Trimethylol propane triacrylate TMPTA

Leong et al. evaluated a hyperbranched poly(amino ester) synthesized in a novel A3+2BB B approach by Michael addition polymerization of trimethylol-propane triacrylate (TMPTA) (A3-type monomer, triacrylate), with a double molar of l-(2-aminoethyl) piperazine (AEPZ) (BB B -type monomer, trifunctional amine) (Fig. 11) [127]. To check its DNA condensation behavior and cytotoxicity, the poly(TMPTAl-AEPZ2) obtained was protonated. Due to the protonation ability of... 

NPGDA), trimethylol propane triacrylate (TMPTA), Trigonal 14 (Noury Chem. Corp. mixture of benzoin butyl ethers), benzoyl peroxide, and t-butyl perbenzoate were used as obtained from commercial suppliers without further purification. 

Peroxide initiated polymerizations (scan 30°-250°C) of lauryl acrylate (LA), I,6-hexanediol diacrylate (HDDA), neopentyl glycol diacrylate (NPGDA), and trimethylol propane triacrylate (TMPTA) revealed total polymerization heats per mole of C=C of 19.2, 17.6, 16,7, and 15.4 kcal, respectively. PhotoactIvated Trigonal 14 initiated polymerizations at 40° yielded total polymerization heats per mole of C=C of 17.4, 11.7, 8.2, and 9.1 kcal for LA, HDDA, NPGDA, and TMPTA, respectively. At 60°C the photopolymerization heats for the latter three monomers increased to 16.6, 9.7, and 10.2 kcal per mole of C=C, respectively. 

Table III with Acid. Comparison of Trimethylol Propane Triacrylate (TMPTA) as Additives in Styrene Grafting to Polyethylene ...

Three photopolymerizable primer monomers, namely the linear hexanediol diacrylate (HDDA), the branched trimethylol propane triacrylate (TMPTA), and the linear tripropyleneglycol diacrylate (TPGDA), and a model of a linear unsaturated polyester/ alkyd varnish repeating unit were used for the study. A model of the two top chains of an elementary cellulose I crystallite was used as a substrate, the refined conformation of which had already been reported [12]. 

Some acrylate monomers are acrylic acid, butyl acrylate, 2-ethylhexyl acrylate, methyl acrylate, ethyl acrylate, acrylonitrile, n-butanol, methyl methacrylate (plexiglas) and trimethylol propane triacrylate (TMPTA). 

The second kind is that of polyfunctional agents that could promote cross-linking (against chain scissioning). Trimethylol propane trimethacrylate (TMPTMA), trimethylol propane triacrylate (TMPTA) or triallyl isocyanurate (TAIC) belong to this category (Figure 9.3). 

Dubey et compared the efficiency of different additives to promote the cross-linking of a nonmiscible ethylene propylene diene monomer rubber (EPDM)/styrene-ethlene/butylene-styrene copolymer (SEES) blend y-irradiated between 50 and 500 kGy ethyleneglycol dimethacrylate styrene-ethylene/ butylene-styrene copolymer (EGDMA), tri(propylene glycol) diacrylate (TRPGDA), trimethylol propane triacrylate (TMPTA), and trimethylol propane... 

Oligomer urethane acrylate (LR 8739) and photoinitiator Irgacure 184 were obtained from IAEA. Reaction diluents 2-methoxy ethyl acrylate (MEA, Tg = -110°C), 2-ethylhexyl acrylate (EHA, Tg = -50°C), 2-hydroxy ethyl methacrylate (HEMA, Tg = 55°C), N-vinyl pyrrolidone (NVP, Tg = 175°C), tripropylene glycol diacrylate (TPGDA, Tg = 90°C), and trimethylol propane triacrylate (TMPTA, Tg 250°C) were used as procured from E, Merck without any further purification. 

Synonyms 2-propenoic acid 2-ethyl-2-[[(i-oxo-2-propenyl)oxy]methyl]-1,3-propanediyl ester 2-ethyl-2-[[(i-oxoallyl)oxy]methyl]-i,3-propanediyl diacrylate 1,1,1-trimethylol propane triacrylate TMPTA... 

The limited availability of raw materials in the 60 s is apparent from the early reviews of radiation curing [8]. As previously mentioned, the first UV/EB applications utilized primarily polyesters diluted with styrene. The first change in this technology came with the use of multifunctional acrylates (MFA s) as total or partial substitution for styrene. These low volatility reactive diluents overcame many of the styrene problems. These monomers, produced via esterification of polyols, included hexanediol diacrylate (HDODA), trimethylol propane triacrylate (TMPTA), tetraethylene glycol diacrylate (TTEGDA), and pentaerythritol triacrylate (PETA). 

In previous work, polyfunctional monomers such as divinyl-benzene (DVB) and trimethylol propane triacrylate (TMPTA) have been used to enhance the rates of radiation induced homopolymerisation of monomers such as methyl methacrylate. Since common intermediates may well exist in both radiation grafting and polymerisation processes, it is conceivable that these polyfunctional monomers when used in additive amounts ( 1%) would also accelerate radiation grafting. 

The methodology developed was to test the feasibility of self-healing by using an encapsulated multifunctional acrylates, i.e. trimethylol propane triacrylate (TMPTA) in presence of a radical photoinitiator (Darocur 1173). 

The healing agent (trimethylol propane triacrylate TMPTA monomer) and the photoinitiator (Darocur 1173) presented in - Figure 3, are encapsulated in poly(urea-formaldehyde) by in situ pol)nnerization - Figure 4. 

Silica-oragnic microcapsules based on 50 wt. % MPTS and 50 wt. % TEOS have been selected to encapsulate the monomer trimethylol propane triacrylate TMPTA and the photoinitiator Darocui 1173. The microcapsules prepared have diameter size of 4.00 0.30 Lun in optimal synthesis conditions reaction time of 2 h and stirring rate of 450 rpm. These silica-gel macrocapsules have been chosen over urea/formaldehyde or polyurethane due to their thermal stability up to 375 °C. 

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