Conjugated diene butyl

Metal salts of neodecanoic acid have also been used as catalysts in the preparation of polymers. For example, bismuth, calcium, barium, and 2kconium neodecanoates have been used as catalysts in the formation of polyurethane elastomers (91,92). Magnesium neodecanoate [57453-97-1] is one component of a catalyst system for the preparation of polyolefins (93) vanadium, cobalt, copper, or kon neodecanoates have been used as curing catalysts for conjugated-diene butyl elastomers (94). 

Conjugated-Diene Butyl. CDB can be obtained by the controlled dehydrohalogenation of halogenated butyl mbbet (27). This product concept remains in the development stage. 

The conjugated diene butyl chain can be cross-linked with peroxide or radiation exposure. Free radicals also ate used to graft cute with vinyl monomers, eg, methacryhc acid or styrene, which lead to transparent mbbet exhibiting a T of about —59 C. 

Conjugated-diene butyl, 4 436—431 Conjugated drying oils, 9 148 Conjugated hemoglobin, 4 122-124 Conjugated linoleic acid (CLA), 10 829 17 664-665... 

EXXON chemical brochure on conjugated diene butyl elastomer. 

Exxon, chemical brochure on Conjugated Diene Butyl Elastomer. 

CDB Conjugated diene butyl polymer (C conjugated diene content 1.2-1.5 mol % Exxon). 

Table 11.43. Electron irradiation of polypropylene (PP) and conjugated diene butyl polymer (CDB) [Berejka and Bradley, 1981]...

Halogenation and hydrohalogenation of elastomers have been reported extensively in the literature [26]. The main problems with these reactions are the cyclization and chain scission that occur parallel to the halogenation reaction. These introduce difficult problems in the characterization of the resulting products. Despite these problems, several products have been prepared and commercialized. Chlorination of poly(l, 4-butadiene) to prepare a product similar to poly(vinyl chloride) has been reported by several workers [27]. This process had extensive side reactions and chain degradation. The chlorination of butyl rubber and conjugated diene-butyl rubbers gives end products that are used in the tire industry as inner liners for air retention. 

Cellulose butyrate (also carbon black reinforcing pigment) Chlorinated butadiene rubber Conjugated diene butyl elastomer Cellulose plastics in general... 

Baldwin and Gardner prepared somewhat more complex structures, as illustrated in Figure 5.6. They employed a new elastomer as polymer, designated as a conjugated diene butyl, CDB, and thought to have the following structures ... 

BOPP Biaxially oriented poly(propylene) film CDB Conjugated diene butyl elastomer... 

Functionalized rubbers. Butyl rubber (isobutylene with about 2% iso-prene) has been functionalized through the residual double bonds via the bro-mobutyl intermediate to produce a material with 2% conjugated diene (see Fig. 19). This resin shows high reactivity towards e-beam or UV (free radical or cationic [53]). The bromo butyl intermediate has also been used to attach acrylate or photoinitiator groups to the butyl backbone [54]. 

The oils of ajowan show excellent antioxidant effects (better than those of the synthetic antioxidant and butylated hydroxytoluene Gurdip et al., 1998). Mehta et al. (1994) demonstrated ajowan as a source of natural lipid antioxidant. Soybean oil treated with meth-anolic extracts has been subjected to storage and heating tests, which showed a marked decrease in oxidation of the oil as measured using peroxide values, conjugated diene... 

The electropositive nature of alkali metals allows for insertions into alkali metal-carbon bonds. Thus, the reaction of an organoaUcali metal reagent with an unsaturated organic molecule produces a more complex organoaUcali metal compound. In particular, organolithium compounds will react in this way with conjugated dienes, even under mild conditions. For example, 1,3-butadiene reacts with ferr-butyl lithium to give an allyl lithium compound (equation 15). 

---