Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Links processing

Kanegafuchi Chemical of Japan has iatroduced a chemical cross-linking process for produciag PE foams by the bead technique similar to EPS. [Pg.421]

Radiation cure of methyl vinyl sihcone mbber results ia a random cross-linking process with no differentiation between methyl and vinyl groups... [Pg.49]

Nevertheless, the system, composed of chain fragments of oxyfluoroniobate complexes, is thermodynamically less stable. Dipole properties of fragments of a certain length are re-orientated so as to be linked into typical infinite chains. There is no doubt that the fragment re-orientation and linking process initiates the partial reduction of niobium to Nb4+ and the oxidation of fluoride to elementary fluorine. The process scheme can be presented as follows ... [Pg.213]

It was found that Zs levels off at dose > 20 krad. The cross-linking process in dioxane occurs at times longer than several milliseconds. Similar results were obtained for PHS in dioxane, however the radiolytic yield of scission, G(S), measured from the initial slope of the plot of Zs vs. D, is different for the two polymers G(S) is about 12 for PBS and about 4 for PHS, in contrast to irradiation of the pure polymers, where for both at 30° G(S) 1080. [Pg.922]

Networks obtained by anionic end-linking processes are not necessarily free of defects 106). There are always some dangling chains — which do not contribute to the elasticity of the network — and the formation of loops and of double connections cannot be excluded either. The probability of occurrence, of such defects decreases as the concentration of the reaction medium increases. Conversely, when the concentration is very high the network may contain entrapped entanglements which act as additional crosslinks. It remains that, upon reaction, the linear precursor chains (which are characterized independently) become elastically effective network chains, even though their number may be slightly lower than expected because of the defects. [Pg.164]

Emulsifiers (see also Surfactants) 27, 46 End-blockers 12, 18, 19, 76 End-capping 157 End-linking processes 163 End-stoppers (see also End-blockers) 10 End-to-end cyclization 159,160 Energy, cavitation 188,189 —, electrostatic interactions 188, 189... [Pg.251]

The basis of model calculations for copolymerization, branching and cross-linking processes is the stochastic theory of Flory and Stockmayer (1-3). This classical method was generalized by Gordon and coworkers with the more powerful method of probability generating functions with cascade substitution for describing branching processes (4-6). With this method it is possible to treat much more complicated reactions and systems (7-9). [Pg.213]

The commonly observed, and technically troublesome, formation of gel in the polymerization of dienes testifies to the occurrence of cross-linking processes during their polymerization. According to Eq. (13), gel should begin to form when p reaches the critical value pc = l/y , where is the weight average degree of polymerization of the primary molecules. Thus... [Pg.388]

Another type of network imperfection, resulting from cross-linking of two units not distantly related structurally, is indicated in Fig. 94. Cross-linkages such as B are wasted (except insofar as the loop may be involved in entanglements not otherwise operative). The proportion of these short path cross-linkages should be small ordinarily but could become very large if the cross-linking process were carried out in a dilute solution of the polymer. [Pg.464]

The spectral results can be corroborated by electron microscopy which is capable of tracing the photocross-linking process on a supramolecular level109). [Pg.136]


See other pages where Links processing is mentioned: [Pg.208]    [Pg.190]    [Pg.224]    [Pg.225]    [Pg.269]    [Pg.29]    [Pg.291]    [Pg.27]    [Pg.54]    [Pg.239]    [Pg.170]    [Pg.760]    [Pg.920]    [Pg.157]    [Pg.56]    [Pg.341]    [Pg.563]    [Pg.779]    [Pg.880]    [Pg.159]    [Pg.141]    [Pg.357]    [Pg.358]    [Pg.360]    [Pg.361]    [Pg.392]    [Pg.465]    [Pg.181]    [Pg.128]    [Pg.129]    [Pg.137]    [Pg.79]    [Pg.79]    [Pg.46]    [Pg.141]    [Pg.36]    [Pg.352]    [Pg.28]    [Pg.145]    [Pg.145]   


SEARCH



Chemical process industry terms Links

Cross-linking photodegradation process

Cross-linking process

Dual Linking Processes

Energy-linked processes

Enzyme-linked caspase-7 processing

Enzyme-linked immunosorbent assay processed foods

Fabrication processes cross-linking

Flow diagram of the manufacturing process for polyolefin foams using radiation cross-linking

Fluor Solvent process Terms Links

Peroxide curing process cross-linking reactions

Polymer cross-linking process

Polymer processing cross-link promoters

Process equipment terms Links

Process terms Links

Processing Characteristics Curing and Cross-linking

Processing methods for cross-linking plastics

Processing temperature Terms Links

Processing, thermoplastics terms Links

Processing, thermosets terms Links

Reaction times, information-processing link

Reactive processing interfacial cross-linking

Separation processes terms Links

Simulator model, linking process

Waste processing Terms Links

Wire insulation cross-linking processes

© 2024 chempedia.info