Coating composition, cured film, laminate, and tire
A technology of composition and cured film, applied in the direction of coatings, tire parts, chemical instruments and methods, etc., to achieve the effect of excellent bending fatigue resistance and excellent adhesion
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[0150]
[0151] The coating composition of the present invention can be prepared by mixing at least components A to C, and can be prepared by dissolving or dispersing in a solvent, preferably water, as necessary. For spraying the coating composition of the present invention, it is preferable to add an organic solvent such as acetone, MEK, and toluene to control the viscosity so as to provide an appropriate viscosity.
[0152] The preparation method of the coating composition of the present invention is not particularly limited, and the composition may preferably be prepared in the following manner.
[0153] In the case where the coating composition of the present invention is an aqueous composition, Component A is dispersed in Component B to provide a dispersion, which is then added dropwise to water containing a surfactant, followed by stirring, so that the components A and component B are dispersed in water in a mixed state. A water-dispersible radical generating agent is...
Embodiment 1 to 11 and comparative example 1 and 2
[0237] Components A to C shown in Table 1, to which acetone was added in an amount approximately 3 times that of component A for viscosity control, were stirred and sprayed on the substrate with an air brush.
Embodiment 12 and comparative example 3
[0239] According to the formulation shown in Table 1, to a mixture of 300 parts of polyurethane and mercaptan in total and 150 parts of MEK at 60 to 70° C., 15 parts of Emulgen 104P to which 15 parts were previously added was added under stirring. 750 parts of ion-exchanged water, and after dispersing at 30 to 40° C. for 30 minutes, the solvent (MEK) was removed to provide a water-based polyurethane resin composition.
[0240] [Manufacture of cured film]
[0241]The coating composition was sprayed on the substrate to form a dry thickness shown in Table 1, and a film was formed under the conditions shown in the column of film forming conditions. The obtained composite of the base material and the cured film was evaluated for bending fatigue resistance, scratch resistance test, Eb and M25. The results are shown in Table 1 below.
[0242] The base material used was a vulcanized rubber obtained by vulcanizing the composition shown in Table 2 at 160° C. for 15 minutes.
[0243] ...
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Abstract
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