Ladas & Parry
Water proofing compositions for cement mortar or concrete
 Water proofing compositions containing a reclaimed butyl rubber of used inner tube scraps as the active component have a high adhesion to cement mortar or concrete and are used for water proofing materials in buildings and civil engineering works. 
Hayakawa Rubber Co., Ltd.
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C09K C04B C09K C04B C09K C09K C09K C04B C09K C09K C09K C09J C09K E02B C09K C09K C09K
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Sekiji Toshihiro
Yokota Fujii