Invention Grant
- Patent Title: Core-shell polymeric particles
- Patent Title (中): 核壳聚合物颗粒
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Application No.: US12456903Application Date: 2009-06-24
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Publication No.: US08445559B2Publication Date: 2013-05-21
- Inventor: James Keith Bardman
- Applicant: James Keith Bardman
- Applicant Address: US PA Philadelphia
- Assignee: Rohm and Haas Company
- Current Assignee: Rohm and Haas Company
- Current Assignee Address: US PA Philadelphia
- Agent Ron D. Bakule; Karl E. Stauss
- Main IPC: C08L33/26
- IPC: C08L33/26

Abstract:
A polymeric particle including a core, a first shell, and a second shell is provided: the core including, when dry, at least one void; the first shell polymer having a calculated glass transition temperature (“Tg”) greater than 50° C. and including, as polymerized units, from 15% to 60%, by weight based on the weight of the first shell, monomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, and mixtures thereof; and from 0.3% to 10%, by weight based on the weight of the first shell polymer, multiethylenically unsaturated monomer; and the second shell polymer having a Tg of from −60° C. to 50° C.; wherein the weight ratio of the second shell polymer to the total of all other structures of the polymeric particle is from 0.5:1 to 3:1. The particle provides binding functionality and, when dry, opacity and energy savings. A method for providing a polymeric particle and a method for providing opacity to a dry coating are also provided.
Public/Granted literature
- US20100010118A1 Core-shell polymeric particles Public/Granted day:2010-01-14
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