Resin reactivity

BA Swain, BL Anderson, WD Fuller, F Naider, M Goodman. Esterification of 9-fluorenylmethoxylcarbonyl a-amino acid /V-carboxyanhydndes to hydroxyl-functionalized resins. Reactive Polymers 22, 155, 1994. 

Figure 12.8 Resin reactivity as a function of time for RTM showing process window. The figure is qualitative and the resin reactivity is here a rough measure of the complete reaction rate profile...

W. Holl, Optical verification of ion exchange mechanisms in weak electrolyte resins, Reactive Polymers, 2 (1984), p. 93. 

Reactive Polyamide Resins. Reactive polyamide resins are used extensively lu react with epoxy or phenolic resins. The amount used in epoxy applications far exceeds the use with phenolic resins. 

Solubility excellent at all concentrations Chemical Nature a resinous, reactive emulsion... 

R. E. Barron and J. S. Fritz, Reproducible preparation of low-capacity anion exchange resins. Reactive Polymers, 1,215,1983. 

As in polyester resins, reactive halogens containing fire-retardant chemicals are most often used in epoxy materials. Tetrabromobisphenol A is perhaps the most widely used component for flame-retarding epoxy resins. Nara and Matsuyama (24) and Nara et al. (25) described the thermal degradation and flame retardance of tetrabrominated bisphenol A diglycidyl ether compared to the nonbrorainated structure. Their results indicate that bromine acts by vapor-phase as well as condensed-phase mechanisms of flame inhibition. 

AroCy . [Bhtme-Poulenc] Dicyanate monomers and jHepolymeis co-reacts with and cutes epoxy resins reactive diluent for adhesives, pepiegs laminating resin. 

Ricobond. [Ricon Resins] Reactive adhesive promoter for compounding with elastomers. 

Abrams I.M., Millar J.R. A history of the origin and development of macroporous ion-exchanger resins. Reactive and Functional Pol3uners 1997 35 7-22. 

Topp K.D., Grote M. S)mthesis and characterization of a 1,2,4,5-tetrazine-modified ion-exchange resin. Reactive and Functional Pol3tmers 1996 31117-136. 

Fonnulation ingredients that tend to bleed consist of low-molecular-weight resins, reactive diluents, and some curing agents such as imidazoles. ... 

The maximum exothermic temperature reached, the time required for the reaction to attain peak exothermic temperature, and the time of gelation are important factors to be considered when selecting a resin. Reactivity tests provide a method for determining the behavior, uniformity, and curing characteristics of a resin. The use of a resin for a specific application often depends on the reactivity of the resin. Measurements of reactivity are helpful in the evaluation of accelerator, catalysts, and other materials that must be considered for the correct use of the resin. 

Phenolic resins are of two types, reactive and nonreactive. Nonreactive resins tend to be oligomers of alkyl-phenyl formaldehyde, where the para-alkyl group ranges from to C4 to C9. Such resins tend to be used as tackifying resins. Reactive resins contain free methylol groups. In the presence of methylene donors such as hexamethylenetetramine, crosslink networks will be created, enabling the reactive resin to serve as areinforcing resin and adhesion promoter. 

Synonyms Coconut fatty acid glycidyl ester Uses Dispersant for inorg. fillers surf.-treating agent paint modifier textiles stabilizer syn. resins reactive diluent for epoxy resins Trade Names BlemmerDFA... 

Uses Comonomer for alkyd and acrylic resins reactive diluent for epoxy resins resin modifier for coatings applies. produces resins with reduced VOC contenL exc. color and gloss retention, high hardness, exc. exterior durability Manuf/Dislrib. Aldrich... 

Uses Reactive comonomer for acrylic, vinyl acetate, S/B, nitrile resins reactive diluent for radiation-cured coatings crosslinkable paint resin binder for textiles and paper adhesion promoter Manuf/Distrib. ABCR Aldrich Alfa Aesar Lancaster Synthesis Pfaltz Bauer TCI Am. 

Synonyms Polydimethylsiloxane, diacetoxymethyl-terminated Uses Internal lubricant and plasticizer for resins reactive with polysulfides and durable press fabrics... 

The optimized UF resin has a good quality for a class El resin (the value measured by the perforator method should be below 8 mg/100 g oven-dry board). The IB strength is well above the minimum acceptable value of 0.35 N/mm for a P2 type board (EN 312). However, resin reactivity (gel time) has to be enhanced. 

Liska reported preparation of water-soluble photoinitiators that contain carbohydrate residues as well as copolymerizable derivatives of the carbohydrate residues. These materials consist of alkylphenones, benzophenones and thioxanthones. To these compounds were attached carbohydrates like glucose, cellobiose, and 1-amino-1-deoxy-D-glucitol. In addition selected initiators were reacted with methacryloyl chloride to form polymerizable photoinitiators. The glucose modified photoinitiators were claimed to yield the best results with respect to compatibility with resins, reactivity and gel content. ... 

The shape of the die determines the profile shape. But the quantities of reinforcement and resin mix are critical to ensure that the die is filled properly. Resin systems must be highly reactive to cure in the available time. Machine speed, die temperature and resin reactivity are parameters which interact and must be balanced. 

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