Poly hydantoins

Poly(hydantoins) can be produced by the reactions shown in equation (28-74). 

Special compounds of this class are suitable for the production of electrical insulation films of high heat stability. 

Dermer and G. E. Ham, Ethyieneimine and Other Aziridines, Academic Press, New York, 1968. 

Hauser, Alkylenimines, in Ring-Opening Polymerizations (K. C. Frisch and S. L. Reegen, eds.), Dekker, New York, 1969. 

Aminoplastics, Cleaver-Hume Press and Interscience, New York and London, 1960. 

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Titanates have been instrumental in the bonding of fluorinated resins to packaging films, poly(hydantoin)—polyester to polyester wire enamel, polysulfide sealant to polyurethane (a phosphated titanate is recommended), polyethylene to cellophane using a titanated polyethylenimine, and silicone mbber sealant to metal or plastic support using polysilane (Si—H) plus polysiloxane (Si—OR) and titanate as the adhesive ingredients (450—454). Polyester film coated first with a titanium alkoxide, then with a poly(vinyl alcohol)—polyethylenimine blend, becomes impermeable to gases (455). 

Poly(hydantoins) with aromatic and aliphatic monomeric units in the main chain are produced by the reaction of diisocyanates with the product from the reaction of fumaric esters and aliphatic diamines ... 

Aromatic poly(hydantoins) are suitable for use as electric isolation films and aromatic-aliphatic poly(hydantoins) can be used as isolation lacquers. They have good thermal stability but absorb relatively large amounts of water. 

Poly(parabanic acids) are close relatives of poly(hydantoins). They are also known as 2,4,5-triketoimidazolidine polymers. They can be produced by several processes, for example, from oxamidic esters and (capped) isocyanates ... 

The reaction of diisocyanates with difunctional glycinates 31 affords linear polymers 32, which cyclize to form poly(hydantoins) 33. Phenol and cresol are the preferred solvents, and the cresol solutions of 33 can be used directly for wire coating and other applications (99). 

Another approach to poly(hydantoins) involves cyclization of a-cyanoalkyl substituted polyureas, obtained from aromatic diisocyanates and the corresponding nitriles. Hydrolysis of the resultant poly(iminoimidazolidinones) affords poly(hydantoins) (100). 

Mn2(CO)io in a simple photoinitiated free radical polymerization. The antiplatelet activity of these polymers were compared with that of poly(ether-Wrethane) carrying the hydantoin residues in side chains. 

The multipolymer enzymatic resolution of soluble polymer-supported alcohols 42 and 43 was achieved using an immobilised lipase from Candida Antarctica (Novozym 435). The R-alcohol was obtained in enantiomerically pure form (>99% ee) after its cleavage from the poly(ethylene) glycol (PEG) scaffold . The achiral hydantoin- and isoxazoline-substituted dispirocyclobutanoids 47 were produced using both solution and solid-phase synthesis <00JOC3520, OOCC1835>. 

In contrast, there are substances like some nitrofurane derivatives for which the presence of particular molecular structures is the decisive condition. Thus, a nitrofurane derivative prepared by Casini and his co-workers (87) has shown bacteriostatic properties similar to classical low molecular preparations of nitrofurane, e.g. l-[5-(nitrofurfuryliden)amino]hydantoine. The polymeric substance shows an activity considerably longer than that of the reference substance if parenterally applied, whereas oral application gives no effect. This is easy to understand because, as already mentioned, polymers cannot be resorbed in the digestive tract. Here, the active polymeric substance [22] has been prepared by condensation of 5-nitrofuraldehyde with poly(acryloylhydrazide). 

New polyols, such as polycarbonate polyols (Duracatb, PPG Ind. Inc.), hydantoin-containing polyols (Dantocol DHE, Lonza Inc.), polyo-lefinic polyols (Poly bd, Atochem Co.) and its hydrogenated polyols, i.e.. Polytail (Mitsubishi Chemical Corp.) are now available as conunercial products. An application of polyolefinic polyols for foams has recently been reported (119). The chemical structures of the above polyols are shown below ... 

The biocidal polymers poly(l,3-dichloro-5-methyl-5-(4 -vinylphenyl)hydantoin) and poly(l,3-dibromo-5-methyl-... 

A series of poly(amide-imide)s have been obtained by polycondensation of hydantoin and thiohydantoin derivatives of pyromellitic acid chlorides with [N,N -(4,4 -carbonyldiphthaloyl)] bisalanine diacid chloride [57], N,N -(pyromellitoyl)-bis-i-phenylalanine diacid chloride [58], and N,N -(4,4 -diphenyl ether) bistrimellitide... 

Custom CARO. See Carotene Custom Cetyl. See Cetyl alcohol Custom DIOL. See Propylene glycol Custom DMDM. See DMDM hydantoin Custom EGDS. See Glycol distearate Custom EGMS. See Glycol stearate Custom GMS. See Glyceryl stearate Custom Nylon Poly. See Nylon 12 Custom SDQ-85. See Stearalkonium chloride Custom Stearyl. See Stearyl alcohol Customate IPM. See Isopropyl myristate Customate IPP. See Isopropyl palmitate Customide CD, Customide CDM. See Cocamide DEA... 

Lauralkonium chloride Poly [oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride] Potassium dichloroisocyanurate algicide, synthetics N-Cyclopropyl-N-(1,1-dimethylethyl)-6-(methylthio)-1,3,5-triazine-2,4-diamine algicide, wastewater treatment Benzalkonium chloride algicide, water treatment 1 -Bromo-3-chloro-5,5-dimethyl hydantoin Chloroxylenol 2,2-Dibromo-3-nitrilopropionamide Potassium dimethyidithiocarbamate Potassium permanganate... 

Salter et al. (2009) developed an N-chloramide modified poly(m-phenylenediamine isophthalamide) (Nomex ) in an attempt to produce a regenerable self-decontaminating material for protection against chemical threats. The authors derivatized Nomex with a chlorinated analog of l-chloro-5,5-dimethyl 3-(trimethoxysilylpropyl)hydantoin (BA-1) in this approach. While... 

In principle, this method allows attachment to a poly(ether-urethane) of any molecule containing a polymerizable double bond or into which such a bond may be introduced. We have applied it to the antiplatelet agent 5-(6-carboxyhexyl)-l-(3-cyclohexyl-3-hydroxypropyl) hydantoin (Burrows Wellcome 245C) (I). This derivative was kindly given to us by Sir John Vane... 

K. Eaghihi, K. Zamani, A. Mirsamie, M.R. Sangi, Microwave-assisted rapid synthesis of novel optically active poly(amide-imide)s containing hydantoins and thiohydantoins in main chain. Europ. Poly. J. 39, 247-254 (2003)... 

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