Polyvinyl-Alcohol-Stabilized Redispersible Powders With Plasticized Properties
a technology of polyvinylalcohol and redispersible powder, which is applied in the direction of special tyres, vehicle components, tire parts, etc., can solve the problem of reducing the fluidity of the modification of construction compositions such as mortar or concrete with redispersible powder, and achieve the effect of improving the fluidity of construction compounds
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example 3
[0035] 23 parts by weight of a redispersible powder prepared by spraying an aqueous polymer dispersion based on a vinyl acetate / ethylene copolymer having a Tg of 17° C., stabilized with 8% by weight of partially hydrolyzed polyvinyl alcohol, and containing 5% by weight of partially hydrolyzed polyvinyl alcohol, and with 7.4% by weight of plasticizer A (copolymer of 22% by weight methacrylic acid, 49% by weight ethyl acrylate, 7% by weight methyl methacrylate, and 22% by weight sulfopropyl acrylate), were tested in the above formulation. The results are summarized in Table 2.
example 4
[0036] Example 3 was followed, but instead of co-spraying with 7.4% by weight of plasticizer A, 6.7% by weight of plasticizer B (copolymer of 27% by weight methacrylic acid, 49% by weight ethyl acrylate, 7% by weight methyl methacrylate, 17% by weight sulfopropyl acrylate) was used. The results are summarized in Table 2.
example 5
[0037] Example 3 was followed, but instead of co-spraying with 7.4% by weight of plasticizer A, 10% by weight of plasticizer A was used. The results are summarized in table 2.
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