发明授权
- 专利标题: Surface enhancing coating for gypsum-containing floor underlayments
- 专利标题(中): 含石膏地板底层的表面增强涂层
-
申请号: US10755786申请日: 2004-01-12
-
公开(公告)号: US07276549B2公开(公告)日: 2007-10-02
- 发明人: Qingxia Liu , John W. Ellicson , David McDonald
- 申请人: Qingxia Liu , John W. Ellicson , David McDonald
- 申请人地址: US IL Chicago
- 专利权人: United States Gypsum Company
- 当前专利权人: United States Gypsum Company
- 当前专利权人地址: US IL Chicago
- 代理机构: Greer, Burns & Crain, Ltd.
- 代理商 David F. Janci; Michael Geoffrey
- 主分类号: C08K3/30
- IPC分类号: C08K3/30 ; C04B28/36
摘要:
A coating for preparing a floor underlayment to receive an adhesive includes a water-soluble, latex polymer, a defoamer and a dual-function surface enhancing agent. The surface enhancing agent includes a set accelerator that also functions to cross link the adhesive, hardening the surface of the underlayment using at least two mechanisms. One embodiment of the invention is a dry mixture that forms a coating when added to water. The dry mixture includes from about 10% to about 50% of the redispersible polymer by weight based on the mixture, from about 50% to about 90% of the surface enhancing agent and from about 0.15% to about 0.25% of the defoamer by weight based on the mixture. Other embodiments describe a liquid coating formed by adding from about 1 to about 8 pails water to 1 part of the dry mixture on a volumc basisby volume based on the mixture.