TPR Systems Additive I is a polyisocyanate based methacrylic resin. It is a constituent of the urethane-modified reactive resins TPR Systems RU 727 and RU 747 (see corresponding product data sheets).

Application

To bind surface moisture and on slightly moist substrates, a proportion of 10 – 15 % pbw. of TPR Systems Additive I can be added to the primer resin TPR Systems R 51. The penetrative capacity and the hardening times of the primer are hardly influenced by the admixture. However, you must ensure that subsequent coats with the corresponding TPR Systems reactive resins are applied within 8 hours.

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