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Coupling agents, titanates

Also called mutual solvent or cosolvent. See also silane coupling agent, titanate coupler, and adhesion promoter. [Pg.236]

Recommended for use as coupling agents are monoalkoxytriacyl titanates, such as isopropoxytriisostearyl titanate, Ken-React KR TTS or TYZOR ISTT [61417-49-0] which are useflil in mineral-filled polyolefin resins (526) chelated titanates, such as di(dioctyl)pyrophosphatooxoethylene titanate,... [Pg.163]

S. J. Monte, Ken-Keact Reference Manual, Titanate, Xirconate andAluminate Coupling Agents, Kenrich Petrochemicals Inc., Bayoime, N.J., 1993. [Pg.171]

Various inorganic esters have been claimed as coupling agents for reinforced plastics, including aminobenzyl phosphonates, dicetylisopropylborate, alkoxy compounds of aluminum, zirconium and titanium, zircoaluminates, and numerous substituted titanates [1]. These metal alkoxides could function in a similar manner to the orthosilicates by reacting with hydroxylated substrates. Like the simple orthosilicates such as tetraethyl orthosilicate (TEOS), it is less evident how an-... [Pg.410]

Coupling Agents. Coupling agents are added to improve the bonding of the plastic to inorganic filler materials, such as glass fibres. A variety of silanes and titanates are used for this purpose. [Pg.3]

Table 5b Structures and Physical Properties of Titanate Coupling Agents... Table 5b Structures and Physical Properties of Titanate Coupling Agents...
The structure of a titanate coupling agent is expressed by the general formula RO—Ti (OXRY)3. These titanate coupling agents are useful for improving flexibility and processability [70]. Joseph and coworkers [71]... [Pg.825]

For silica fillers, hydrolytic stability is best when M = Si for other fillers, e.g., calcium carbonate then titanate- or zirconate-coupling agents are preferred. [Pg.113]

Other additives such as silanes, titanates and zirconates are also used to overcome the processing characteristics of silica fillers. Silanes not only give improved processability of silica-filled compounds, but also provide improved crosslinks between the silica particle surface and the rubber molecular chains giving increased physical properties. The use of silane coupling agents at a... [Pg.145]

Fig. 10. Viscosity and first normal stress difference vs. shear stress for polypropylene (at 200 °C) filled with calcium carbonate (50 wt%) with and without a titanate coupling agent (TTS ) (O, ) pure polypropylene (PP) (A,A) PP/CaC03=50 50 (by wt.) ( , ) PP/CaC03=50 50 with TTS (1 wt%). The open symbols were obtained from a cone and plate instrument and the closed symbols from a slit/capillary rheometer. Fig. 10. Viscosity and first normal stress difference vs. shear stress for polypropylene (at 200 °C) filled with calcium carbonate (50 wt%) with and without a titanate coupling agent (TTS ) (O, ) pure polypropylene (PP) (A,A) PP/CaC03=50 50 (by wt.) ( , ) PP/CaC03=50 50 with TTS (1 wt%). The open symbols were obtained from a cone and plate instrument and the closed symbols from a slit/capillary rheometer.
Hunt et al. [ 17] have investigated the role of various coupling agents, such as zirconates, titanates, and zircoaluminates, in zirconia-polypropylene suspensions for use in the production of ceramics by injection moulding. All the coupling agents were observed to reduce the melt viscosity. [Pg.554]

Titanate coupling agents have been found to offer corrosion resistance12 and to give improved age and water resistance in reinforced plastics.13 Their application in thermoplastics has been discussed in detail,1415 the requirements of a coupling agent have been established16,17 and the theory of their use has been described.18 A summary of the different types of structure, with examples, is available.17... [Pg.1012]

Zirconates Zirconate coupling agents have very similar structure to the titanates. They also perform similar functions. Zirconium compounds exist in both water and organic solvent soluble forms. Like the titanates, zirconate coupling agents are useful in improving the dispersion characteristics of fillers in polymer systems. Examples of zirconate coupling... [Pg.194]

TABLE 10.6 Common Titanate Coupling Agents and Their Applications ... [Pg.194]

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See also in sourсe #XX -- [ Pg.376 ]



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