Hygroscopic polymer and raw material obtained by containing the polymer
A technology of raw materials and polymers, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as white appearance and shape changes, and achieve excellent hygroscopic performance and excellent water resistance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0094] Add a monomer mixture consisting of 74 parts of acrylonitrile, 1 part of vinyl acetate, and 25 parts of divinylbenzene to 300 parts of an aqueous solution containing 0.5 parts of ammonium persulfate, and then add 0.6 parts of sodium metabisulfite. Polymerization was carried out at 65°C for 2 hours in a tank. The resulting polymer was filtered and washed with water. Next, 100 parts of this polymer was added to 567 parts of 10% sodium hydroxide aqueous solution, and the hydrolysis reaction was performed at 95 degreeC for 48 hours. Next, the obtained polymer was filtered and washed with water to obtain hygroscopic fine particles 1 . The evaluation results of the pellets are shown in Table 1, and the water resistance was good. Moreover, when the hygroscopicity expression rate was measured about the sample used for water resistance evaluation, it was 90.7% or more.
[0095] In addition, the hygroscopic microparticles 1 were pulverized to have an average particle diameter ...
Embodiment 2
[0099] In Example 1, as a monomer mixed solution, a monomer mixed solution composed of 64 parts of acrylonitrile, 1 part of vinyl acetate, and 35 parts of divinylbenzene was used, except that it was performed in the same manner as in Example 1 to obtain a hygroscopic Sexual particles3. The evaluation results of the pellets are shown in Table 1, and the water resistance was good.
Embodiment 3
[0103] In Example 1, as a monomer mixed solution, a monomer mixed solution composed of 56.7 parts of acrylonitrile, 8.3 parts of vinyl acetate, and 35 parts of divinylbenzene was used, except that the same operation as in Example 1 was used to obtain a hygroscopic Sexual particles5. The evaluation results of the pellets are shown in Table 1, and the water resistance was good.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| water absorption | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More