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1.发明授权Method of making high opacity resin porous films and aqueous latex for producing said films 失效制造高效树脂多孔薄膜和生产胶片的水性薄膜的方法
公开(公告)号：US3819542A
公开(公告)日：1974-06-25
申请号：US23971972
申请日：1972-03-30
Applicant: DESOTO INC
Inventor： KREIDER R
Abstract: An aqueous latex coating composition adapted to deposit films which dry to form a cellular layer of high opacity is provided by swelling the resin particles of the aqueous latex with a primary organic solvent which is essentially immiscible in the aqueous phase of the latex, such as xylene, and by introducing into the aqueous phase an at least partially water miscible organic solvent, such as propylene glycol, having a lower evaporation rate and a lesser capacity for solvating the resin of the latex than said primary solvent. When the primary solvent evaporates, a cellular film is formed with the secondary solvent serving to increase the opacification which is obtained.
Abstract translation: 适用于沉积干燥以形成高不透明度的多孔层的薄膜的水性胶乳涂料组合物是通过使主要的有机溶剂溶胀来提供水性胶乳的树脂颗粒，该主要有机溶剂基本上与胶乳的水相中不混溶，例如二甲苯 并且通过向水相中引入至少部分水混溶性有机溶剂（例如丙二醇），其具有较低的蒸发速率和较少的溶剂化胶乳树脂的能力，而不是所述主要溶剂。 当主溶剂蒸发时，形成具有二次溶剂的细胞膜以增加获得的不透明度。
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2.发明授权Method of making high opacity resin porous films and aqueous latex for producing said films 失效制造高透明树脂多孔薄膜和生产胶片的水性薄膜的方法
公开(公告)号：US3817880A
公开(公告)日：1974-06-18
申请号：US27791872
申请日：1972-08-04
Applicant: DESOTO INC
Inventor： KREIDER R
IPC: C08F263/04 , C08J9/28 , C08F45/24 , C08J1/14
CPC classification number: C08J9/28 , C08F263/04 , C08J2201/05 , Y10S521/908 , C08F212/08
Abstract: AN AQUEOUS LATEX COATING COMPOSITION ADAPTED TO DEPOSIT FILMS WHICH DRY TO FORM A CELLULAR LAYER OF HIGH OPACITY IS PROVIDED BY SWELLING THE RESIN PARTICULES OF THE AQUEOUS LATEX WITH A PRIMARY ORGANIC SOLVENT WHICH IS ESSENTIALLY IMMISICIBLE IN THE AQUEOUS PHASE OF THE LATEX SUCH AS XYLENE, AND BY INTRODUCING INTO THE AQUEOUS PHASE AN AT LEAST PARTIALLY WATER MISCIBLE ORGANIC SOLVENT, SUCH AS PROPYLENE GLYCOL, HAVING A LOWER EVAPORATION RATE AND A LESSER CAPACITY FOR SOLVATING THE RESIN OF THE LATEX THAN SAID PRIMARY SOLVENT. WHEN THE PRIMARY SOLVENT EVAPORATES, A CELLULAR FILM IS FORMED, THE SECONDARY SOLVENT SERVING TO INCREASE THE OPACIFICATION WHICH IS OBTAINED. PARTICULATE MATTER OR MATERIAL WHICH CRYSTALLIZES TO FORM PARTICULATE MATTER IS INCORPORATED INTO THE LATEX IN SMALL AMOUNT. THE PARTICULATE MATTER SERVES TO INCREASE ULTIMATE OPACITY AND ALSO TO GENERATE OPACITY MORE RAPIDLY WHEN A DEPOSITED FILM IS DRIED.
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