In this website: https://patents.google.com/patent/CN108424746A/en
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- Title ("Silicone pressure sensitive adhesive and method of preparation") - paste in A1
- Priority date ("2018-03-13") - paste in A2
- Abstract ("The present invention discloses a kind of silicone pressure sensitive adhesive and its preparation method; phenyl silicone resin and a fluorine-containing silicone rubber (rubber 107) as starting material, prepared by polycondensation reaction silicone pressure sensitive adhesive. Since the structure of the product introduced in the amount of fluorine-containing phenyl group, to give an excellent high temperature performance pressure-sensitive adhesive and adhesive properties, and has a simple preparation process, low equipment requirements, is suitable for industrial production enlarged advantages.") - paste in A3
- Claim 1 ("1. A silicone pressure sensitive adhesive, wherein the chemical structure of the silicone pressure sensitive adhesive as follows:
- Claim 2. The method for preparing a silicone pressure sensitive adhesive of claim 1, further comprising the steps of: (1) The activator solution was added dropwise a mixture of 107 with the catalyst in the gum solution, followed by addition of a fluorinated phenyl silicone resin solution, refluxing the reaction to give the polycondensation product; (2) the condensation product with curing agent after mixing the organic solvent, heat aging, resulting silicone pressure sensitive adhesive; chemical structural formula of the silicone resin is a fluorinated phenyl:
- Claim 3. The method of preparing the silicone pressure sensitive adhesive according to 2 claim, wherein the activator, 107 peptization, a catalyst, a fluorinated phenyl silicone resin mass ratio (0.005~0.05): 1: (0.005~0.06): (1~10); the polycondensation product with a mass ratio of the curing agent (square 02~0.5.): (0.02~0.3).
- Claim 4. The method of preparing the silicone pressure sensitive adhesive according to 2 claim, wherein the solvent is an activator solution aromatic hydrocarbon solvent; 107 gum solution as solvent aromatic hydrocarbon solvent; containing-fluorophenyl silicone-based solvent is an aromatic hydrocarbon solution of solvent; the organic solvent is isopropanol; the curing agent is bis (trimethylsilyl) amine; the catalyst is dibutyl tin dilaurate; the activator is two methyl dimethoxysilane or dimethyl diethoxysilane.
- Claim 5. The method of preparing the silicone pressure sensitive adhesive according to 2 claim, wherein the step (1), at 80 ° C~100 ° C, the catalyst is added to the gum solution in 107; then, under nitrogen atmosphere, activator solution was added dropwise, after the addition was complete the reaction was kept 1~6 hours; followed by addition of a fluorinated phenyl silicone resin solution, on refluxing the reaction 100~140 ° C 2~60h, to give the polycondensation product; ⑵ step and incubated curing temperature of 100~140 ° C, time is 1~6 hours.
- Claim 6. A method for preparing a silicone pressure sensitive adhesive 5 according to claim, characterized in that the activator solution is added dropwise to 0.5~3 hours.
- Claim 7. A method of preparing a silicone pressure sensitive adhesive according to 2 claim, wherein the fluorine-containing phenyl silicone resin preparation comprising the steps of: (1) the pentafluorostyrene was dissolved in aromatic hydrocarbon solvent was added under the nitrogen atmosphere noble metal salt catalyst; methyldichlorosilane was then added dropwise at 50 ~140 ° C; reaction was incubated 1~10 hours after the completion of the dropwise addition, ethyl dimethyl chlorosilane prepared pentafluorophenyl burning; (2) water, inorganic acids dispersed in an organic solvent, a mixture of ethyl pentafluorophenyl dimethylchlorosilane and TEOS was then added dropwise at 60~80 ° C, once addition was complete after incubation polycondensation 0.5~1 hours; trihydrocarbyl a mixture of chlorosilanes TEOS is then added dropwise, warmed to polycondensation reaction 1~6 hours to prepare a fluorine-containing resin baby phenyl after completion of dropping again.
- Claim 8. A method for preparing a silicone pressure sensitive adhesive 7 according to claim, characterized in that, pentafluorostyrene, noble metal salt, methyldichlorosilane mass ratio of 1: (0.003~0.006): (0.5~2 ); a mixture of methylchlorosilanes and TEOS diethyl pentafluorophenyl, the mass pentafluorophenyl ethyl dimethyl chlorosilane and TEOS ratio (1~6): (1 ~ 10); a mixture of chlorosilanes trihydrocarbyl TEOS, the mass of a trihydrocarbyl chlorosilanes TEOS ratio of (1 ~ 3): (1~10); said noble metal salt chloroplatinic acid; a trihydrocarbyl the chlorosilane trimethyl chlorosilane, dimethyl chlorosilane a hydrogen group, a dimethyl vinyl chlorosilane, a phenyl dimethyl chlorosilane of one; the inorganic acid is concentrated sulfuric acid or concentrated hydrochloric acid.
- Claim 9. A method for preparing a silicone pressure sensitive adhesive 7 according to claim, characterized in that the time of dropwise addition of methyldichlorosilane was 0.5~5 hours; hydrocarbon added dropwise a chlorosilane TEOS time of the mixture is 0.5~1 hours; step (1) after completion of the reaction, the reaction solution was distilled off through distillation under reduced pressure to give ethyl pentafluorophenyl dimethylchlorosilane; step (2) after completion of the polycondensation reaction again, the reaction solution after cooling, distillation under reduced pressure, partitioned and extracted, washed with distilled water, dried, filtered and distilled to give a fluorine-containing phenyl silicone resin.
- Claim 10. Application of a fluorinated phenyl silicone resin in the preparation of silicone pressure sensitive adhesive; a phenyl group of formula the fluorinated silicone resin is: The chemical structural formula of silicone pressure sensitive adhesive as follows:") paste in A4
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