• 专利标题:   Shop primer used for coating weld beads, comprises component containing alcohol-soluble resin, rheological additive, silane coupling agent filler, zinc powder and solvent, and component containing ethyl polysilicate and ethanol selected from phosphate, tripolyphosphate, borate and silicate.
  • 专利号:   CN114891423-A
  • 发明人:   LIU H, ZHAO Z, MENG K, AO G
  • 专利权人:   BEIJING ORIENTAL YUHONG WATERPROOF TECH
  • 国际专利分类:   C09D167/08, C09D005/00, C09D005/10, C09D007/61, C09D007/63
  • 专利详细信息:   CN114891423-A 12 Aug 2022 C09D-167/08 202288 Chinese
  • 申请详细信息:   CN114891423-A CN10240538 10 Mar 2022
  • 优先权号:   CN10240538

▎ 摘  要

NOVELTY - A shop primer comprises a component A containing alcohol-soluble resin, rheological additive, silane coupling agent, filler, zinc powder and solvent, and a component B containing ethyl polysilicate and ethanol. The filler present in component A, comprises nano ferrophosphorus powder, carbon nano tube, graphene and a functional antirust filler selected from phosphate, tripolyphosphate, borate and/or silicate. USE - Shop primer is used for coating weld beads, during welding process. ADVANTAGE - The shop primer when used in welding process, enables to reduce zinc fog and the number of air bubbles and micro-holes in the weld bead. The coating formed using the shop primer, has enhanced corrosion resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of shop primer which involves: a) preparing component A by mixing and dispersing alcohol-soluble resin, solvent and optional dispersant, followed by adding a rheological additive which is then mixed and dispersed, then adding optional defoaming agent and silane coupling agent, mixing and dispersing it, then adding filler and zinc powder, mixing and dispersing it; b) preparing component B by uniformly mixing ethyl polysilicate and ethanol. method of workshop primer.