Other

Pq Corporation

Pq Silicas UK Limited

Ronaldo Dos Santos Flor

Flavio Ernesto Ribeiro

Joris Antonius Van Der Eerden

Gary A Baird

Paolo De Almeida Lima

The claimed invention refers to the development of rubber recipes to improve essential properties related to correlated rubber compounds. Silica gel is added to the rubber compound as a reinforcing agent, partially replacing some of the precipitated silica. The use of silica gel for the pneumatic market provides improved tear resistance, elongation and adhesion performance, and improves adhesion of the tire on wet surfaces.

Silica gel as reinforcement agent for rubber compounds

The present invention refers to a stable sodium and iron silicate solution that has a weight ratio of SiOto NaO from 1.5 to 2.5 and a total percentage of solids, expressed by the sum of SiOand NaO, from 20% to 55%. Said solution also has a soluble iron content, expressed by Fe, from 0.1% to 7%, and a water content from 38% to 79.9%. The present invention also refers to the process for preparing said stable solution of sodium and iron silicate, which comprises the steps of: (a) providing a siliceous material containing iron; (b) submitting said siliceous material containing iron to a hydrothermal treatment with caustic soda under high temperature and controlled pressure; and (c) filtering said reacted solution to separate the reacted portion of the hydrothermal treatment from the unreacted portion. Additionally, the present invention refers to the uses of said stable sodium and iron silicate solution.

Stable solution of sodium and iron silicate, process for preparing said solution and uses thereof

Embodiments of the invention relate to methods for making and compositions including zeolite with an impregnated titanium dioxide. Such zeolite/titanium dioxide compositions may be useful, for example, as a substitute or extender for titanium dioxide used in coatings.

Zeolite impregnated with titanium dioxide

A method for extending resin-based wood glues, particularly condensation polymer resin-based glues, comprises the steps of (i) providing an aqueous extender composition comprising 20% to 50% by weight of alkali metal silicate and 1% to 25% by weight of polyhydric alcohol, preferably a sugar such as sucrose, (ii) providing a solution comprising a resin and (iii) blending the aqueous extender and the solution together to form a glue. The extended glues are suitable for preparing water resistant processed wooden panels such as plywood or chipboard with reduced need for resin. The extended glues do not set excessively rapidly, allowing time for the processing of the wood composites.

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Säo Bernardo do Campo, Brazil

Ronaldo Dos Santos Flor