alkyl group

The deposition problem of the short alkyl group substituted viologens was resolved either by designing such derivatives of viologens which were water soluble in all their oxidation states [8] or by the use of cyclodextrins (CDs) [9, 10].

Siliconate treatments depend more on network formation than do silanes because the alkyl group is normally a methyl (single carbon) and this does not lower the surface energy as much as higher alkyl groups used on alkoxysilanes.

c] of composites produced using functional-ized MWCNTs decrease with the increase in alkyl group carbon chain length.

1 to 20 weight percent silane comonomer of a formula where R is a C1-4 alkyl group incorporated by copolymerization or grafting.

The Waterloo group demonstrated that a carefully designed alkyl group can be transferred specifically in the presence of the butyl groups on tin, and with no loss of stereochemistry.

and combinations thereof and an electrodepositable binder, the binder is comprised of resin(s) comprised of a phosphorous-containing group in which X is a hydrogen, a monovalent hydrocarbon or an oxygen atom having a single covalent bond to the phosphorous atom, and each oxygen atom has a covalent bond to a hydrogen atom, an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, or the resin or one of the resins, with the caveat that at least one oxygen atom has a covalent bond to the resin or one of the resins; a carboxylate group separated by from 2-4 carbons from an ester group; and a tridentate amine ligand.

The key structural variables of these ingredients include molecular weight of the polymer, degree of ethoxylation, degree of alkylation and alkyl group size.

The antistatic coating film features a polymer with a polymerized unit represented by the following formula (1): wherein R1 and R2 each independently represent a hydrogen atom or a methyl group, R3 represents an alkylene group having 2 to 10 carbon atoms, R4 and R5 each independently represent an alkyl group having 1 to 5 carbon atoms, R6 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group having 2 to 10 carbon atoms, and Y-represents a halogen ion, a halogenated alkyl ion, a nitrate ion, a sulfate ion, an alkyl sulfate ion, a sulfonate ion or an alkyl sulfonate ion.

However, with R = tert-butyl, a straight chain alkyl group is preferred in the C-terminus position.

Key statement: A rubber composition for tires contains a diene rubber, silica, a sulfur-containing silane coupling agent and a triethoxysilane containing an alkyl group having a prescribed number of car bon atoms, wherein 50 mass % or more of the aforementioned diene rubber is a styrene-butadiene copolymer rubber, the aforementioned sulfur-containing silane coupling agent has a mercapto group, the content of the aforementioned silica is from 5 to 150 parts by mass per 100 parts by mass of the aforementioned diene rubber, the content of the aforementioned sulfur-containing silane coupling agent is from 3 to 15 mass % relative to the content of the aforementioned silica, and the content of the aforementioned alkyltriethoxysilane is from 0.

The electron donating nature of bigger pendant alkyl group and the distribution of electron in polymer chain can also be inferred from the spectra.

has been granted a patent for a multilayer coating in which a plurality of photocurable resin cured films are layered, wherein at least two adjacent layers comprise the same hindered phenol antioxidant in different amounts, and wherein the antioxidant has at least one hindered phenol group, the hindered phenol group containing none or only one sterically hindered alkyl group selected from the group consisting of an i-propyl group, an i-butyl group, and a tert-butyl group and wherein the adjacent layers comprise urethane meth(acrylate), wherein the multilayer coating further is comprised of an amine compound; wherein the amine compound is present in the multilayer coating to prevent the generation of hydrogen gas.

It is comprised of approximately 68% of an alkyl ethoxy sulfate surfactant wherein the alkyl group has an average of 12-16 carbon atoms and the degree of ethoxylation is at least 3; from about 2-7% of a betaine surfactant; from about 2-7% of a hydroxysultaine surfactant; from about 0.

The first monomer unit has the formula: R1, R2 and R3, which are independently selected from the group consisting of hydrogen a C1-3 alkyl group and a halogenated C1-3 alkyl group.

2], which are identical or different, each represent a linear or branched alkyl group having from 1 to 12 carbon atoms or a cycloalkyl group having from 5 to 8 carbon atoms.