Phthalic acid low molecular weight polyesters and process for preparing the sameNovel low-molecular weight polyesters consisting essentially of chain members of the formula ##STR1## wherein X is at least one member selected from the group consisting of ##STR2## and R is a bifunctional ...
wt. distribution of the sol component of antimony oxide by diluting the antimony oxide sol with a phosphoric acid buffer soln. and analyzing the same with gel permeation chromatography (GPC) using the phosphoric acid buffer soln. as an eluting soln. CONSTITUTION:A calibration curve indicating the...
Phthalic acid has been detected in primary emissions from the manufacturing of plastics and vehicle exhaust. Furthermore, it is one of the oxidation products of PAHs (e.g., naphthalene), and serves as a potential organic marker of SOA29. In conclusion, CHO and CHON compounds contributed the ...
Palm oil-based polyester polyol is synthesized by ring opening reaction on epoxidized palm olein by phthalic acid. The reaction is carried out in a solvent... Khoon,Poh,Ang,... - 《Journal of Applied Polymer Science》 被引量: 18发表: 2013年 Effect of Dicarboxylic Acids on the Performance ...
Molecular Weight AveragesPolydispersity IndexRast MethodSix grades of biopolymers formulated to have oil content of 40% (M), 50% (M), and 60% (M) melon seed oil (MESO) and 40% (C), 50% (C), and 60% (C) cottonseed oil (COSO) respectively, were prepared with phthalic anhydride, ...
Studies on the genetic effects of phthalic acid esters on cells in culture. Mono(2-ethylhexyl) phthalate (MEHP) induced chromosome aberrations in cells of two culture lines, one derived from Chinese hamster ovary cells (CHO) and th... BJ Phillips,ASD Gangolli - 《Environmental Health Perspecti...
12.NARROW MOLEULAR WEIGHT DISTRIBUTION TECHNOLOGY OF ETHOXYLATED FATTY ALCOHOL ETHER聚氧乙烯醚相对分子质量分布窄化技术 13.Effect of molecular weight of poly(amic acid) end-capped with phthalic anhydride on the rate of imidization聚酰胺酸相对分子质量对亚胺化速率的影响 14.Effect of Three Low-Molecular...
Because in the phthalic acid two synaeresis glycerine ester epoxy resin molecular structure includes the benzene ring, the molecular mass is small, besides has the epoxy resin general characteristic, but also has the viscosity low, response activeness moderate, the cementation strength high, the com...
Among thousands of compounds that being able to be taken as plasticizers, there are only less than 100 kinds that subjecting to wide application. Phthalic acid esters plasticizers (such as dibutyl phthalate, dioctyl phthalate) are used in the largest amount. The advantages and disadvantages of ...
However, up-to-now there is no report focusing on the effect of molecular weight on the lithography quality of PAE and PSPI. In this work, a series of PAEs with evenly distributed in molecular weights ranging from 9 000–20 000 g/mol were carefully synthesized. Phthalic anhydride has been...