基本信息:
- 专利标题： ALUMINA TRIHYDRATE, METHODS OF MANUFACTURE, AND APPLICATIONS
- 专利标题（中）：氢氧化铝，方法和用途。
- 申请号：EP91915631.0 申请日：1991-07-16
- 公开(公告)号：EP0538411A1 公开(公告)日：1993-04-28
- 发明人： ADKINS, Adrian, S. , RUHS, Daniel V. , McRAVEN, Merle , LAUDENBERG, John L. , CLEVER, Terrance R.
- 申请人： ALUMINUM COMPANY OF AMERICA
- 申请人地址： Alcoa Building Pittsburgh PA 15069 US
- 专利权人： ALUMINUM COMPANY OF AMERICA
- 当前专利权人： ALUMINUM COMPANY OF AMERICA
- 当前专利权人地址： Alcoa Building Pittsburgh PA 15069 US
- 代理机构： Madgwick, Paul Roland
- 优先权： US19900555928 19900719
- 国际公布： WO1992001518 19920206
- 主分类号： B02C17
- IPC分类号： B02C17 ; B05D7 ; C09C1 ; C09C3 ; C09D7 ; C09D17
摘要：
A coating composition and method of coating for producing a coating containing at least 21-22% by volume titanium dioxide pigment for developing hiding on a suitable substrate, the coating composition having a pigment volume concentration (PVC) of up to a critical pigment volume concentration (CPVC), preferably a PVC of from about 25% to about 50-60% and more preferably from about 25% to about 45%, and a pigment system including an optional filler and a prime pigment comprising about 70-98% by volume titanium dioxide (TiO2), preferably a rutile form having a median particle size of about 0.2 microns, and about 2-30% by volume of an aluminum trihydrate (ATH) spacer/extender pigment having a similar median particle size and particle size distribution, preferably substantially the same as for the TiO2 pigment.