POLYMER CEMENT-BASED COMPOSITION

• Main Authors: SUGIYAMA MITSUAKI, SUGIYAMA SHIGEAKI
• Format: Patent
• Language: English; Japanese
• Published: 01.02.2018
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a polymer cement-based composition which reduces efflorescence of a cement-based composition excellent in trowel finish property using water re-dispersible resin powder together with aqueous resin emulsion, and re-emulsification and discoloration of a resin.SOLUTION: A polymer cement-based composition contains 100 pts.wt. of water re-dispersible resin powder and 60-120 pts.wt. of an acrylic resin alone or a mixed body of a fluororesin and a water dispersion type resin, and is composed of 2-6 pts.wt. of resin emulsion (in terms of solid content) having MFT (lowest film-forming temperature) of 0°C or lower, and an inorganic filler in which the total sum of the water re-dispersible resin powder and the resin emulsion is 25-55 wt.% with respect to hydraulic cement (in terms of solid content) and 100-600 wt.% thereof with respect to the hydraulic cement.SELECTED DRAWING: None 【課題】水性樹脂エマルジョンとともに水再分散性樹脂粉末を使用するコテ仕上げ性に優れるセメント系組成物の白華、樹脂の再乳化、退色を低減したポリマーセメント系組成物の提供【解決手段】水再分散性樹脂粉末１００重量部と、アクリル樹脂単独、あるいはフッ素樹脂および水分散型樹脂の混合体又は共重合体６０〜１２０重量部からなり、ＭＦＴ（最低造膜温度）を０℃以下に設定した樹脂エマルジョン（固形分換算）２〜６重量部と、前記水再分散性樹脂粉末と樹脂エマルジョンとの総和が水硬性セメントに対して（固形分換算）２５〜５５重量％と、水硬性セメントに対して１００〜６００重量％の無機フィラーとよりなるポリマーセメント系組成物。【選択図】なし