PHENYLENE BISMALEIMIDE

Rubber blends with cure rate mismatch is a burning issue for elastomer sandwich products. For example, in a conveyor belt composite structure there is always a combination of two to three special purpose rubbers and, depending on the rubber composition, the curatives are different. Hence, those composite rubber formulations need special processing and formulation to avoid a gross dissimilarity in their cure rate. Recent research in this area indicated that the modification of one or more rubbers with the same cure sites would be a possible solution. Thus, chlorosulfonated polyethylene (CSP) rubber was modified in laboratory scale with 10 wt% of 93% active meta-phenylene bismaleimide (BMI) and 0.5 wt% of dimethyl-di-(/ r/-butyl-peroxy) hexane (catalyst). Mixing was carried out in an oil heated Banbury-type mixer at 150-160°C. The addition of a catalyst was very critical. After 2 min high-shear dispersive melt mix-... 

Interfacial adhesion and, thereby, compatibility can be enhanced by the selective crosslinking reaction in polymer blends. Inoue and Suzuki [26] reported the properties of blends dynamically crosslinked PP-EPDM blends. The crosslinking agent was yV,N -/w-phenylene-bismaleimide - poly(2,2,4 - trimethyl - 1,2-dihydroquino -line) system. Increase in interfacial adhesion leads to... 

Coagents are often used with peroxides to increase the state of cure. Some coagents, such as polybutadiene or multifunctional methacrylates, are used at high levels to form polymer grafts or interpenetrating networks. Other coagents such as triallyl cyanurate, triallyl trimellitate, and meta-phenylene bismaleimide are used at low levels to reduce the tendency of the polymer to degrade by chain scission. 

Cab-O-Sil treated with DABES was overpolymerized with bismaleimide, 1,1 -(methylenedi-4,l-phenylene)bismaleimide (BMI) from Aldrich. A mole ratio of 5 1 (BM1-DABES) was used and the BMI was added to the surface in 2-butanone, heated at 80°C for 90 min, dried, and then heated at 185°C for about 2 h [13]. 

In order to prepare non-styrenic polymer-supported organotin chlorides, which are expected to show physical properties such as mechanical strength, polarity and porosity different from those of polystyrene-based supports, Deleuze and coworkers copolymerised dibutyl[3-(allyloxy)propyl]tin chloride with N-phenylmaleimide (PMI) and l,l/-(methylene-4,l-phenylene)bismaleimide (MPBMI) to prepare the polymers 88a and 88b180. 

PHENYLDIPHENYL see TBC750 PHENYL-DRANE see SPC500 N,N -(m-PHENYLENE)BISMALEIMIDE see BKL750 m-PHENYLENEBIS(METHYLAMINE) see XHS800 2,2 -(l,3-... 

Porous polystyrene cross-linked with l,l -(methylene-4,4 -phenylene)bismaleimide (72) shows good recoveries for aniline (la), 1,2- (lj) and 1,3-phenylenediamine (lk) in water solution, probably due to adsorption on the imide moieties. Other cross-linked porous aromatic polymers show poor results with these PAA analytes even if they adsorb efficiently similarly substituted nitroaromatic analytes. Recovery of the analytes from the SPE cartridges can be done with MeOH end analysis was by HPLC-DA-UVD132. 

Reaction between a,a -(p-phenylene)-bis(N-phenylnitrone) and m-phenylene-bismaleimide gives an isoxazolidine polymer (86) that does not melt above 300°. 92 93 The polymer 87 obtained from the same nitrone and ethylene dimethacrylate has a lower melting point... 

From the same nitrone, or glyoxal-bis(>V-phenyl)-nitrone and m- or p-phenylene-bismaleimide, polymers, 88-91 are obtained.94 Some physical properties of these polymers are summarized in Table VII. 

Beilstein Handbook Reference) 1,3-Bismaleimidobenzene BRN 0249503 1,3-Dimale-imidobenzene m-Dimaleimidobenzene EINECS 221-112-8 HVA 2 HVA-2 curing agent Maleimide, N,N -(m-phenylene)di- m-PHDM m-Phenylenebismaleimide N,N -(m-Phenylene)bismaleimide 1,1 -(1,3-... 

One of the curing characteristics that we would like to control is reversion, which can occur in compounds containing natural rubber. There is more than one approach to reducing the amount of reversion. We can use sulfur donors or increase the ratio of accelerator concentration to sulfur concentration, or we could carry out the vulcanization at a reduced temperature for a longer period. However, these approaches give rise to effects that will have to be compensated. Another approach is use of additives such as certain bisimides, e.g., N,N -m-phenylene-biscitraconimide and N,N -/m-phenylene-bismaleimides (Datta et al., 1997, 1998 Datta and Ivan, 1995) or trialkoxysilylalkylpoly-sulfides such as bis-(3-triethoxisilylpropyl)-tetrasulflde (Tan and Wolff, 1985). 

Methylene diphenyl diisocyanate. See MDI 1,1-(Methylenedi-4,1-phenylene) bismaleimide 1,1 -(Methylenedi-4,1-phenylene) bis-IH-pyrrole-2,5-dione. See Bismaleimide Methylene di (phenylene isocyanate) Methylene di-p-phenylene isocyanate. See MDI Methylene dithiocyanate. See Methylenebis (thiocyanate)... 

Another modification for FR PP compounds is an in situ interphase modification system based on phenylene bismaleimide (BMI). A 60% w/w filled PP so treated has a failure stress greater that that of the unfilled matrix and a failure strain almost matching the yield strain of the unfilled matrix. 

PA-6 (100-0) or PA-6,66,610 terpolymer or PA-69/ chlorinated PE (0-100)/L101 RI Internal mixer at 225 °C/seiective solvent extraction/FTIR/mechanicai properties/ also blends containing m-phenylene bismaleimide or trimethyioipropane triacrylate + RI Coran and Patel 1983a... 

The effect of varying the position of the imide groups in phenylene bismaleimides (PDM) and of using aliphatic bismaleimides has been studied [31]. Using a magnesium hydroxide-filled PP copolymer, the m- and p-isomers (1,3- and 1,4-PDM, respectively) were found to be equally effective, while the o-isomer (1,2-PDM) was considerably less effective (see Table 6.8). An aliphatic bismaleimide was also included in the study and gave broadly comparable results. 

This chapter discusses the effect of addition of a reactive monomer, namely, m-phenylene bismaleimide (BMI) in the composite processing stage on the processing and end-use properties. Various particulate fillers were used for making composites and their properties were compared with respect to processing and end-use properties. 

Tanaka et al. [32] prepared a polymer with an indigo unit in the main chain (22), and reported that the insoluble polymer obtained contained a fraction that was attracted to a permanent magnet and showed a definitive hysteresis loop at room temperature. Recently, polymers obtained from catalyst-free 1,3-dipolar cycloaddition of l,3-bis-(3-sydnone) and phenylene)bismaleimide (23) have exhibited a magnetic behavior character-... 

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