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Invention Publication
CN110325558A 吸水性树脂、土壤保水材料以及农业园艺材料 无效 - 撤回

  • Patent Title: 吸水性树脂、土壤保水材料以及农业园艺材料
  • Patent Title (English): WATER-ABSORBENT RESIN, SOIL WATER-RETAINING MATERIAL, AND AGRICULTURAL/HORTICULTURAL MATERIAL
  • Application No.: CN201880013486.9
    Application Date: 2018-03-02
  • Publication No.: CN110325558A
    Publication Date: 2019-10-11
  • Inventor: 千叶实季人 , 小野田裕一
  • Applicant: 住友精化株式会社
  • Applicant Address: 日本国兵库县加古郡播磨町宫西346番地之1
  • Assignee: 住友精化株式会社
  • Current Assignee: 住友精化株式会社
  • Current Assignee Address: 日本国兵库县加古郡播磨町宫西346番地之1
  • Agency: 北京汇思诚业知识产权代理有限公司
  • Agent 龚敏; 王刚
  • Priority: 2017-038980 2017.03.02 JP
  • International Application: PCT/JP2018/007960 2018.03.02
  • International Announcement: WO2018/159801 JA 2018.09.07
  • Date entered country: 2019-08-22
  • Main IPC: C08F20/06
  • IPC: C08F20/06 ;  C08J3/24
吸水性树脂、土壤保水材料以及农业园艺材料
Abstract:
本发明提供一种兼备高吸水性和高吐水性能的吸水性树脂。本发明的吸水性树脂，是由水溶性烯属不饱和单体的聚合物构成的树脂，通过X射线计算机断层成像法观察所述吸水性树脂的截面图像时，由下式(1)算出的所述截面图像中的空洞部分的面积比例(空洞面积率)为5％以上。空洞面积率[％]＝{吸水性树脂的空洞部分的总截面面积(B)/(吸水性树脂的树脂部分的总截面面积(A)+吸水性树脂的空洞部分的总截面面积(B))}×100…(I)。
Abstract(English):

Provided is a water-absorbent resin that is highly water-absorbent but is also highly capable of discharging water. This water-absorbent resin is configured from a polymer of water-soluble ethylenic unsaturated monomers. When a cross-sectional image of the water-absorbent resin is observed by x-ray computed tomography, the fraction of the area of the cross-sectional image that is hollow portions (the hollow area ratio of the cross-sectional image), as calculated on the basis of formula (I), is at least 5%. (I) Hollow area ratio [%]={total cross-sectional area (B) of hollow portions of the water-absorbent resin/(total cross-sectional area (A) of resin portions of the water-absorbent resin + total cross-sectional area (B) of hollow portions of the water-absorbent resin)}*100%.

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