Abstract: Disclosed is a laser verticality/horizon indicator for construction. An object of the present invention is to provide a laser verticality/horizon indicator for construction that realizes irradiation of laser beam and indication of both a vertical point and a horizontal line using optical refraction, thereby achieving general use purposes and enhancing the working efficiency. Another object of the present invention is to provide a laser verticality/horizon indicator for construction that embodies a scientific and systematic use mechanism through electrically controlled operation of equipment to indicate vertical and horizontal positions as a precise measurement and to enhance the handling efficiency of the equipment.

Abstract: The present invention relates to a coated granular sodium percarbonate for detergent and its manufacturing process, and more particularly to a coated granular sodium percarbonate and its manufacturing process, wherein the surface of said sodium percarbonate establishes a multiple coating layer by being internally coated with a specific composition containing alkali metal silicate while externally coated with a specific composition containing alkali metal sulfate on upper part of said internally coated layer thus providing said sodium percarbonate an excellent dissolving rate in water as well as a good storage stability, preventing it from caking during delivery or storage, and being ultimately utilized as an effective detergent bleach containing zeolite as its detergent builder.

Abstract: The present invention relates to a coated granular sodium percarbonate for detergent and its manufacturing process, and more particularly to a coated granular sodium percarbonate and its manufacturing process, wherein the surface of said sodium percarbonate establishes a multiple coating layer by being internally coated with a specific composition containing alkali metal silicate while externally coated with a specific composition containing alkali metal sulfate on upper part of said internally coated layer thus providing said sodium percarbonate an excellent dissolving rate in water as well as a good storage stability, preventing it from caking during delivery or storage, and being ultimately utilized as an effective detergent bleach containing zeolite as its detergent builder.

Abstract: This invention relates to a composite composition comprising granular sodium percarbonate with better stability in storage and fast solubility in water for the purpose of the sole use thereof or as a composition of a bleaching agent.

Abstract: The present invention relates to a novel 1,3-diphenylpropane derivative having an inhibitory activity against tyrosinase represented by the following formula (I): ##STR1## in which - - represents double or single bond,R.sub.1 represents hydrogen or C.sub.1 -C.sub.10 alkyl,R.sub.2 represents C.sub.1 -C.sub.5 alkyl or C.sub.1 -C.sub.5 alkoxyalkyl, orR.sub.1 and R.sub.2 together represent a 5 to 6 membered heterocycle which can be substituted by C.sub.1 -C.sub.5 alkyl and which contains oxygen as the hetero atom,R.sub.3 represents hydrogen or C.sub.1 -C.sub.7 alkyl,R.sub.4 represents hydrogen, hydroxy, or oxo, andR.sub.5 and R.sub.6 mindependently of one another represent hydrogen or C.sub.1 -C.sub.5 alkyl.