Main > ELECTRICAL > Circuit > Printed Circuit > Board > Wiring Board > Prepreg > Glass Fabric. Poly(Imide)

Product USA. N

PATENT ASSIGNEE'S COUNTRY USA
UPDATE 11.99
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS In a method of mfg printed wiring board assembly; comprising making a substrate preform intermediate material having glass fabric reinforcement impregnated with MeOH soln. comprising
- 5-Norbornene-1,2-dicarboxylic acid anhydride di-Me es
ter (1 mole)
- 3,3',4,4'-Benzophenone tetracarboxylic acid di-Me ester
(1.0356 mole)
- 3,4'-Oxydianiline (1.5356 moles)
Inducing prolonged condensation reaction at first T (I)
- Inducing crosslinking reaction in vacuum at T > (I)
PATENT PHOTOCOPY Available on request

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