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ChemicalBook--->CAS DataBase List--->933674-93-2

933674-93-2

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933674-93-2 Structure

933674-93-2 Structure
IdentificationBack Directory
[Name]

2-METHYL-5-TRIFLUOROMETHOXY-PHENYLAMINE
[CAS]

933674-93-2
[Molecular Formula]

C8H8F3NO
[MDL Number]

MFCD07777196
[MOL File]

933674-93-2.mol
[Molecular Weight]

191.15
Safety DataBack Directory
[Symbol(GHS) ]


GHS05
[Signal word ]

Danger
[Hazard statements ]

H314-H290
[Precautionary statements ]

P501-P234-P264-P280-P390-P303+P361+P353-P301+P330+P331-P363-P304+P340+P310-P305+P351+P338+P310-P406-P405
[Safety Statements ]

26-36/37/39
[Risk Statements ]

胶凝剂的分子结构设计应考虑具有较好的抗温抗盐性能，胶凝剂的分子结构设计具体依据以下六个方面：
⑴ 在分子链上引入可增加刚性的结构，选用碳链高分子和在分子中引入可增加分子链刚性的环状结构，可使聚合物的热稳定性明显提高；
⑵ 在分子上引入大侧基或刚性侧基，可使聚合物具有较高的热稳定性。因刚性侧基的位阻效应，分子运动阻力大，聚合物溶液的表观粘度降低幅度较小；
⑶ 聚合物引入可抑制酰胺基水解的单体，可以抵消因分子链上酰胺基的水解抗温耐盐性能降低的缺点，可使聚合物的抗温耐盐性能大幅度提高；
⑷ 疏水基团的水溶性聚合物具有盐增粘效应，因此，在聚合物合成中引入疏水基团是改善聚合物耐温抗盐性的有效途径；
⑸ 聚合物中最好引入含有耐水解基团，来增加产物的耐盐性能。改性的丙烯酰胺类胶凝剂比较合适，因此采用耐水解的单体与 AM 等单体共聚可以获得耐温抗盐性能优良的水溶性聚合物；
⑹ 还可以在分子中引入对盐不敏感的基团来提高分子的耐盐性[3]。
　　
图1 胶凝剂分子结构设计原理与方法
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