Abstract: An emulsion polymerization is carried out using one or more polymerizable unsaturated monomers X having at least one carbon-carbon double bond in a molecule, one or more reactive emulsifiers Y having at least one polymerizable group in a molecule, and one or more polyfunctional monomers Z1 having two or more polymerizable unsaturated groups in a molecule and having a molecular weight per functional group of less than 150, or one or more hydrophilic monomers Z2 having one polymerizable unsaturated group and a hydrophilic group in a molecule and having an average molecular weight of less than 250, with a proportion of the total mass of the polyfunctional monomer Z1 or hydrophilic monomer Z2 to the total mass of the reactive emulsifier Y being in the range of Z1/Y=1/3 to 1/30 or Z2/Y=1/1 to 1/30.

Abstract: A reactive emulsifier comprising a compound of formula (I), which makes polymerization stability satisfactory and is capable of improving the water resistance etc. of the polymer film to be obtained. In the formula (I), D represents a polymerizable unsaturated group represented by the chemical formula D-1 or D-2; m1 represents a number of 1 or larger; R1 represents an alkyl group having 1 to 12 carbon atoms; m2 represents a number of 0 to 4; and the sum of m1 and m2 is 1 to 5. R2 represents a hydrocarbon group having 6 to 30 carbon atoms; A represents either an alkylene group or a substituted alkylene group which has 2 to 4 carbon atoms; and n is in the range of 0 to 1,000. X represents a hydrogen atom or an anionic hydrophilic group which is —(CH2)a—SO3M etc. R3 represents a hydrogen atom or methyl.

Abstract: As a manufacturing method of a stable coumarone-indene resin water-dispersed composition which does not use an organic solvent, can be applied to various resin compositions, enhance sticky and adhesive properties, water resistance, heat resistance, and compatibility, and achieve consideration of health and safety of operators, arrangement of a work environment, and cost reduction relating to exhaust gas treatment, a manufacturing method which includes a process of dispersing a coumarone-indene resin which contains 50% by weight or more of coumarone and indene in total as monomer-constituents and is in a solid form at an ordinary temperature in the presence of a surfactant by a wet milling and dispersing method is used.