A kind of foam stabilizer that can be used in all water foaming system
A foam stabilizer, all-water foaming technology, used in the field of foam stabilizers
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[0033] Preferably, the preparation method of the low-hydrogen silicone oil comprises the steps of:
[0034] React octamethylcyclotetrasiloxane, hexamethyldisiloxane and high hydrogen-containing silicone oil under the action of an acidic catalyst at 30-80°C for 4-12 hours to obtain a hydrogen content of 0.05-0.8%. Low hydrogen silicone oil.
[0035] The mass of the acidic catalyst is 0.5%-6% of the mass sum of octamethylcyclotetrasiloxane, hexamethyldisiloxane and high hydrogen-containing silicone oil, and a strong acid resin or acid clay is used.
[0036] In some embodiments, the preparation method of the modified polyether grafted silicone surfactant comprises the following steps:
[0037] 1) Add low-hydrogen silicone oil, unsaturated polyether, dispersant and complex metal catalyst into the reaction kettle, and react for 2-8 hours at a reaction temperature of 80-120°C under normal pressure to obtain an intermediate product;
[0038] 2) The intermediate product in step 1) i...
Embodiment 1
[0068] Example 1 Provided is a foam stabilizer that can be used in all-water foaming systems, the foam stabilizer is a modified polyether grafted silicone surfactant; the preparation method of the modified polyether grafted silicone surfactant Including the following steps:
[0069] 1) Add 50g of low-hydrogen-containing silicone oil, 95g of unsaturated polyether, 20g of diethylene glycol and 5mg of platinum-rhodium complex solution into a reaction kettle, and react for 4 hours at a reaction temperature of 110°C under normal pressure to obtain an intermediate product;
[0070] 2) Sulfonate the intermediate product in step 1): Dissolve potassium bisulfite and the intermediate product in a mixed solution of isopropanol and water, and react at 80° C. for 4 hours, then depressurize Distill out the mixed solvent, that is, too.
[0071] The unsaturated polyether is the allyl alcohol polyether HMS-229R (the hydroxyl value is about 130) of Zhejiang Huangma Chemical Co., Ltd.; the vol...
Embodiment 2
[0079] Example 2 Provided is a foam stabilizer that can be used in all-water foaming systems, the foam stabilizer is a modified polyether grafted silicone surfactant; the preparation method of the modified polyether grafted silicone surfactant Including the following steps:
[0080] 1) Add 50g of low-hydrogen silicone oil, 181g of unsaturated polyether, 35g of diethylene glycol and 16.5mg of platinum-rhodium complex into a reaction kettle, and react for 3 hours at a reaction temperature of 120°C under normal pressure to obtain an intermediate product;
[0081] 2) Phosphorylation of the intermediate product in step 1): adding the intermediate product and phosphoric acid into the reactor, then adding 50 wt% of the total monomer mass toluene for dissolution, and under the condition of nitrogen gas , 90 ° C reaction for 5 hours, and then the crude product at 80 ° C, 0.08MPa under reduced pressure distillation purification that is.
[0082] The unsaturated polyether is allyl pol...
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Abstract
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