Claims
- 1. An improved charge director composition formed by a process comprising the steps of:
- dissolving a charge director in a non-polar solvent and a monomer species;
- initiating a polymerization reaction among molecules of said monomer species; and
- allowing said polymerization reaction to progress to completion to thereby associate the polymer thus formed with said charge director thereby producing said improved charge director composition.
- 2. A charge director composition as in claim 1 wherein the non-polar organic solvent is an isoparaffinic material having a specific gravity of 0.759@60/60.degree. F., a Saybolt Color +30, a viscosity of 1.72 cST@25.degree. C. and an auto-ignition temperature of 349.degree. C.
- 3. A charge director composition as in claim 1 wherein the charge director is lecithin.
- 4. A charge director composition as in claim 1 wherein the polymer is polyvinylpyrrolidone.
- 5. A charge director as in claim 1 wherein the polar monomer species comprises at least 5% by weight with respect to charge director solids.
- 6. A charge director as in claim 1 wherein the polar monomer species comprises 5% to 9% by weight with respect to charge director solids.
- 7. A charge director as in claim 1 wherein the polar monomer species comprises between 10% and 17% by weight with respect to charge director solids.
- 8. A charge director composition as in claim 1 wherein said solvent is a nonpolar organic compound or mixture of compounds.
Parent Case Info
This application is a continuation of application Ser. No. 07/306,155, filed Feb. 6, 1989, now abandoned, which is a continuation-in-part of application Ser. No. 07/061,979, filed Jun. 11, 1987, now issued as U.S. Pat. No. 4,842,974, which is a continuation in part of application Ser. No. 07/045,168 filed Apr. 24, 1987, now abandoned, which is a continuation in part of application Ser. No. 06/679,906, filed Dec. 10, 1984, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (5)
Number |
Date |
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0001103 |
Mar 1979 |
EPX |
0242806 |
Oct 1987 |
EPX |
1930783 |
Jan 1970 |
DEX |
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Apr 1970 |
FRX |
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Non-Patent Literature Citations (1)
Entry |
International Search Report from European Patent Office, mailed Jun. 1, 1990, in PCT/US90/00155 (based on U.S. Appl. Ser. No. 07/306,155). |
Continuations (1)
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Date |
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Parent |
306155 |
Feb 1989 |
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Continuation in Parts (3)
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Date |
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61979 |
Jun 1987 |
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Parent |
45168 |
Apr 1987 |
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Parent |
679906 |
Dec 1984 |
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