Central Glass Company, Limited

Yukio Ikeda

Kazuhiko Maeda

Tetsuo Takematsu

Takeo Komata

Kentaro Tsutsumi

Takashi Kume

Kaoru Mori

Matsue Kawamura

Kiyoshi Suzuki

Haruhiko Komoriya

Yoshi Hirashima

Mikio Ootani

Masayuki Shiota

Yumiko Kohda

Yutaka Maruyama

Seiji Hasegawa

Shuyo Akama

Yumiko Koda

Shoji Yamaoka

Michitaka Ohtani

N-phenyltetrahydrophthalamic acid derivatives, methods of producing same, and herbicides containing same as effective components

The invention relates to a coated granular fertilizer having a film covering fertilizer granules. This film comprises a polyurethane resin prepared by a method comprising the steps of (a) reacting an aromatic polyisocyanate with a first polyol component (i.e., castor oil or a castor oil derivative), thereby to obtain a prepolymer having terminal isocyanate groups in the molecule; and (b) reacting the prepolymer with a second polyol component (i.e., castor oil or a castor oil derivative) and a third polyol component which is an amine having at least two hydroxyl groups in the molecule, thereby to cure the prepolymer and thus to prepare the polyurethane resin. The invention relates to another coated granular fertilizer having a film covering fertilizer granules. This film comprises a urethane resin and aqueous-fluid-absorbing particles having a particle diameter of from 1 to 200 &mgr;m. This urethane resin may be the above polyurethane resin. This coated granular fertilizer can be produced by a method comprising the steps of (a) applying an aromatic polyisocyanate, a polyol component (i.e., castor oil or a castor oil derivative), an amine, and the aqueous-fluid-absorbing particles, at the same time or separately in no special order, while the fertilizer granules are kept fluidized or rolled, thereby to form a precursory film on the fertilizer granules; and (b) curing the precursory film into the film. Each coated granular fertilizer is substantially superior in regulation of the release of plant nutrient elements therefrom.

Coated granular fertilizer and method for producing same

The invention relates to a fluorine-containing resin (graft copolymer) used for preparing a paint. This resin is prepared by a graft copolymerization of a fluorine-containing copolymer with a first monomer composition. The fluorine-containing copolymer comprises a first constitutional unit derived from a fluoroolefin and at least one of second and third constitutional units. The second constitutional unit is derived from a particular carboxylic acid vinyl ester represented by a general formula of R--C(.dbd.O)OCH.dbd.CH.sub.2 where R is a special group. The third constitutional unit is derived from a first monomer which is at least one compound selected from vinyl ethers and allyl ethers. The first monomer is represented by a general formula of R--O--(CH.sub.2)n--CH.dbd.CH.sub.2. The first monomer composition for preparing the resin contains a second monomer which is at least one compound selected from methacrylic acid esters and acrylic esters. The second monomer is represented by a general formula of CH.sub.2 .dbd.C(--R')C(.dbd.O)O--R where R' is hydrogen atom or methyl group. A composition prepared by mixing the resin with vinylidene fluoride resin or with a combination of vinylidene fluoride resin and acrylic resin is capable of providing a coated film having high gloss, high weather resistance, and good results in bending test for a long time. Another composition prepared by mixing the resin with a hardener is capable of providing a coated film having high hardness, good adhesion to various other coated films, high weather resistance, and high stain resistance.

Fluorine-containing resin for preparing paint

The invention relates to a curable fluorine-containing copolymer prepared by copolymerizing a monomer mixture. This monomer mixture is in an amount of 100 mol % in total and includes (a) 10-60 mol % of a first polymerizable monomer that is one of hexafluoroisobutene and hexafluoroacetone, each of which has one hexafluoroisopropylidene group; (b) 10-70 mol % of a fatty acid vinyl ester that is represented by a general formula of CH.sub.2 .dbd.CH--OC (.dbd.O) --R.sup.1 where R.sup.1 is one of an alkyl group and --(CH.sub.2).sub.m --R.sup.2 --(CH.sub.2).sub.n --H where R.sup.2 is one of a cycloalkylene group and a divalent aromatic group, and m and n are respectively integers each ranging from 0 to 12, the alkyl group having a carbon atom number of from 1 to 22 and an optional branched chain, each of the cycloalkylene group and the divalent aromatic group having an optional substituent; (c) 1-60 mol % of a second polymerizable monomer that has a cross-linkable functional group and a polymerizable double bond, the cross-linkable functional group being one selected from the group consisting of hydroxyl group, carboxyl group, hydrolyzable organosilyl groups, epoxy groups, .beta.-ketoester groups; and (d) 0-20 mol %, of a third polymerizable monomer that is different from the first and second monomers and the fatty acid vinyl ester and is free of a cross-linkable functional group. A coated film prepared by the application of a varnish containing the fluorine-containing copolymer is superior in water repellency and stain resistance.

Curable fluorine-containing copolymer and coating liquid composition

N-phenyltetrahydrophthalamic acid derivatives, methods of producing

N-acyl-N-phenylmaleamic acid derivatives, methods of producing same, and

N-aryloxyacyl-n-phenyltetrahydrophthalamic acid derivatives, methods of

Growing community of inventors

Saitama, Japan

Yukio Ikeda