EP0097370A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Use of a composition for making circuit board substrates and electrical connectors
Assignee: BP Corp North America Inc
•
Filing: 1983-06-22
•
Granted: —
•
Expires: 2003-06-22
Abstract
Abstract Described herein is a composition useful for making circuit board substrates and electrical connectors comprising a blend of a poly(ether sulfone) and polysulfone. Also described herein is a circuit board substrate and an electrical connector made from such a blend.
Inventors
- 👤 James Elmer Harris
- 👤 Lloyd Mahlon Robeson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 10:51
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0333; C; C08; C08L; C08L71/00; C08L81/00; C08L81/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
A composition useful for making circuit board substrates and electrical connectors comprising from about 40 to about 90 weight percent of a poly(ether sulfone) of the following formula: and from about 10 to about 60 weight percent of a polysulfone of the following formula: wherein R is selected from 0 and S, each R 1 is independently hydrogen, a halogen atom, an alkyl group of from 1 to 4 carbon atoms and an alkoxy group of from 1 to 4 carbon atoms, a is an integer of 0 to 4 and R 2 is a bond between aromatic carbon atoms or a divalent connecting radical.
Claim 2
Dependent Claim
105 words
A composition useful for making circuit board substrates and electrical connectors comprising from about 40 to about 90 weight percent of a poly(ether sulfone) of the following formula: and from about 10 to about 60 weight percent of a polysulfone of the following formula: wherein R is selected from 0 and S, each R 1 is independently hydrogen, a halogen atom, an alkyl group of from 1 to 4 carbon atoms and an alkoxy group of from 1 to 4 carbon atoms, a is an integer of 0 to 4 and R 2 is a bond between aromatic carbon atoms or a divalent connecting radical.
Claim 3
Dependent Claim
18 words
A composition as defined in Claim 1 wherein the poly(ether sulfone) has repeating units of the fllowing formula:
Claim 4
Dependent Claim
27 words
A composition as defined in Claim 1 wherein the poly(ether sulfone) contains units of the formula: and wherein b is independently an integer of 1 to 3.
Claim 5
Dependent Claim
17 words
A composition as defined in Claim 3 wherein the poly(ether sulfone) contains units of the formula: and
Claim 6
Dependent Claim
25 words
A composition as defined in one or more of the Claims 3-4 or 4 wherein the ratio of (I) to (II) is greater than 1.
Claim 7
Dependent Claim
21 words
A composition as defined in one or more of the Claims 1-5 wherein the polysulfone has repeating units of the formula:
Claim 8
Dependent Claim
22 words
A composition as defined in one or more of the Claims 1-6 which contains a reinforcing fiber and/or a particulate inorganic filler.
Claim 9
Dependent Claim
17 words
A composition as defined in Claim 7 wherein the fiber is fiberglass and/or the filler is wollastonite.
Claim 10
Dependent Claim
98 words
A circuit board substrate comprising from about 40 to about 90 weight percent of a poly(ether sulfone) of the following formula: and from about 10 to about 60 weight percent of a polysulfone of the following formula: wherein R is selected from O and S and each R 1 independently hydrogen, a halogen atom, an alkyl group of from 1 to 4 carbon atoms and an alkoxy group of from 1 to 4 carbon atoms, a is an integer of 0 to 4 and R 2 is a bond between aromatic carbon atoms or a divalent connecting radical.
Claim 11
Dependent Claim
98 words
A circuit board substrate comprising from about 40 to about 90 weight percent of a poly(ether sulfone) of the following formula: and from about 10 to about 60 weight percent of a polysulfone of the following formula: wherein R is selected from O and S and each R 1 independently hydrogen, a halogen atom, an alkyl group of from 1 to 4 carbon atoms and an alkoxy group of from 1 to 4 carbon atoms, a is an integer of 0 to 4 and R 2 is a bond between aromatic carbon atoms or a divalent connecting radical.
Claim 12
Dependent Claim
14 words
The circuit board of Claim 9 having a copper electrical circuit firmly adhered thereto.
References Cited (Backward Citations)
FR2341620A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.