• 专利标题:   Manufacture of antistatic sheet used for manufacturing e.g. photomask storage case, involves forming antistatic layer using antistatic composition containing polymer resin and conductive polymer, on polymer substrate, forming adhesive layer, and forming another antistatic layer on adhesive layer.
  • 专利号:   KR2426963-B1
  • 发明人:   HAM S, PARK J H
  • 专利权人:   JI TECH CO LTD
  • 国际专利分类:   C08K003/04, C08L101/12, C09D175/04, C09D005/24, C09D007/61, G03F001/66
  • 专利详细信息:   KR2426963-B1 29 Jul 2022 C09D-005/24 202268 Pages: 12
  • 申请详细信息:   KR2426963-B1 KR016071 08 Feb 2022
  • 优先权号:   KR016071

▎ 摘  要

NOVELTY - Manufacture of an antistatic sheet involves forming an antistatic layer (L2) by applying an antistatic composition containing a polymer resin and a conductive polymer on a polymer substrate using a mesh roll, forming an adhesive layer by applying an adhesive on layer (L2), and forming an antistatic layer (L1) by applying and heat-treating a thermosetting antistatic composition comprising a carbon-based antistatic agent, polyol, and polyisocyanate, on the adhesive layer. The polymer substrate is made of acrylonitrile-butadiene-styrene resin, polymethylmethacrylate resin, impact-resistant polymethylmethacrylate resin, styrene-acrylonitrile resin, polyethylene terephthalate resin, polycarbonate resin, and/or methyl methacrylate-styrene resin. The polymer resin is at least one of acrylic resin, urethane-based resin, urethane-acrylic copolymer, ester-based resin, ether-based resin, amide-based resin, and epoxy-based resin, or the same resin as the resin used for polymer substrate. USE - Manufacture of antistatic sheet used for manufacturing photomask storage case (claimed). Can also be used for internal and external materials and packaging materials of semiconductor and electronic product. ADVANTAGE - The method produces antistatic sheet which is capable of exhibiting excellent antistatic function without performance reduction due to subsequent processing after manufacturing. The method improves or restores the antistatic function in an area where the antistatic property is reduced or lost by subsequent processing such as cutting. The antistatic sheet has very low surface resistivity, so that not only antistatic property is excellent, but also mechanical properties are excellent.