Poly chemical formula

Chemical Designations - Synonyms Bis(2-methoxyethyl)ether Poly-Solv Chemical Formula (CHjOCHjCiyiO. 

Chemical Designations - Synonyms Butoxydiethylene Glycol Butoxydiglycol Diglycol Monobutyl Ether Butyl Carbitol Dowanol DB Poly-Solv DB Chemical Formula C4E,0CHjCH20CHjCHj0H. 

Chemical Designations - Synonyms Carbitol Diethylene Glycol Ethyl Ether Dowanol DE 2-(2-Ethoxyethoxy)ethanol Ethoxy Diglycol Poly-Solv DE Chemical Formula CH3CH2OCH3CH3OCH3CH2OH. 

Chemical Designations - Synonyms Ethoxylated dodecyl alcohol, Ethoxylated lauryl alcohol, Poly(oxyethyl)dodecyl ether, Poly(oxyethyl) lauryl ether, Tergitol Nonionic TMN Chemical Formula CijHu0(CH2CH20) CHi CH OH n=6-10 (average). 

Chemical Designations - Synonyms Ethoxylated pentadecyl alcohol, Poly(oxyethyl) pentadecyl ether, Terrgitol nonionic 45-S-lO Chemical Formula C]3H3i0(CH2CH20) CH2CH20H n=10 (average). Observable Characteristics - Physical State (as normally shipped) Liquid Color Colorless Odor Mild, pleasant. 

Chemical Designations - Synonyms Ethoxylated myristyl alcohol, Ethoxylated tetradecyl alcohol, Poly(oxyethil) myristyl ether, Poly(oxyethil) tetradecyl ether, tergtol Nonionic 45-S-lO Chemical Formula C,41X2,0 (CH2CH20) CH2CH20H n=5 (average). 

Chemical Designations - Synonyms 2-Butoxyethanol Butyl Cellosolve Dovonol EB Glycol Butyl Ether Poly-Solv EB Chemical Formula CH3(CH2)30CH2CH20H. 

Chemical Designations - Synonyms Dovanol EM Glycol Monomethyl Ether 2-Methoxyethanol Methyl Cellosolve Poly-Solv EM Chemical Formula CHjOCH CHjON. 

Fig. 11 Chemical formulas of poly(acryl amide) (PAAm), poly(methyl methacrylate) (PMMA), poly(2-hydroxyethyl methacrylate) (PHEMA), poly(t-butyl acrylate) (PtBA), and poly(acrylic acid) (PAA), and poly(dimethyl aminoethyl methacrylate) (PDMAEMA)...

Incompatible Mixtures. Even at very low levels, many of the poly-ether additives led to incompatible mixtures. These blends were not successfully milled to a smooth sheet under any conditions tried. Instead, a mass of crumbs was obtained. These crumbs could be molded into a coherent mass, but the physical properties were poor. For example, addition of 8.75 parts of polybutene-1 oxide to Masterbatch B for CPVC alone gave a brittle, free-flowing material with these properties notched Izod impact strength, 0.7 lb/in notch, flow rate 452 g/10 min. This is a particularly interesting result, since PBO has the same chemical formula as PTHF but structurally is a substituted ethylene oxide polymer rather than a linear homopolymer. No further studies were made of such blends. 

Gas permeable polymers are based on the polymer poly(meth-acrylic acid) to whose chains are attached some silicone groups, such as tris(trimethylsiloxysilane) [chemical formula CH2CH2CH2 Si(OSi(CH3)3)3]. These make the polymer able to absorb oxygen from the air. 

The most common molecules from which polymers are made are ethylene (chemical formula CH2=CH2) and its derivatives. The key to its polymerisation is the double bond, which opens to form bonds to other ethylenes and the end result is a chain of CH2 groups, -CH2-CH2-CH2-CH2-CH2- which can be millions of carbons long. This is polyethylene. Another common polymer is poly(vinyl chloride) which is made from vinyl chloride (chemical formula CH2=CHCl) and is better known as PVC. See also PPMA and HEMA. The following table lists various common polymers headed by those based on ethylene and its derivatives ... 

At a relative humidity of 80%, the sodium salt of pig-mucosal heparin shows a fiber repeat of 1.65 nm, with a triclinic unit-cell containing one chain. The sodium salt of macromolecular heparin from rat skin, at 78% r.h., showed a repeat of 1.73 nm, and crystallized in an orthorhombic unit-cell. After 24 hours at 84% r.h., the repeat changed to 1.65 nm, the pattern corresponding to that of pig-mucosal heparin. The stereochemistry of the chain in terms of the chain repeat and , i/r maps was discussed. It was suggested that the chemical formula for heparin is poly[(l— 4)-/3-D-GlcpA-(l— 4)- -d-GlcNAcp], and a scheme of 5-epimerization of /3-D-glucuronic acid to a-L-iduronic acid was discussed. 

In many publications the electron density difference is addressed as Ap (r) = p (r) — (p (r))y. Exercise Compute the average electron density (p)y of a sample from pure poly(ethylene terephtha-late) (PET) with a mass density of 1.38 g/cm. The chemical formula of PET is C10H8O4. Because PET is most probably in the semicrystalline state, it makes sense to stress that the computed electron density is a volume average ()y. 

Trofimenko reviewed his work on poly(pyrazolyl)borate chemistry and pyrazole-derived ligands in 197157 and 19 72.58 In the 1972 contribution Tpx ligands were contained as a separate category. In 198659 Trofimenko reported a summary on the coordination chemistry of poly(pyrazolyl)borates. Its review in 19932 covers the 1984-1993 period and contains the systematic abbreviation system that we employed in this book and which could be adapted to most types of substitution on the Tp ligand, greatly facilitating writing chemical formulas for Tpx complexes. Shaver also commented the Tpx... 

For the purpose of illustration, the way in which structural factors of apparently minor importance may be decisive for the existence of high-elasticity may be pointed out. Referring to p. 35, where the chemical formulae of rubber and gutta percha are shown to be different only, in that one is the cis and the other the trans form of poly-isoprene, it may be asked why the first is rubbery elastic at room temperature, while the other only possesses this property after being heated above 60 C. Gutta is crystalline at room temperature and melts at 60° C, proving that at this temperature the micro-Brownian motions of the chain elements become so intense, that the lattice forces are insufficient to keep these parts fixed. 

Polyvinyl chloride (PVC), also called poly(vinyl chloride) and polychloroethylene, is a widely produced synthetic polymer. It is used in pipe construction, for doors, windows, etc. and has the chemical formula (C2H3Cl)n. This polymer can be made softer and more flexible by the addition of plasticizers. In its softer form, the plastic can be used in plumbing and imitation leather. Figure 5 shows a model of polyvinyl chloride [16]. 

Boron nitride [10043-11-5], chemical formula BN, exists as three different poly-morphs alpha-boron nitride (a-BN), a soft and ductile polymorph (p = 2280 kg.m" and m.p. = 2700°C)... 

Figure 13 Chemical formula of General Electric Ultem 1000 thermoplastic poly (ether-imide) 26 with a macromolecular backbone comprising two oxygen bridges and one methylethylidene linking unit between the aromatic rings.

Figure 36 Chemical formulae of fluorinated thermoplastic poly(ether-isoimides) 52 and 54, and poly(ether-imides) 53 and 55 used to prepare heat-resistant, flexible...

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