Functional polysiloxanes
A technology of polysiloxane and polysiloxane, applied in the field of new functional polysiloxane, which can solve the problems of poor anchoring performance
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[0494] In the following, preferred embodiments of the present invention are summarized.
[0495] 1. Functional polyorganosiloxane comprising at least one SiH group, at least one diorganosiloxy group excluding anhydride groups, and at least one organic The siloxy group of the group, the organic group includes at least one anhydride group.
[0496] 2. The functional polyorganosiloxane according to the previous embodiment, wherein the polyorganosiloxane is a linear polyorganosiloxane.
[0497] 3. The functional polyorganosiloxane according to any one of the preceding embodiments, wherein the polyorganosiloxane is a polyorganosiloxane having at least one terminal organic group comprising an anhydride group and / or at least one Linear polyorganosiloxane with pendant organic groups.
[0498] 4. The functional polyorganosiloxane according to any one of the preceding embodiments, wherein the polysiloxane has a polyorganosiloxane as determined by GPC using polystyrene standards in the...
Embodiment 1
[0661] Example 1: H MD 15 D. H 30 m H
[0662] To a four-neck round bottom flask equipped with mechanical stirring, a thermowell, and a reflux condenser connected to a nitrogen bubbler was added octamethylcyclotetrasiloxane (D 4 , 556.14g, 1.875mol), tetramethyldisiloxane (TMDSO, 67.17g, 0.5mol) and tetramethylcyclotetrasiloxane (D 4 H , 901.91g, 3.75mol). Inertize the flask (N 2 ). Trifluoromethanesulfonic acid (TfOH, 0.44 mL, 0.005 mol) was added via Teflon syringe and the reaction mixture was heated to 70°C and stirred for 4.5 hours.
[0663] The reaction mixture was allowed to cool to 45 °C. While stirring, NaHCO 3 (25.6 g, 0.305 mol) and water (3.05 mL, 0.169 mol) was added in portions, and the mixture was stirred at 70°C for 1.5 hours. Contact an aliquot with a small amount of water and check that the pH is between 6.5 and 7.5.
[0664] The reaction mixture was cooled to room temperature, salts were removed by filtration, and the product was devolatilized at...
Embodiment 2
[0665] Example 2: H MD 25 D. H 27 m H
[0666] To a four-neck round bottom flask equipped with mechanical stirring, a thermowell, and a reflux condenser connected to a nitrogen bubbler was added octamethylcyclotetrasiloxane (D4 , 741.53g, 2.5mol), tetramethyldisiloxane (TMDSO, 53.73g, 0.4mol), and tetramethylcyclotetrasiloxane (D H 4 , 649.38g, 2.7mol). Inertize the flask (N 2 ). Trifluoromethanesulfonic acid (TfOH, 0.35 mL, 0.004 mol) was added via a Teflon syringe and the reaction mixture was heated to 70°C and stirred for 4.5 hours.
[0667] The reaction mixture was allowed to cool to 45 °C. While stirring, NaHCO 3 (20.5 g, 0.244 mol) and water (2.44 mL, 0.135 mol) was added in portions, and the mixture was stirred at 70°C for 1.5 hours. Contact the sample with a small amount of water and check that the pH is between 6.5 and 7.5.
[0668] The reaction mixture was cooled to room temperature, salts were removed by filtration and the product was devolatilized at 15...
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