Pressure-sensitive adhesive layer-forming polyorganosiloxane composition and use thereof
A technology of polyorganosiloxane and adhesive layer, which can be applied in other household appliances, pressure-sensitive film/sheet, polymer adhesive additives, etc., can solve problems such as inability to fully solve technical problems, and achieve performance improvement and industrialization easy effect
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[0071] The preparation method of the polyorganosiloxane composition of the present invention is not particularly limited, and is carried out by uniformly mixing the respective components. A solvent may be added as needed, and it may be prepared by mixing at a temperature of 0 to 200°C using a known stirrer or kneader.
[0072] The organopolysiloxane composition of the present invention is applied on a substrate to form a coating film, and heated at a temperature of 80 to 200°C, preferably at a temperature of 90 to 190°C, thereby producing a cured product. . As the coating method, gravure coating (gravure coat), offset coating (offset coat), indirect gravure (offset gravure), roll coating, reverse roll coating, air knife coating, curtain coating and comma knife coating can be exemplified cloth. The amount of application can be designed with a desired thickness according to the application such as a display device. As an example, the thickness of the pressure-sensitive adhesiv...
Embodiment 1
[0125] 36.4 parts by weight of vinyl functional polydimethylsiloxane of component a2, 99.4 parts by weight of MQ silicone resin of component b, 30.9 parts by weight of toluene, 0.298 parts by weight of methylhydrogen polysiloxane of component c, and 0.491 parts by weight of a 20% solution of curing retarder e1 was well mixed at room temperature, and 0.355 parts by weight of a platinum-based hydrosilylation reaction catalyst of component d was added to the mixture as a curing reactive polyorganosiloxane composition. The molar ratio (SiH / Vi ratio) of SiH groups in component c to the amount of alkenyl groups in component a2 was 5.40, and the content relative to the solid content of platinum metal was 22 ppm.
[0126] The composition was cured by the method described above, and the adhesive force, viscoelasticity, and stress-strain to the PMMA plate were measured by the method described above, and the evaluation results are shown in Table 2.
Embodiment 2
[0128] 34.5 parts by weight of vinyl functional polydimethylsiloxane of component a2, 102.4 parts by weight of MQ silicone resin of component b, 85.3 parts by weight of toluene, 0.283 parts by weight of methylhydrogen polysiloxane of component c, and 0.491 parts by weight of a 20% solution of curing retarder e1 was well mixed at room temperature, and 0.355 parts by weight of a platinum-based hydrosilylation reaction catalyst of component d was added to the mixture as a curing reactive polyorganosiloxane composition. The molar ratio (SiH / Vi ratio) of SiH groups in component c to the amount of alkenyl groups in component a2 was 5.40, and the content relative to the solid content of platinum metal was 22 ppm.
[0129] The composition was cured by the method described above, and the adhesive force, viscoelasticity, and stress-strain to the PMMA plate were measured by the method described above, and the evaluation results are shown in Table 2.
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Abstract
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