Combining this data with the fluorosilica (430 g/mol for
alkyl group: C[H.sub.2]C[H.sub.2][C.sub.8][F.sub.17]), it can be surmised that higher molecular weight or more grafting coverage is not necessarily better for the AR properties.
This trend in ultrasonic degradation of poly(n-butyl methacrylate-co-alkyl acrylate) is attributed to the
alkyl group interaction and large chain stretching of polymer.
Replacing the hydroxyl groups on the surface of silica particles with appropriate
alkyl groups reportedly improved the silica dispersion in the rubber matrix and prevented the adsorption of curing agents.
1, for the preparation of organoclay were selected in order to investigate the effects of bulky
alkyl groups, hydrogen bonding between hydroxyl groups of BHL and VER, and the reaction of VER with the unsaturated C = C groups of DEM and BHLV.
They found that the degree of polymerization of graft polymers was small for the graft polymerization of AN and propylene oxide onto PPTA, the degree of N-alkylation of PPTA was 90-100%, and the adhesion strength of PPTA for polyethylene, poly(methyl methacrylate), and ionomers increased by the introduction of long
alkyl groups, carboxymethyl group or epoxy compounds.
These so-called coupling agents typically have the structure [R - Si - X.sub.3] where R is an
alkyl group and X is hydrolyzable (e.g.
In 1941, Bayer patented an alkylaryl-paraphenylene diamine with a cyclohexanone
alkyl group for use as an oxidation inhibitor.
In the formula (1), M is a metal atom, R is a hydrogen atom, an
alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms or an alkynyl group having 2 to 18 carbon atoms, and n is an integer of 1 or more.
Chain extender Chemical structure Joncryl[R] ADR 4300 R1-R6 are H, C[H.sub.3], a higher
alkyl group, or combinations of them; R7 is an
alkyl group and x, y, and z are all between 1 and 20.
This suggested that the inclusion complex made of [alpha]CD and MT was in a form covering the
alkyl group of MT from the cavity of a wide edge of CD with respect to the
alkyl group of the -CH (h) of MT.
Keeping all other units fixed and varying the
alkyl group (R) from C[H.sub.3] to [C.sub.6][H.sub.13], we elucidated the effect of the different alkyl chain on the geometric, electronic, and optical properties of such dye for their use as sensitizers in solar cells.