Dispersible ionomer powder and method of making same
A technology of ionomers and agglomerates, which is applied in the field of dispersible ionomer powders, can solve the problems of low concentration, compatible deployment technology, low corresponding viscosity, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example 1
[0196] Preparation Example 1 --- SO 2 F forms of TFE-VEFS polymer latex manufacturing
[0197] The following reagents were loaded in the 22L autoclave:
[0198] -9.3L decentralized water;
[0199] -700g of monomers having the formula: CF 2 = CF-O-CF 2 CF 2 -So 2 F (vefs);
[0200] -650G 5WT% CLF 2 O (CF 2 CF (CF 3 ) O) n (CF 2 O) m CF 2 COOK aqueous solution (average molecular weight = 521, N / m ratio = 10).
[0201] The autoclave stirred at 470 rpm was heated at 66 ° C. The aqueous solution of potassium sulfate having 9 g / L was added at an amount of 170 ml. The pressure is maintained at a value of 14.4 bar (absolute value) by feed tetrafluoroethylene (TFE). During polymerization, the aliquot of 100 g of VEFS was added to the reactor. After 240 minutes, the autoclave was cooled by interrupting and the reaction was stopped and the reactant was lowered by discharging TFE; the total mass of TFE in the reactor was 3200 g.
[0202] The solids content of the precursor latex thus obt...
preparation example 2
[0204] Preparation of Example 2-TFE-VEFS water-based dispersion
[0205] The precursor latex condensation of Example 1 was prepared by freezing and thawing, and the recovered powder was filled with water and then dried at 80 ° C for 48 hours.
[0206] First, a portion of the precursor ionomer powder (100 g) thus obtained is treated with a portion of the precursor ionomer (100 g) obtained by 14 wt% of potassium hydroxide, 30 wt% dimethyl sulfoxide and 56 wt% deprivation water. 8 hours. After washing several times with dehydrated water, the solid polymer thus recovered was acidified with 1 L of 20 wt% nitric acid solution for 2 hours at room temperature. The powder thus obtained was once again washed with a dehydrated water and finally dried in a vent at 80 ° C for 8 hours.
[0207]Confirmation through FT-IR analysis-SO 2 F-to-SO 3 The quantitative transformation of the H functional group.
[0208] This hydrolyzate powder (60 g) was mixed with dehydry water (160 g) in a 250 ml tita...
preparation example 3
[0209] Preparation Example 3 - Provision of hydrolysis and ionomer latex of TFE-VEFS precursors
[0210] Preparation of precursor latexes prepared in Preparation Example 1 and 73.5 g of NaOH / h 2 O 2 wt% solution is contacted for 5 days at room temperature and then with 73.5 g of NaOH / h 2 O 20 wt% solution is in contact with two days at room temperature.
[0211] Evaluate the original -so by solid nuclear magnetic resonance (NMR) 2 F group to -so 3 Transformation of NA.
[0212] The mixture was then treated in a purified column in which the Lewatit Monoplus Monoplus Monoplus Monoplus M800 OH anion exchange resin was followed, followed by the final treatment in a column in which the Lewatit Monoplus S 108h cation exchange column is a fixed phase. Determination of ionization-SO by ICP-OES analysis 3 NA group is completely transformed into -so 3 H.
[0213] So recycling - SO 3 The purified ionomer latex in H was 15% wt of the solid content of 15%. It is found that the particle si...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More