会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明专利
    • METHOD FOR COATING CARRIER
    • JPH1115207A
    • 1999-01-22
    • JP17404198
    • 1998-06-05
    • XEROX CORP
    • CREATURA JOHN AK DEREK HENDERSONBERNARD A KELLY
    • G03G9/113
    • PROBLEM TO BE SOLVED: To efficiently obtain resin coated carrier core particles at a low cost in the form of low porosity mechanically strong coated fine particles while using high porosity brittle core particles by blending 1st coated fine particles with a 2nd coating resin or resin Mixture and heating the blend to prepare 2nd coated fine particles or fine particles coated twice. SOLUTION: Core particles are blended with a 1st coating resin or resin mixture to prepare a 1st blend and the 1st blend is heated to prepare 1st coated particles. The 1st coated particles are blended with a 2nd coating resin or resin mixture to prepare a 2nd blend and the 2nd blend is heated to prepare 2nd coated particles or particles coated twice. The 1st coating resin is, e.g. a crosslinkable thermosetting resin such as polyurethane, polyester or a mixture of them. The 2nd coating resin is a polymer capable of imparting mechanical stability so as to make the core particles mechanically strong or a mixture of such polymers.