Chloro methyl styrene

In a series of papers, Matsuda et al. [291-295] employed RAFT-SIP with immobilized benzyl N,N-diethyldithiocarbamate to form polymer brushes from styrene, methacrylamides, acrylamides and acrylates, NIPAM and N-vinyl-2-pyrrolidone on various surfaces. The SIP is initiated by UV irradiation of the surface-bonded dithiocarbamates. Thermoresponsive polymer brushes were prepared by the polymerization of NIPAM and investigated by XPS, wetting experiments and mainly SPM [294]. Patterned polymer brush layers were also prepared. When chloro-methyl styrene was used as a comonomer, RAFT-SIP resulted in branching. By control of the branching, spatio-resolved hyperbranching of a controllable stem/ branch design was realized (Fig. 9.32) [293, 295]. 

Hyperbranched polymers (see structure LXII in Sec. 2-16a) are produced from monomers that contain both a polymerizable double bond and an initiating function, such as p-(chloro-methyl)styrene. The product is highly branched with one double bond end group and many... 

According to the method used by Gacal et al. (2006) to obtain PSt with anthryl pendant groups (PSt-AN), St, and 4-chloro-methyl styrene (CMS) (which is a functionalizable monomer) are copolymerized and anthracene functionality is attached to the formed (random) copolymer by an etheri cation procedure, as shown in Scheme P12.ll.2. Thus, poly(styrene-co-chloromethylstyrene), P(St-co-CMS), copolymers containing desired amounts of CMS moieties, are prepared via NMP of St and CMS at 125°C, while for etheri-... 

Sequential addition of a second monomer (e.g., styrene,p-terbutyl styrene, p-methyl styrene, indene, -chloro styrene, isoprene, and a-methyl styrene) to make glassy outer-block... 

Copolymers belonging to the case c) were found to be those of styrene with 1-vinyl naphthalene (crystallinity appears for molar contents of the latter lower than 50% by moles), -ethyl styrene and -bromo styrene (crystallinity appears for contents of the latter comonomers up to 10—15% by moles), -chloro styrene and -methyl styrene (crystallinity is shown for contents up to 30 and >50% by moles respectively of the latter). It is remarkable that in all these cases the introduction of bulkier monomeric units into the polystyrene chain always causes a fairly considerable increase only in the equatorial unit cell dimensions. Cases a and b are shown in Fig. 3 and in Fig. 4. 

Chloromethyl polystyrene (Merrifield resin) has been prepared by chloro-methylation of polystyrene [23,27,53,54], by copolymerization of 4-chloromethylsty-rene with styrene [20,26,55,56], and by chlorination of poly(4-methylstyrene) [57,58], Aminomethyl polystyrene is most conveniently prepared by direct amidomethylation of polystyrene with (hydroxymethyl)amides or (halomethyl)amides under acidic conditions followed by hydrolysis [59-62], but it has also been prepared directly from chloromethyl polystyrene ([63,64] see also Section 10.1.1.1). 

Polymer-supported DBU (PDBU) was prepared from DBU and chloro-methylated 98 2 styrene-divinylbenzene copolymer (85JAP(K)177006). The PDBU reagent can be used as an esterification catalyst or dehydrohalogenat-ing agent. It can be regenerated quantitatively by treatment with sodium hydroxide in methanol. 

Poly(p-chloro styrene) Poly(oxy-2,2-dichloromethyltrimethylene) Poly(oxy-1,1 -dichloromethyltrimethylene) Poly(o-methyl styrene)... 

Chloromethyl resin, Merrifield resin, a poly-styrene/divinylbenzene resin functionalized with the chloromethyl group introduced by Friedel-Crafts-type chloro-methylation with the aUcoxy-substituted chloromethane in the presence of tin(IV)... 

Jefabek et al. [79] reported the adsorption of furfural onto the hypercrosslinked sorbents prepared by post-crosslinking both chloro-methylated gel-type styrene-5% DVB copolymer and chloromethylated macroporous copolymer of styrene with 8% DVB via Friedel-Crafts... 

A soln. of SOCI2 in methylene chloride added dropwise to a soln. of / -(methyl-sulfinyl)styrene in the same solvent at a rate to maintain reflux, then stirred 4 hrs. at 25° cc-chloro- -(methylthio)styrene. Y 19%. G. A. Russel and L. A. Ochrymo-wycz, J. Org. Chem. 35, 2106 (1970). 

The problem of separating the unconverted peptides from the desired synthesis product is neatly solved by coupling the peptide to a solid matrix. In this synthesis, introduced by Merrifield, a cross-linked poly(styrene) chloro-methylated with CH2O/HCI is used. The chloromethyl groups are reacted with the desired N-terminal aminocarboxylic acids ... 

Acrylate styrene acrylonitrile Acrylate modified styrene acrylonitrile Acrylic acid ester rubber Acrylonitrile butadiene rubber or nitrile butadiene rubber Acrylonitrile butadiene styrene Acrylonitrile styrene/chlorinated polyethylene Acrylonitrile methyl methacrylate Acrylonitrile styrene/EPR rubber or, acrylonitrile ethylene propylene styrene Alpha methyl styrene Atactic polypropylene Butadiene rubber or, cis-1,4-polybutadiene rubber or, polybutadiene rubber Butadiene styrene block copolymer Butyl rubber Bulk molding compound Casein formaldehyde Cellulose acetate Cellulose acetate butyrate Cellulose acetate propionate Cellulose nitrate Chlorinated polyethylene Chlorinated polyvinyl chloride Chloro-polyethylene or, chlorinated polyethylene. 

Photoreactions of charge-transfer compounds formed between poly(l-raethyl styrene) and tetracyanobenzene degraded the polymer on exposure to radiation not directly absorbed by it. Radical-induced photo-oxidation of solutions of poly (1-methyl styrene) in chlorobenzene has been studied. In a series of papers Weir and co-workers have investigated the photolysis of polymers of 4-amino-, 4-nitro-, 4-fluoro-, 4-chloro-, 4-bromo-, and 4-(2,2-dimethylethyl)-styrene. ... 

A more simple alternative method to reduce diffusivity of active molecules in solid polymers and to prevent their self-aggregation consists of the formation of co-crystals with suitable polymer hosts. Polymeric co-crystalUne phases are quite common for several regular and stereoregular polymers Uke syndiotactic polystyrene (SPS) [17-24], syndiotactic poly-p-methyl-styrene [25-31], syndiotactic poly-p-chloro-styrene [32], polyethyleneoxide [33-37], poly (muconic acid) [38,39], polyoxacyclobutane [40], or syndiotactic polymethyl-... 

The poly(a-methyl styrene) specimens were obtained via Dr. James K. Rieke, Dow Chemical Company, Midland, Michigan, who provided some characterization data for the samples, in addition to that provided by Amoco Corporation. The polyfmera-chloro styrene) fractions were prepared by Mr. David Cranmer, formerly of MMI, by fractional precipitation of a thermally polymerized ffi-chlorostyrene. 

---