least one selected from the group consisting of sodium stannate and potassium stannate, and the active metal source has at least one active metal selected from the group consisting of platinum, ruthenium and iridium, and has no chlorine atom.

A method for producing a dehydrogenation catalyst, comprising: a step of impregnating a carrier with a first solution having a tin source dissolved therein, so as to have tin supported on the carrier; and a step of impregnating the carrier with a second solution having an active metal source dissolved therein, so as to have the active metal supported on the carrier, wherein the tin source is at least one selected from the group consisting of sodium stannate and potassium stannate, and the active metal source has at least one active metal selected from the group consisting of platinum, ruthenium and iridium, and has no chlorine atom.

A water-based paint composition has performance to decompose ozone.

The water-based paint composition includes a manganese oxide-based catalyst, an activated carbon, a polyacrylate-based dispersant, a water-soluble resin, a pH adjuster, and a water-based solvent.

A water-based paint composition has performance to decompose ozone.

The water-based paint composition includes a manganese oxide-based catalyst, an activated carbon, a polyacrylate-based dispersant, a water-soluble resin, a pH adjuster, and a water-based solvent.