Patent ID: 6780928
Filing Date: 2004-08-24
Classification: C08F,C08G,C08L

Abstract:
A homopolymer which is obtained by polymerization of a polymerizable polyoxyalkylene monoalkyl ether derivative represented by formula [3]R1O(AO)nR3â€ƒâ€ƒ[3]wherein R1 represents a hydrocarbon group having 1 to 18 carbon atoms. R3 represents acryloyl group or methacryloyl group, AO represents an oxyalkylene group having 2 to 4 carbon atoms, n represents an average number of addition of the oxyalkylene group which is 5 to 500, a plurality of AO may represent the same type of oxyalkylene group or different types of oxyalkylene groups and, when the plurality of AO represent different types of oxyalkylene groups, the different types of oxyalkylene groups may be arranged randomly or in blocks, and has a molecular weight of 1,000 to 300,000, said polyoxyalkylene monoalkyl ether derivative being obtained by using a polyoxyalkylene monoalkyl ether represented by formula [1]:R1O(AO)nHâ€ƒâ€ƒ[1]wherein R1 and AO and n are as defined above,wherein a chromatogram of the polyoxyalkylene monoalkyl ether obtained in accordance with gel permeation chromatography which exhibits a relation between an intensity of a refractive index obtained by a differential refractometer and an elution time satisfies a relation expressed by equation (A): S1/S0&lE;0.15â€ƒâ€ƒ(A) â€ƒwherein S1 represents an area under a portion of the chromatogram from start of elution to an earliest elution time when the intensity of a refractive index has a value of L/3, L representing a shortest distance between a greatest maximum point of the intensity of a refractive index and a base line, and S0 represents an area under a portion of the chromatogram from start of elution time when the intensity of a refractive index has the greatest maximum value.