Study on the synthesis of polyester type waterborne polyurethane and modifying by nano-sized particles was written by Chen, Yi;Liu, Wenyong;Zeng, Guangsheng;Li, Xiang Gang;Gu, Ling. And the article was included in Applied Mechanics and Materials in 2012.Quality Control of 2-Butyl-2-ethylpropane-1,3-diol The following contents are mentioned in the article:
The waterborne polyurethane was prepared by reaction between polyester polyol and isophorone diisocyanate, different nanoparticles were filled into the system for modification. The effect of different ratio of materials, the kinds and mass of nanoparticles on the characters of waterborne polyurethane latex and film were investigated. The results showed that the stable polyurethane latex and polyurethane film with perfect characters could be prepared when the ratio of NNCO/NOH was 2.5∼3.0, the DMPA with a mass fraction of 5%∼6% was added into reaction as a macromol. extender after adding small mol. chain extender BPO. Filling nanoparticles into the polyurethane latex could improve the water resistance and mech. characters of the film. Nano-sized SiO2 was a better modifier than TiO2, and the appropriate mass fraction of SiO2 was 6% of polyurethane raw materials. This study involved multiple reactions and reactants, such as 2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4Quality Control of 2-Butyl-2-ethylpropane-1,3-diol).
2-Butyl-2-ethylpropane-1,3-diol (cas: 115-84-4) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Quality Control of 2-Butyl-2-ethylpropane-1,3-diol
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts