Saturation branch

Chemical Properties and Reactivity. LLDPE is a saturated branched hydrocarbon. The most reactive parts of LLDPE molecules are the tertiary CH bonds in branches and the double bonds at chain ends. Although LLDPE is nonreactive with both inorganic and organic acids, it can form sulfo-compounds in concentrated solutions of H2SO4 (>70%) at elevated temperatures and can also be nitrated with concentrated HNO. LLDPE is also stable in alkaline and salt solutions. At room temperature, LLDPE resins are not soluble in any known solvent (except for those fractions with the highest branching contents) at temperatures above 80—100°C, however, the resins can be dissolved in various aromatic, aUphatic, and halogenated hydrocarbons such as xylenes, tetralin, decalin, and chlorobenzenes. 

This study is concerned with a single isoparaffinic fraction in the approximate distillation range of kerosene. Isoparaffinic oils are complex mixtures of saturated branched-chain compounds as illustrated by isopentane... 

A saturated branched acyclic hydrocarbon is named by numbering the longest chain from one end to the other, and the positions of the side chains are indicated by the lowest possible numbers. The numbers precede the group, and are separated from them by a hyphen. 

Saturated Branched-Chain Fatty Acids, Prog. Chem. Fats Other Lipids (1963) 7. 

Saturated branched Isopropyl, Isobutyl, sec-Butyl, tert-Butyl. Also use pina-colyl instead of 1,2,2-trimethylpropyl. However, pinacolyl alcohol should preferably be named 3,3-dimethyl-2-butanol. Unsaturated Vinyl, Allyl, Isopropenyl. 

Alkylbenzene Linear alkylb (saturated) Branched alkylb (saturated) Linear alkylb (unsaturated) Alkylphenyl (branched) Polyoxypropylene Polysiloxane Linear dodecyl-benzene n-dodecyl 2-ethyl hexyl Oleyl Nonylphenyl CH3(CH2)5CH(C6H4)(CH2)4CH3a CH3(CH2)10CH2-CH3(CH2)3CH—ch2—(CH2CH3) (c/s-)CH3(CH2)7=CH(CH2)CH2-C9H 9(br inclied isomers)C6H4 — [OCH2CH(CH3)l — (CH3)3Si[OSi(CH3)l OSi(CH3)3 I... 

Saturated straight chain Saturated branched Saturated multi-branched ... 

Yang, Z., Liu, S., Chen, X., Chen, H., Huang, M., Zheng, J. 2000. Induction of apoptotic cell death and in vivo growth inhibition of human cancer cells by a saturated branched-chain fatty acid, 13-methyltetradecanoic acid. Can. Res. 60, 505-509. 

These archael membrane lipids consist of monopolar ether head groups and saturated, branched phytanyl chains which are... 

A binaphthol titanocene catalyst has been proposed by Buchwald and Broene for use in asymmetric hydrogenation of nonfimctionalized trisubstituted olefins [829], These reactions take place undo- H2 pressure at 65°C. Acydic or cyclic olefins lead to saturated, branched alkanes with high chemical yield and enantiose-lectivity (ee 83 - 99%). Unfortunately, in most of the cases, the absolute configuration of the product has not yet been determined. 

As the number of branch points in PE chains increases, PE density decreases. The amount of unsaturations in PE also increases with the decrease in density. For example, an average number of methyl branches per 1000 carbons in LDPE increased from 21 at 0.922 g/cm to 43 at 0.916 g/cml An average number of vinylidene un-saturations/branches per 1000-Da (molecular weight) segments of LDPE increased from 16 at 0.922 g/cm to 35 at 0.912 g/cm [5]. Hence, sensitivity of PE to oxidation increases as its density decreases. LDPE is more vulnerable to oxidation compared to HDPE. On the contrary, LDPE is oxidized rather nniformly compared to HDPE, in which amorphous areas are oxidized faster than crystalline ones. 

Fig. 6 a-c. Biomarkers in a Hickman s Harbour core, a High molecular weight/low molecular weight n-alkanes, b phenolic/saturated+branched fatty acid ratio determined by TMAH thermo chemolysis,c 3,4-dimethoxybenzoic acid methyl ester (DMBA). Pb dates dates were obtained for the top 6 cm of the core. (After [92,106])... 

Fig. 8. Ratio of total saturated + branched fatty acids and total phenolics and 3,4-dim ethoxy-benzoic acid methyl ester content of surface sediments determined by TMAH thermoche-molysis. (After [106])...

Definition Saturated branched chain hydrocarbon found in shark liver oil and other natural oils Empirical C19H40 Formula ... 

Saturated Branched Monoenes Dienes Polyenes Sat. Multibranched ... 

Polyester, saturated n. Any polyester in which the polyester backbone has no double bonds. The class includes low-molecular-weight liquids used as plasticizers and as reactants in forming urethane polymers and linear, high-molecular-weight thermoplastics such as polyethylene terephthalate. Usual reactants for the saturated polyesters are (1) a glycol such as ethylene-, propylene-, diethylene-, dipropylene-, or butylene glycol (2) An acid or anhydride such as adipic, azelaic, or terephthalic acid or phthalic anhydride. Some saturated, branched polyesters are used in high-temperature varnishes and adhesives. 

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