Preparation method for polysiloxanes-amidopolyether block copolymer
A technology of siloxane amine-based polyether and block copolymer, applied in textiles, papermaking, fiber processing, etc., can solve the problem of decreased fabric hand, achieve smooth hand, reduce pollution, low color and small effect
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Examples
Embodiment 1
[0041] Preparation of α, ω-hydrogen siloxane intermediates
[0042] Add D 4\579.0g 1,1,3,3-Tetramethyldisiloxane 21.0g, start the stirrer, add 12g of concentrated sulfuric acid, heat up to 50-70°C for 8 hours, slowly add ~22g of baking soda, then add 100g of water, stirred for 15 minutes, poured into a separatory funnel, after standing still, let off the lower aqueous solution, repeated several times until neutral. Then, water and low boilers were distilled off, and the product was a colorless transparent liquid. The measured viscosity is 40-50mPa·S, and the hydrogen content is 0.05%±0.002%.
Embodiment 1-1
[0044] The same device, formula and condition as in Example 1, the catalyst was changed to 12g acid clay, and the acid clay was removed by filtration after the reaction.
Embodiment 2
[0046] Preparation of α, ω-diepoxysiloxane intermediates
[0047] In the same device as in Example 1, add 300.0 g of α, ω-hydrogen siloxane, 20.0 g of allyl glycidyl ether, 5 g of isopropanol, and 190 g of toluene to start stirring, heat up to 75 ° C, add platinum 1, 3-divinyltetramethyldisiloxane chelate toluene solution (Pt content 0.5%) 0.68g, 80 ~ 95 ℃ until 29S i NMR no Si-H detected, then at 120 ℃ and 50mmHg, vacuum distillation Toluene, excess reactants were removed. And determine its epoxy value.
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Application Information
- IPC
- C08G77/46; D06M15/647
- Inventors
- 李炜; 高雏雁