Claims
- 1. A composition of matter consisting of in parts by weight:
- Ceramic particulate: 50-75
- Polyvinylbutyral: 2-8
- Dipropylene Glycol Benzoate: 0.5-5
- Methanol: 4-30
- Methylisobutyl ketone: 4-30, and an
- Ionic Species: 1-10,000 ppm,
- said ionic species being selected from the group consisting of boron and phosphorous compounds in their ionic form, said composition of matter capable of achieving a percent compressability of greater than 8 percent.
- 2. The composition of claim 1, wherein said ceramic particulate is glass or alumina powder of average particle size 0.5-5.0 micron.
- 3. The composition of claim 1, wherein said phosphorus and boron is part of a glass composition and can be leached into binder solution of polyvinylbutyral, dipropylene glycol dibenzoate, methanol and methylisobutyl ketone.
- 4. The composition of claim 1, wherein said ionic species is boron.
- 5. The composition of claim 4, wherein said boron is in the form of boron anhydride or boric acid.
- 6. The composition of claim 5, wherein said boron is in an amount ranging from about 10 to 500 ppm.
- 7. The composition of claim 1, wherein said ionic species is phosphorus.
- 8. The composition of claim 7, wherein said phosphorus is in the form of P.sub.2 O.sub.5.
- 9. The composition of claim 8, wherein said phosphorus is in an amount ranging from about 10 to 500 ppm.
- 10. A ceramic greensheet formed from the composition of claim 1.
- 11. A laminated, multilevel ceramic green sheet structure having electrical conductive pattern therein, made from the composition of claim 1.
Parent Case Info
This application is a continuation of application Ser. No. 07/997,807, filed Dec. 29, 1992, now abandoned.
US Referenced Citations (10)
Non-Patent Literature Citations (2)
Entry |
IBM Technical Disclosure Bulletin, vol. 26, No. 6, Nov. 1983, R. W. Nufer, "Improved Green Sheet", pp. 2728-2729. |
Nufer 1992, "Ceramic Greensheet Technology for Glass-Ceramic/Copper Multilevel Substrates", Electronic Components and Technology Conference, San Diego, Calif. 42: 673-677. |
Continuations (1)
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Number |
Date |
Country |
Parent |
997807 |
Dec 1992 |
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