Diallyl isophthalate

Diallyl Isophthalate. DAIP polymerizes faster than DAP, undergoes less cyclization, and yields cured polymers of better heat resistance, eg, up to ca 200°C. Prepolymer molding materials such as Dapon M of EMC, are not sticky. Maleic anhydride accelerates polymerization, whereas vinyl isobutyl ether retards it and delays gelation in castings. Copolymers with maleic anhydride are exceptionally hard and tough and may scratch homopolymer surfaces. 

Other allyl compounds described in the literature include diallyl carbonate, diallyl isophthalate and diallyl benzene phosphonate. 

This monomer has been used as the basis of a laminating resin and as a reactive diluent in polyester laminating resins, but at the present time its principal value is in moulding compositions. It is possible to heat the monomer under carefully controlled conditions to give a soluble and stable partial polymer in the form of a white powder. The powder may then be blended with fillers, peroxide catalysts and other ingredients in the same manner as the polyester alkyds to form a moulding powder. Similar materials may be obtained from diallyl isophthalate. 

Used industrially for the manufacture of flavorings, perfumes, acrolein, diallyl phthalate, diallyl isophthalate, and pharmaceuticals used to denature alcohol. Used agriculturally as herbicide and fungicide. 

Diallyl isophthalate (DAIP), 2 258, 261 physical properties of, 2 258t thermoset molding properties of, 2 262t Diallyl phthalates (DAP), 2 258-263 20 110 copolymerization, 2 259-260 Diallyl terephthalate (DATP), 2 259 DIALOG file, 18 246 DIALOG OneSearch, 18 244 -dial suffix, 2 58 Dialysate, 26 814, 815 composition of, 26 817 Dialysis. See also Hemodialysis alternative modes of, 26 832-833 requirements for adequate, 26 821-822 treatment time and frequency of, 26 833-834... 

Thermosensitive hydrogels, 13 743 THERMOSET Thermoset recycling pyramid, 13 780-781 Thermoset elastomers, 20 71 Thermoset epoxy resins, curing of, 10 421 Thermoset flexible polyurethane foams properties of, 25 461 Thermoset matrix composites, 21 456 Thermo set molding properties of diallyl isophthalate, 2 262t Thermoset polymers, 25 455 cured, 10 425... 

C for a long time. Polymer is used only under severe thermal operating conditions. Similar polymer from diallyl isophthalate are capable of withstanding temperatures upto 220°C and organic solvents. 

Diallyl phthalate, diallyl isophthalate Acetone, methyl ethyl ketone Abrasion. Grit or vapor blast or 100-grit emery cloth followed by solvent degreasing. Steel wool may be used for abrasion... 

There are two major allyl plastics, diallyl phthalate (DAP) and diallyl isophthalate (see Diallyl phthalate). Both of these are widely used in fiber reinforced forms. The allyl plastics are usually compression or... 

The variability in analytical pyrolysis results as a function of equilibrium temperature Tqq in the pyrolysis of a polymer is further exemplified for poly(diallyl isophthalate), which has the idealized structure shown below ... 

Figure 3.1.2. Variation of weight % loss for a poly(diallyl isophthalate) sample in a TGA experiment at a heating rate of 1(f C/min.

Figure 3.1.3. Result for a Py-GC/MS analysis of poly(diallyl isophthalate). Pyrolysis done on 0.4 mg material at 600° C, with the separation on a Carbowax type column.

Table 3.1.1. Compounds identified in the pyrogram of poly(diallyl isophthalate) shown in Figure 3.1.3 and performed at 60(f C.

Another polyester with aromatic groups in its structure is poly(diallyl isophthalate), CAS 25035-78-3. This polymer has a crosslinked structure and its pyrolysis products were discussed in Section 3.1. The polymer used for the Py-GC/MS experiment described in Section 3.1 had M = 500,000, and the experimental conditions were similar to those for other examples described in this book (600° C pyrolysis in He and Carbowax column separation). The main pyrolysis product was found to be 1,4-benzendicarboxylic acid di-2-propenyl ester. This compound is the homolog of terephthalic acid dibutylene ester formed in the pyrolysis of PBT. 

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