公开(公告)号：US3925297A

公开(公告)日：1975-12-09

申请号：US46563774

申请日：1974-04-30

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： SPRENGLING GERHARD R

IPC: C08J5/08 ,  C08K5/02 ,  H01B3/00 ,  H01B3/30 ,  H01B3/40 ,  H05K1/03 ,  C08L63/00

CPC classification number: H05K1/0373 ,  C08J5/08 ,  C08K5/02 ,  H01B3/002 ,  H01B3/006 ,  H01B3/30 ,  H01B3/40 ,  H05K2201/0209 ,  H05K2201/0251 ,  H05K2203/122 ,  C08L63/00

Abstract: A composition is disclosed of about 15 to about 70% organic resin, about 30 to about 85% nonconductive filler, and about 0.001% to about 1.0% of a surfactant having a perfluorinated chain at least 3 carbon atoms long at one end and a polar group at the other end, and having the property of lowering the surface energy of the resin. The composition is hardened into an article such as a printed circuit board. Unexpectedly, the presence of the surfactant in the articles decreases the drop in volume resistivity which occurs in high humidity. Also disclosed is a method of making the article by coating the filler with a solution of the surfactant, evaporating the solvent, immersing the filler in the resin, and hardening the resin.

公开(公告)号：US3405091A

公开(公告)日：1968-10-08

申请号：US35121264

申请日：1964-03-11

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： SPRENGLING GERHARD R ,  SASSANO DANIEL R ,  TRAPP ORLIN D ,  CHANG LEO S

IPC: C08G65/00 ,  C08G61/12 ,  C08G65/40 ,  C09D5/25 ,  H01B3/42

CPC classification number: C08G61/128 ,  H01B3/42

公开(公告)号：US3323962A

公开(公告)日：1967-06-06

申请号：US31890363

申请日：1963-10-25

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： SPRENGLING GERHARD R ,  CARGNEL LOUIS A

IPC: B29C53/56 ,  B29D23/00 ,  B32B27/00

CPC classification number: B29D23/001 ,  B29C53/56 ,  B32B27/00