Poly amine, preparation

Poly amines prepared by Koch [4] were converted into the corresponding isocyanate derivatives, (I), using phosgene methylenebis(phenyl isocyanate) was prepared by Strofer [5]. 

Vogtle et al. have prepared chiral poly(imine) dendrimers of various generations by condensation of non-racemic 5-formyl-4-hydroxy[2.2]paracyclophane moieties with poly(amine) dendrimers [71]. They have found that the optical activity of these dendrimers was nearly constant with increasing generation number. 

This book reviews some of the results of investigations of chemical conversions of chloral and TNT to new aromatic di(poly)amines and aromatic tetracarboxylic acid dianhydrides useful for the preparation of new polyimides combining good thermal, mechanical and electrical properties with improved processability. 

Bom and Ritter found that the viscosity of side-chain poly(methacrylate CD rotaxane) 56 was higher than that of model systems [96, 97]. When Wenz and Keller prepared the CD-based main-chain poly(amine rotaxane) 50 they found that the viscosity increased with threading time as more CD was threaded on to the backbone [88]. 

The anion-exchange membrane is prepared from alkylene poly amines likewise condensated with formaldehyde (7, 62). 

Hagen [3] prepared diphenylmethane and poly amines in the absence of metallic ions using an aniline/formaldehyde ratio of 4 1, respectively, at 80°C. 

Putrescine and Cadaverine.— The poly-amines may be obtained by the reduction of poly-nitro compounds or poly-cyanogen compounds (pp. 70, 75). In the former case the amine has the same number of carbons as the nitro compound but in the latter case the amine has two more carbons than the radical of the di-cyanogen compound. The usual method of formation, however, is the one already used in preparing the mono-amines, viz., from the corresponding halogen compound by action of ammonia. 

Polymea mictocapsules containing 0,0-3,5,6-trichloro-2-pyridyl phosphorothioate (Dursban) were prepared by reacting a polyisocyanate and a poly amine and the factors affecting the formation of the microcapsule wall examined. The formation of polyurea was confirmed by FTIR spectroscopy, the thermal properties of the microcapsules were investigated by DSC and the morphology of the microcapsules detenninedby scanning electron microscopy. Optimum conditions for the formation of a thin surface l er and a porous matrix were established. 9 lefs. 

Macro-diisocyanates based on the reaction of an excess of 2,4-toluene diisocyanate with different poly(dimethylsiloxane)diols of different lengths have been prepared by Nikolaev et al. [71]. These macro-diisocyanates were reacted with 2 in stoichiometric proportions and the resulting adduct (22) was cured with a commercial epoxy resin in the presence of what was termed poly(ethylene)-poly(amine) at room temp-cerature, 80, and 100°C. The mechanical and thermal properties of steel-to-steel assemblies joined by these adhesives were better than those obtained using more common binders. 

Calculate the molecular weight and munber of end groups from generation 0 to generation 6 for a poly (amido amine) prepared using NH3 as core molecule and ethylene diamine and methyl acrylate as monomers. 

The poly(amine-hydrazide)s can be prepared from the polycondensation of 9-[MA -di(4-carboxyphenyl)amino]anthracene with terephthalic dihydrazide and isophthaUc dihydrazide by the Yamazaki phosphorylation reaction. The poly(amine-hydrazide)s are readily soluble in many common organic solvents and can he solution cast into transparent films [48]. The materials can be thermally cyclodehydrated into the corresponding oxadiazole polymers in the range of 300-400 °C. An anthrylamine-based poly(amine-1,3,4-oxadiazole)s shows electrochromic characteristics with changing color from the pale yellow neutral form to the red in the range of 0.00 to -2.20 V. 

Polyamide resins are prepared from poly amines and dimer fatty acids. Dimer fatty acids are produced from unsaturated drying (or semi-drying) oil fatty acids by Diels-Alder reaction. A possible dimer acid might be... 

Esteramides (Fig. 8) are prepared as alternative to diesterquats. In general, the reaction is carried out with primary or secondary alkanol(poly)amines [28,29], which may include heterocycles [30,31] that are reacted with fatty... 

By this chemistry, polymers with one amine end group as well as a,co-diamine-functionalized polymers can be used to prepare AB or ABA copolymers, respectively. The method gives copolymers with well-controlled polypeptide segments. Furthermore, no unreacted homopolymers or homopolypeptides could be detected. Several examples of the polymer B block have been reported poly(octenamer) prepared by acylic diene metathesis polymerization [67], poly(methyl acrylate) prepared by atom transfer radical polymerization (ATRP) [70], poly(ethylene glykol) PEG, and PDMS [68]. The method was expanded for the synthesis of... 

Polyftert-butylamine sulfide) prepared from rm-butylamine and S2CI2 and poly(imine sulfide) prepared from amylamine and 8202 were found to be superior vulcanizing agents for rubbers compared to sulfur and other polyfalkylamine sulfides) [183,184]. Paushkin et al. [185-193] have done extensive studies on poly(amine sulfides). Cross-linked polyethylene, on heating at 150 °C for 75 h in air in the presence of polyfaniline disulfide), lost only 5% of the crosslinked phase in comparison to 100% in the absence of p[Pg.107]

Irrespective of these differences, both approaches have proved to be extremely successful for the preparation of dendritic macromolecules. By the use of either the divergent or convergent growth approaches a number of different groups have prepared dendrimers based on a wide variety of functional groups i.e. dendritic poly(amides) (5), poly(etherketones) (6), poly(amines) (7), poly(phenylenes) (8), poly(silanes) (9), poly(phosphonium salts) (10), poly(esters) (11), poly(phenylacetylenes) (12), poly(alkanes) (13), etc. Interesting variations on this theme have been the preparation of optically active dendrimers (14), dendritic poly(radicals) (15), and dendrimers based on co-ordination chemistry with... 

Other fairly recent commercial products, poly(vinyl amine) and poly(vinyl amine vinyl alcohol), have addressed the need for primary amines and their selective reactivity. Prior efforts to synthesize poly(vinyl amine) have been limited because of the difficulty hydrolyzing the intermediate polymers. The current product is prepared from /V-ethenylformamide (20) formed from the reaction of acetaldehyde and formamide. The vinyl amide is polymerized with a free-radical initiator, then hydrolyzed (eq. 7). 

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