Stearyl methacrylate

DiaHyl phthalate copolymerizes at 80°C with peroxide catalyst and small amounts of long chain vinyl monomers including vinyl laurate, dioctyl fumarate, lauryl methacrylate, and stearyl methacrylate (43). The products show increased elongations but reduced tensile strengths. 

Block copolymers comprised of PS and polymethacrylate blocks with aliphatic stearyl or decyl side groups were prepared by the sequential addition of monomers, as shown in Scheme 1. Styrene was polymerized in THF at - 78 °C using s-BuLi as the initiator [11,12]. The nucleophilicity of the living polystyryllithium was reduced by reaction with DPE (in order to avoid reactions with the carbonyl groups), followed by the polymerization of the methacrylate monomer. Stearyl methacrylate, SMA is associated with... 

PEROXIDES AND PEROXIDE COMPOUNDS - ORGANIC PEROXIDES] (Vol 18) Stearyl methacrylate [32360-05-7]... 

Fontana and Thomas25) estimated LH from the sedimentation rate of carbon-black particles covered with poly(lauryl methacrylate) (PLMA) or stearyl methacrylate/N-vinyl-2-pyrrolidone copolymer (PAM/A-VP). The values of LH for PLMA were 20 to 40 A, while those for PAM-VP were 210 40 A. 

Comparable results were observed for the copolymerization of maleic anhydride and methyl methacrylate (8 = 10.8 for copolymer), methyl acrylate (8 = 10.7 for copolymer), and butyl methacrylate (8 = 10.7 for copolymer). However, the copolymers of maleic anhydride and stearyl methacrylate (8 = 10.3) and maleic anhydride and isobutyl methacrylate (8 = 10.4) have lower solubility parameter values, and hence, a slow homogeneous copolymerization was observed when these monomers were copolymerized with maleic anhydride in benzene. 

Usually, the fabrication of a close - packed assembly of amphiphilic molecules at an air - water interface by the Langmuir method requires suitable subphase conditions related to the ionic species and its concentration, pH, temperature and addition of another complementary solutes. In the last case, to explore the feasibility of enhancing the interactions of some amphiphilic polymers with water soluble polymers at the air - water interface, it was studied the system of poly(monomethyl itaconate) (PMMel) as subphase stabilizer of maleic anhydride - alt - stearyl methacrylate(MA-alt-StM) monolayers at the air - water interface. 

Scheme 3.6 Maleic anhydride-alt-stearyl methacrylate (MA-alt-StM), poly(monomethyl ita-conate) (PMMel), poly(stearyl methacrylate) (PStM). (From ref. [68])...

In order to simplify the previous preparation method, a more straightforward procedure was later developed by the same group [30], The polymerization mixture consisted of an aqueous solution of acrylamide A, piperazine diacrylamide 111, and vinylsulfonic acid 12 with added stearyl methacrylate 2 or butyl methacrylate 1A to control the hydrophobicity of the gel. Since neither of these non-polar monomers is soluble in water, a surfactant was added to the mixture, followed by sonication to form an emulsion of the hydrophobic monomer in the aqueous solution. Once initiated, the mixture was immediately drawn into an acryloylsilanized capillary, where the polymerization was completed. The presence of the strongly acidic sulfonic acid functionalities afforded EOF that remained constant over a broad pH range. 

Poly( ethylene oxide)-block-poly (propylene oxide)-hZock-poly(ethylene oxide)-g-poly(acrylic acid) (PEO-fc-PPO-fc-PEO-g-PAA, Pluronic-PAA) graft copolymers were synthesized by free radical grafting copolymerization of acrylic acid monomers onto PEO-h-PPO-h-PEO (Pluronic F127) and the aqueous solution properties were characterized by Bromberg [133, 134]. Chiu et al. [135] reported on the micellization of (non-ionic) poly(stearyl methacrylate)-gra/f-poly(ethylene glycol) graft copolymers. 

Thioglycolic acid, HS -CE —COOH, is even more efficient as a transfer agent2-98,99) Polymerization of various monomers such as styrene, methyl methacrylate and even stearyl methacrylate was carried out in the presence of thioglycolic acid whereby a carboxy group is introduced into the chain end of the polymer molecule. 

With stearyl methacrylate 98), using AIBN as the initiator, a satisfactory control of the molecular weight can be achieved by appropriate choice of the molar ratio [monomer]/[thioglycol acid]. It was also established that the subsequent reaction with glycidyl methacrylate does not induce detectable changes in the molecular weight. 

Dodecyl methacrylate (DMA) and stearyl methacrylate (SMA) are efficiently reactive coemulsifiers in the St mini-emulsion polymerization using SDS as the emulsifier [ 13]. The high coemulsifier (hydrophobe) activity of these unsaturated compounds results from the fact that the Rp data are almost the same in the mini-emulsion polymerizations stabilized by SDS/CA, SDS/DM A, SDS/SMA and SDS/HD. The average particle size (D) of the reaction mixture comprising both the monomer droplets and latex particles in the SDS/CA or SDS/DMA stabilized polymerization decreases rapidly from ca. 300-350 nm to a minimum (ca. 115— 125 nm), followed by a gradual increase to a plateau (ca. 125-150 nm). The initial abrupt decrease in D is attributed to the generation of particle nuclei by ho-... 

Schematic representation of CdSe QDs dispersion in poly(hexyl methacrylate) after in situ polymerization. Monomers hexyl methacrylate (R = CeHij), lauryl methacrylate (R = CijHjs), stearyl methacrylate (R = CuHsy), and behenyl methacrylate (R = C22H45). 

Chem. Descrip. Cetyl stearyl methacrylate, MEHQ stabilizer Uses Acrylic for mf of polymers used as oil additives, vise, index improvers, and pour pt. depressanis internal plasticizer for adhesives, UV-curable resins, and coatings... 

Chem. Descrip. Stearyl methacrylate with 100 25 ppm MEHQ inhibitor CAS 32360-05-7... 

Ammonium persulfate A -Hexadecyl methacrylate Stearyl methacrylate A-Octadecyl acrylate 77-Octadecyl methacrylate Dococyl acrylate Initial monomer concentration Cetyltrimethylammonium bromide Cooperative diffusion coefficient Apparent diffusion coefficient Dynamic light scattering iV V-Dimethylacrylamide Dimethyl sulfoxide Tensile modulus... 

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