-
1.
公开(公告)号:US08546467B2
公开(公告)日:2013-10-01
申请号:US13649611
申请日:2012-10-11
Applicant: Rohm and Haas Company
Inventor: James Bohling , Wei Gao , Qing Zhang
CPC classification number: C09C1/36 , C01P2004/84 , C01P2006/60 , C08F2/26 , C08K2003/2241 , C09C1/3676 , C09D5/028 , C09D7/61 , C09D133/02 , C09D135/02 , C08F2220/1825 , C08F220/14 , C08F220/36 , C08F222/02 , C08F220/06 , C08L33/08
Abstract: The present invention relates to a process comprising the steps of a) contacting an aqueous dispersion of a TiO2 slurry containing adsorbing dispersant with an adsorbing latex to form a mixture, wherein the pH of the mixture of the TiO2 slurry and adsorbing latex are sufficiently high to inhibit interaction between the TiO2 and the adsorbing dispersant; then b) lowering the pH of the mixture of step a) sufficiently to promote interaction between the TiO2 and the adsorbing latex, thereby forming a composite; wherein the adsorbing latex comprises structural units of itaconic acid or a salt thereof. The process of the present invention provides for improved hiding and reduced grit for coatings compositions.
Abstract translation: 本发明涉及一种方法,包括以下步骤:a)将含有吸附分散剂的TiO 2浆料的水性分散体与吸附胶乳接触以形成混合物,其中TiO 2浆料和吸附胶乳的混合物的pH足够高至 抑制TiO2与吸附分散剂的相互作用; 然后b)降低步骤a)的混合物的pH以充分促进TiO 2和吸附胶乳之间的相互作用,从而形成复合材料; 其中所述吸附胶乳包含衣康酸或其盐的结构单元。 本发明的方法提供了改进的涂层组合物的隐藏和减小的砂砾。
-
2.
公开(公告)号:US20130096250A1
公开(公告)日:2013-04-18
申请号:US13649611
申请日:2012-10-11
Applicant: Rohm and Haas Company
Inventor: James Bohling , Wei Gao , Qing Zhang
IPC: C08L35/00 , C09D135/00
CPC classification number: C09C1/36 , C01P2004/84 , C01P2006/60 , C08F2/26 , C08K2003/2241 , C09C1/3676 , C09D5/028 , C09D7/61 , C09D133/02 , C09D135/02 , C08F2220/1825 , C08F220/14 , C08F220/36 , C08F222/02 , C08F220/06 , C08L33/08
Abstract: The present invention relates to a process comprising the steps of a) contacting an aqueous dispersion of a TiO2 slurry containing adsorbing dispersant with an adsorbing latex to form a mixture, wherein the pH of the mixture of the TiO2 slurry and adsorbing latex are sufficiently high to inhibit interaction between the TiO2 and the adsorbing dispersant; then b) lowering the pH of the mixture of step a) sufficiently to promote interaction between the TiO2 and the adsorbing latex, thereby forming a composite; wherein the adsorbing latex comprises structural units of itaconic acid or a salt thereof. The process of the present invention provides for improved hiding and reduced grit for coatings compositions.
Abstract translation: 本发明涉及一种方法,包括以下步骤:a)将含有吸附分散剂的TiO 2浆料的水性分散体与吸附胶乳接触以形成混合物,其中TiO 2浆料和吸附胶乳的混合物的pH足够高至 抑制TiO2与吸附分散剂的相互作用; 然后b)降低步骤a)的混合物的pH以充分促进TiO 2和吸附胶乳之间的相互作用,从而形成复合材料; 其中所述吸附胶乳包含衣康酸或其盐的结构单元。 本发明的方法提供了改进的涂层组合物的隐藏和减小的砂砾。
-