Isobutyl acrylate

Some commercially important isobutyl derivatives include isobutyl acetate, employed as a replacement solvent for -butyl acetate zinc dialkyldithiophosphate (ZDPP) lube oil additives isobutyl acrylate [106-62-8] and methacrylate [97-86-9] monomers isobutylamines and amino resins (qv). 

Ethyl acrylate Isobutyl acrylate 2-Ethylhexyl acrylate Isodecyl acrylate Glycidyl acrylate... 

Isobutyl acrylate, physical properties of, l 344t, 376t Isobutyl alcohol... 

ISOBUTYL ACRYLATE 2.7565 -2.7679E+03 4.7435E+00 -1.7391E-02 9.9204E... 

Table II shows the effect of various doses of electron irradiation on the solubility of ethylene-ethylacrylate copolymer. Extraction with boiling toluene for 64 hours revealed extensive crosslinking after absorption of a 5-megarep dose of radiation. Copolymers of ethylene with isobutyl acrylate and 2-ethylhexyl acrylate were examined briefly. A 29 wt.% isobutyl acrylate-ethylene copolymer of melt index 1.3 decigrams per minute was crosslinked to greater than 50% insolubility in boiling toluene by a radiation dose of 10 megareps. A copolymer containing 21% by weight of 2-ethylhexyl acrylate of melt index 8 decigrams per minute required a dose of 25 megareps to reach a 50% level of insolubility.

Rat. In a study previously reported in an abstract, four groups of 86 male and 86 female Sprague-Dawley rats, five weeks of age, were administered -butyl acrylate (purity, > 99.5% main impurities, butyl propionate and isobutyl acrylate) by whole-body inhalation at concentrations of 0, 15, 45 and 135 ppm (0, 86, 258 and 773 mg/m ) in air for 6 h per day on five days a week for 24 months. Interim kills were performed after 12 months (10 males and 10 females), 18 months (15 males and 15 females) and 24 months (10 males and 10 females). After a further six months, the study was terminated. No dose-related trend in mortality was observed. After 24 months of exposure, the mean cmnulative mortality w as approximately 20%. During the six-month post-exposure period, the cumulative mortality increased to approximately 45%. Exposure to -butyl acrylate vapour did not lead to an increased frequency of any tumour type in any organ that could be related to the test substance (Reininghaus et al., 1991). 

Organotungsten reversible addition-fragmentation chain transfer reagents, (IV), prepared by Lo [5] were used with AIBN to polymerize isobutyl acrylate. 

Currently this technology is of minor commercial significance, but stereoregular forms of numerous polyacrylates have been prepared and characterized These include poly(/-butyl acrylate) (138—141), poly(isopropyl acrylate) (142), and poly(isobutyl acrylate) (143,144). Carefully controlled reaction conditions are usually required to obtain polymers with some measurable degree of crystallinity. In nonpolar solvents the anionic polymerization of acrylates generally yields isotactic polymer, whereas in polar solvents syndiotactie polymerization is favored. The physical and chemical properties of the various forms are often quite different. A general review covers these and other aspects of the anionic polymerization of acrylates (145). 

Examples of acid modified polyolefins are the copolymers of ethylene with acrylic acid or methacrylic acid. Variations include the partially neutralised acid copolymers with metal ions (ionomers) or terpolymers of ethylene, an acid and an acrylate such as methyl acrylate or isobutyl acrylate. Acid-containing extrudable adhesives are widely used to bond to aluminium foil. Examples of anhydride-modified polyolefins include terpolymers of ethylene, maleic anhydride and acrylates such as ethyl acrylate or butyl acrylate and the anhydride-grafted polyolefins. Some typical applications and stmctures of a variety of multilayer materials with extruded polymer tie-layer adhesives, as described in Du-Pont trade literature, are detailed in Table 16.2. 

ISOBUTYL ACRYLATE, inhibited (DOT) ISOBUTYL PROPENOATE ISOBUTYL-2-PROPENOATE Z-... 

MAiBu isobutyl methacrylate MABu butyl methacrylate AiBu isobutyl acrylate... 

Phosphine-Catalyzed Reactions. This ligand has also been shown to be effective in the direct organocatalysis of asymmetric processes. For example, the phosphine-catalyzed [3 -1- 2] annula-tion reaction of ethyl 2,3-butadienoate and isobutyl acrylate produces two cyclopentene regioisomers (1 and 2) (eq 2). Isomer 1 generally predominates and enantiomeric excesses ranging from... 

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