Pressure-sensitive adhesive layer-forming polyorganosiloxane composition and use thereof
A polyorganosiloxane, adhesive layer technology, applied in other household appliances, pressure-sensitive films/sheets, applications, etc., can solve problems such as inability to fully solve technical problems, and achieve improved performance, easy industrialization, and high stress. Effect
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[0079] 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.
[0080] 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 1～7、 comparative example 1～5
[0131] The compositions of the following Examples 1 to 7 and Comparative Examples 1 to 5 were cured by the above-mentioned method, and the adhesive force, viscoelasticity, and stress-strain with respect to the PMMA plate were measured by the method shown above, and the evaluation results were etc. are shown in Table 2.
Embodiment 1
[0133] 32.3 parts by weight of vinyl functional polydimethylsiloxane of component a1, 100.8 parts by weight of MQ silicone resin of component b1, 4.3 parts by weight of MQ silicone resin of component b2, 84.9 parts by weight of toluene, and methyl alcohol of component c2 0.287 parts by weight of hydropolysiloxane, 0.409 parts by weight of 20% solution of curing retarder of component e are fully mixed at room temperature, and 0.355 parts by weight of platinum-based hydrosilylation reaction catalyst of component d are added to the mixture to form a curing reaction non-toxic polyorganosiloxane composition. The molar ratio (SiH / Vi ratio) of the amount of SiH groups in component c2 to the amount of alkenyl groups in component a1 was 29.2, and the content relative to the solid content of platinum metal was 22 ppm.
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