IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0316725
(1994-10-03)
|
발명자
/ 주소 |
- Kawachi Shinji (Shiga-ken JPX) Sato Yoshifumi (Shiga-ken JPX) Nishimura Yasuhiro (Shiga-ken JPX)
|
출원인 / 주소 |
- Nippon Electric Glass Co., Ltd. (Otsu JPX 03)
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
6 |
초록
▼
Glass bubbles for use as fillers in a plastic resin substrate of an electrical printed circuit board are light in weight, low in density, and small in alkali amount leached sufficiently to insure electrical insulation resistance of the substrate, and consist essentially of, by weight, SiO2 40.0-60.0
Glass bubbles for use as fillers in a plastic resin substrate of an electrical printed circuit board are light in weight, low in density, and small in alkali amount leached sufficiently to insure electrical insulation resistance of the substrate, and consist essentially of, by weight, SiO2 40.0-60.0%, Al2O3 5.0-22.0%, B2O3 1.0-15.0%, CaO 10.0-30.0%, BaO 0-15.0%, MgO 0-10.0%, ZnO 0-10.0%, SrO 0-10.0%, Na2O+K2O+Li2 O 0-1.9%, As2O3+Sb2O3 0-1.54, V2O5 0-10.0%, TiO2 0-10.0%, and SO3 0.05-1.7%.
대표청구항
▼
Glass bubbles for use in fillers for plastic resin articles and made by heating bubble-forming powders of a composition containing SO3, said glass bubbles consisting essentially of, by weight, SiO2 40.0-60.0%, Al2O3 5.0-22.0%, B2O3 1.0-15.0%, CaO 10.0-30.0%, BaO 0-15.0%, MgO 0-10.0%, ZnO 0-10.0%, Sr
Glass bubbles for use in fillers for plastic resin articles and made by heating bubble-forming powders of a composition containing SO3, said glass bubbles consisting essentially of, by weight, SiO2 40.0-60.0%, Al2O3 5.0-22.0%, B2O3 1.0-15.0%, CaO 10.0-30.0%, BaO 0-15.0%, MgO 0-10.0%, ZnO 0-10.0%, SrO 0-10.0%, Na2O+K2O+Li2O 0-1.9%, As2O3+Sb2O3 0-1.5%, V2O5 0-10.0%, TiO2 0-10.0%, and SO3 0.05-1.7%.
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