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Ozeki Chemical's PARATEX is Dedicated to Supporting
the Creation of a Life- and Earth-Friendly Environment.

Equipped with its unique self-closing function

The flexibility and unique water proof mechanism of PARATEX supplies quick protection against unexpected cracks in the construction material.

 

One unique feature Paratex waterproof materials is quick self-closing protection against unexpected cracks in waterproof layers. Constructions, such as concrete water tanks, become vulnerable to temperature changes, humidity, and pressure after having been exposed to these factors for a long period of time. Paratex waterproof layers synchronise with the movement of the concrete framework and prevent water-leaking problems with its self-closing protection when cracks have unexpectedly occurred in the construction material.


Waterproof Layers That Automatically Close Unexpected Cracks

Cracks in a Concrete Foundation of a Building Crack-Vulnerable Condition Crack-Closed Condition
  • Paratex contains a high proportion of flexible resins, so it excels in crack-searching as well as in waterproofing.
  • Because waterproof layers strongly adhere to the concrete framework, the layers can break as the framework breaks under the condition of zero-span tension.
  • Waterproof layers inflate as they absorb inflowing water, and this process enhances chemical interactions inside the layers, resulting in synthesized chemical compounds that help close cracks in the construction material.


Self-Closing Mechanism of Paratex Waterproofing

By mixing Paratex emulsion with Paratex admixture, the dispersions of EVA resin, alumina ceramics, and aggregate become uniform in the emulsion liquid. Metal ions and hydrated components in alumina ceramics flow into the emulsion liquid. The hydrated components consume water of the emulsion liquid, and subsequently the components turn into inorganic hydrates.

During the hydration process, the inorganic hydrates, metal ions, and EVA resin start the crosslinking reaction. During this process, an EVA merges simultaneously with another EVA. The processes of the water dispersion, crosslinking reaction, and fusion of the resins eventually result in serial films which function as solid, flexible waterproof layers.