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    • 10. 发明授权
    • Gelling agent for alkaline battery and alkaline battery
    • 碱性电池和碱性电池的胶凝剂
    • US07579115B2
    • 2009-08-25
    • US11631651
    • 2005-07-06
    • Kazuya OhtaniTakeaki Yamaguchi
    • Kazuya OhtaniTakeaki Yamaguchi
    • H01M6/14H01M10/26
    • H01M6/22H01M4/12H01M4/244H01M4/381H01M4/40H01M4/42H01M6/06H01M2004/023H01M2300/0085
    • A gelling agent for use in an alkaline battery comprises a cross-linked polymer (A) formed with a (meth)acrylic acid (salt) as a principal constituent monomer unit, wherein the gelling agent allows an obtained gel (GA) to have a viscosity ratio (N1/N60), determined as follows, of 0.7 to 1.3, and includes components soluble in 37 wt % aqueous solution of potassium hydroxide that account for 30 wt % or less of the gelling agent: the viscosity ratio (N1/N60) of the gel (GA) is determined by preparing the gel (GA) by stirring 100 parts by weight of 37 wt % aqueous solution of potassium hydroxide, 2 parts by weight of the cross-linked polymer (A), and 200 parts by weight of zinc powder at 40° C. so as to be mixed uniformly, and measuring a viscosity (40° C., N1) of the gel (GA) after being left to stand at the same temperature for one day, and a viscosity (40° C., N60) of the gel (GA) after being left to stand at the same temperature for sixty days, according to JIS K7117-1: 1999. The foregoing gelling agent and an alkaline battery using the gelling agent exhibit excellent impact resistance and excellent long-term retention of discharge characteristics.
    • 用于碱性电池的胶凝剂包括由(甲基)丙烯酸(盐)作为主要构成单体单元形成的交联聚合物(A),其中胶凝剂允许获得的凝胶(GA)具有 粘度比(N1 / N60)为0.7〜1.3,包含可溶于37重量%的氢氧化钾水溶液的成分占胶凝剂的30重量%以下的成分:粘度比(N1 / N60 )通过将100重量份的37重量%的氢氧化钾水溶液,2重量份的交联聚合物(A)和200重量份的交联聚合物(A)搅拌,制备凝胶(GA)来测定凝胶 重量的锌粉在40℃下均匀混合,并在相同温度下静置1天后测定凝胶(GA)的粘度(40℃,N1),粘度 根据JIS K7117-1:1999,在相同温度下放置60天后,将凝胶(GA)(40℃,N60) 使用胶凝剂的胶凝剂和碱性电池表现出优异的耐冲击性和优异的放电特性的长期保持性。