Invention Grant
US09574053B2 Alkali-soluble resin (ASR) shell epoxy RDP with divalent metal ions exhibiting improved powder redispersibility
有权
具有改善粉末再分散性的二价金属离子的碱溶性树脂(ASR)壳型环氧树脂RDP
- Patent Title: Alkali-soluble resin (ASR) shell epoxy RDP with divalent metal ions exhibiting improved powder redispersibility
- Patent Title (中): 具有改善粉末再分散性的二价金属离子的碱溶性树脂(ASR)壳型环氧树脂RDP
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Application No.: US14414265Application Date: 2013-07-10
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Publication No.: US09574053B2Publication Date: 2017-02-21
- Inventor: Liang Chen , Mark D. Westmeyer
- Applicant: Dow Global Technologies LLC , Rohm and Haas Company
- Applicant Address: US PA Philadelphia US MI Midland
- Assignee: Rohm and Haas Company,Dow Global Technologies LLC
- Current Assignee: Rohm and Haas Company,Dow Global Technologies LLC
- Current Assignee Address: US PA Philadelphia US MI Midland
- Agent Andrew Merriam
- International Application: PCT/US2013/049858 WO 20130710
- International Announcement: WO2014/011730 WO 20140116
- Main IPC: C08J3/12
- IPC: C08J3/12 ; C04B24/28 ; C08K3/24 ; C08K3/16 ; C08L63/00 ; C04B20/12 ; C04B28/02 ; C04B20/10 ; C04B24/26 ; C04B103/00

Abstract:
The present invention provides multilayer polymer redispersible powder (RDP) particles comprising a major proportion of from 50 to 90 wt. %, preferably, from 60 to 85 wt. %, based on total polymer solids, of epoxy resin resins having a calculated glass transition temperature (Tg) of from 0 to 40° C., a methacrylic acid containing alkali soluble polymer outer layer, and a divalent metal, such as zinc powder, having an aqueous pKa of 9.55 or more, or its acid salt having a pH of 7.0 or less, such as strong acid salts, e.g., chlorides, sulfates or phosphates, or organic acid salts, e.g., acetates, succinates and citrates, as well as to methods of making the same.
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