Titan Wood

Titan Wood limited was formed in April 2003, by Accys Chemicals PTC, a UK-based company. The company is in the process of building a full-scale production facility for the acetylation of solid wood located at Arnhem in The Netherlands, which will become operational at the end of 2005. The company acquired equipment and intellectual property owned by the former AKBV, based in Arnhem. AKBV developed a pilot plant acetylation reactor of 2 300 litre capacity, 85 cm in diameter and 4 m long, capable of acetylating 0.9 m of solid wood per batch. 

Acetylation with acetic anhydride e.g. Accoya of TITAN WOOD) ... 

A commercial plant (Titan Wood) has started to produce acetylated wood and has given the acetylated wood the name of a new wood species Accoya . Improved properties are high durability, high dimensional stability and high UV-resistance. ... 

Haul R., Hubner K., and Kircher O. (1976) Oxygen diffusion in strontium titanate studied by solid/gas exchange. In Reactivity of Solids (ed. J. Wood and O. Lindquist), pp. 101-106. Plenum. 

In foam injection-molded parts the anooth-skinned resilient foam produces a tough energy-absorbing structure that is being used as a wood substitute in athletic products such as lacrosse-stick heads and hockey-stick blades. Protective structures for helmets and automotive parts are under development. All are being produced in densities ranging for 0.35 to 0.7 g/cc (22 to 44 Ib/ft ). In those applications where added sti ess is desirable the use of glass or titanate fiber reinforcement with the foamed structure is very effective (6). 

U.S. Pat. No. 5,153,241 [66] discloses composites made of thermoplastic polymers such as low-density polyethylene, polypropylene or polystyrene (90-60%) and wood pulp or sawdust (10-40% by weight) grafted with a titanium coupling agent (isopropyltri[n-ethylaminoethylamino] titanate) in acetone, along with some inorganic fillers, such as calcium carbonate and Portland cement. 

Selinene is another sesquiterpene found in woods. Its behaviour in the Vilsmeier-Haack-Arnold reaction is, like that of the acylation of cedrene using titanic chloride as a catalyst, another interesting and surprising piece of sesquiterpenoid carbocation chemistry. 

Since the stiffness of a laminate varies as a cubic relationship with the thickness, tltere are alternate metliods employed to achieve thickness - and hence stiffness - titan by using multiple layers of fiberglass and resin. Lightweight core materials, such as end-grained balsa wood, high-density polyurethane foam, PVC foam, and honeycombed materials, are available. These materials are sandwiched in between layers of unsaturated polyester resin to achieve increased laminate stiffness. Tlte common terminology used for this technique is sandwich construction . 

It is interesting to remark that other reactive materials which will readily undergo transesterification analogous to that of propylene carbonate with methanol are trialkyl borates, tetraalkyl titanates, and trialkyl phosphates in an alkaline environment. Also gas injection of methyl borate (and carbon dioxide) has been found to enhance the results of wood composites bonded with formaldehyde-based resins [29], just as the addition of propylene carbonate and glycerol triacetate have been shown to do in wood composites bonded with phenolic resins. 

Source RA. Wood, Beta Titans >UloyaMCIC-72-11,BatlBlleColumtMJ8 Laboratories, 1972... 

The last two items of the earlier list involve the behaviour of primers, in part chemical, in part physical, as forms of adhesives sticking the bulk adhesive to the actual metal, wood or other adherend. When dissimilar materials are to be joined, an adhesive suitable for one may not be so for the other. In these circumstances a primer for one of the substrates is chosen to be both suitable for it and compatible with the adhesive. Phenol-formaldehyde condensation products are often thus used particularly when the adhesive itself contains such material dispersed in another polymer, e.g. Redux775 (Bonded Structures, Ltd) or various epoxy-phenolic or nitrile-phenolic adhesives. Most important members of the class of coupling agents are the reactive silanes (siloxanes) and titanates. These materials have achieved their main use in the treatment of glass fibres for the manufacture of glass reinforced plastics. 

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