Titanate, neoalkoxy

Monoalkoxy titanate Chelate titanate Quat titanate Neoalkoxy titanate Cycloheteroatom titanate Stearic acid functionality aids in dispersion of mineral fillers in polyolefins Greater stability in wet environments Water-soluble, aids adhesion of water-soluble coatings and adhesives Eliminates pretreatment associated with fillers, can be used as a concentrated solid additive Ultrahigh thermal properties for specialty applications... 

Monte, S. J., and Sugerman, G., New Neoalkoxy Titanate Coupling Agents Designed to Eliminate Particulate Pretreatment, 125th Meeting of the Rubber Division, Indianapolis, IN, May 8-11, 1984. 

A material used as antistat for methane foams is reported to also reduce corrosion risk, and neoalkoxy titanates and zirconates have been found to be effective antistats for polyolefins, polystyrene, and polyesters (6). 

Ken-Stat [Kenrich], TM for a series of antistats based on combined neoalkoxy titanates or combined neoalkoxy zirconates. 

Since silane agents are less effective with coupling lower-energy carbon black and CaCOs, other agents may be tried. For coupling these fillers, organometal-lic complexes based on "neoalkoxy" titanates and zirconates have been used as... 

Monte SJ, Neoalkoxy titanate and zirconate coupling agent additives in thermoplastics. Rapra Technology. Polym Polym Compos 2002 10(1). 

Minor amounts of thermally stable neoalkoxy titanate and zirconate additives may provide a means for postreactor, in situ metallocene-like repolymerization catalysis of a filled or unfilled polymer during the plasticization phase. This may result in the creation of metallocene-like (titanocene or zirconocene) behavior associated with effects such as increased composite strain to failure resulting in increased impact toughness or enhanced polymer foamabUity. Other effects to be discussed below with specific examples are related to enhanced processability, reduced polymer chain scission, shortened polymer recrystallization time, and compatibilization of dissimilar polymers. 

CAPS L /Binder = Coupling agent pellet system, 20% active neoalkoxy titanate/binder Example CAPS L 12/L = 20% LICA 12/10% silica/70% LLDPE binder... 

Table 5.3 Repolymerization effect of various neoalkoxy titanates and zirconates on the mechanical properties of unfilled ABS, PC, PP, and PS thermoplastics.

Figure 14.3 Treatment and additive effects on flexural modulus 40% HAR-160 mica in Profax 6523 polypropylene. A, Untreated mica B, Polypro PC 072 pm, 60% C, PCR silane, code 4A-2167, 2% D, KMG silane, 1% E, 3 1 OSC silane, 1% F, Polybond 1001, 16.7% G, amino silane, A-1100, 1% H, neoalkoxy zirconate, LZ-12, 1% I, neoalkoxy titanate, LICA-01, 1% J, Cavco Mod NP, 1%. (From Ref. 28.)...

Ken-React LICA, Neoalkoxy titanate Uquid coupling agents, Kenrich Petrochemicals, Inc. 

Coupling agents such as neoalkoxy titanate or zirconate improve interfacial interaction and filler... 

Neoalkoxy Titanate Eliminatea Pretreat ment Aaaociated with High Temperature Thermo plaatica and Folyurethanca 0 o 1 II R—0-Ti(0-P-0-P(0QHi7H)j OH... 

If the titanate cannot be diluted with a matrix-compatible Hquid, the filler can be pretreated by atomizing imdiluted titanate into a fluidized bed of filler particles. The neoalkoxy titanates are available in dry powder form as >65% concentrates on an inert carrier. These can be used to pretreat filler by intimate dry blending, although substrate coupling actually occru s in situ dmnng compoimding. 

The technology is still not problem-lree. Carbon black is a conductive filler therefore it does not cause an accumulation of static electricity formed because of fi ictional contact with the road. In a silica reinforced tire, static charge is a problem. Remedial actions have already been taken by the introduction of neoalkoxy zirconates and titanates which are capable of dissipating electrostatic charges. The future of the tire is not yet clear but it is expected that silica s share of this market will be 150,000 tons. This will be supplied to make full silica and silica/carbon black tires. 

Neoalkoxytri[ p-N- P-aminoethyl)amino phenyl] titanate RO-TifOCgHaNHCjHaNHjjj Neoalkoxy... 

In its simplest terms, the titanate function (1) mechanism may be classed as proton-reactive through solvolysis (monoalkoxy) or coordination (neoalkoxy) without the need of water of condensation, while the silane function (1) mechanism may be classed as hydroxyl-reactive through a silanol-sUoxane mechanism requiring water of condensation. The silane s silanol-siloxane water of condensation mechanism limits its reactions to temperatures below 100 °C, thereby reducing the possibility of in situ reaction in the thermoplastic or elastomer melt above 100 °C as is possible with titanates. In addition, a variety of particulate fillers such as carbonates, sulfates, nitrides, nitrates, carbon, boron and metal powders used in thermoplastics, thermosets, and cross-linked elastomers do not have surface silane-reactive hydroxyl groups, while almost all three-dimensional particulates and species have surface protons, thereby apparently making titanates universally more reactive. 

Specific compounds used include neoalkoxy tridodecylbenzenesulphonyl titanate, bis (dioctylpyrophosphate) ethylene titanate and neopentyl (diallyl) oxy, tri(dioctyl)phosphato zirconate. 

Tetraoctyloxytitanium di(ditridecylphospliite) Neoalkoxy,tri(doctylphosphate) titanate Neoalkoxy,tri(iV-ethylaniino-ethylaniino) titanate Dicyclo(dioctyl)pyrophosphate titanate... 

Zireonate eoupling agents provide an alternative, eorreeting the disadvantages of silanes and titanates. They do not produce color in contact with phenols other than nitrophenols. They do not interact with HAS and they often improve UV stability. Neoalkoxy zirconates provide novel opportunities for adhesion of polymers to metal substrates. They still have high cost. 

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