US4089699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment preparation
Assignee: Novartis Corp
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Filing: 1975-10-21
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Granted: 1978-05-16
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Expires: 1995-10-21
Abstract
Abstract A pigment composition comprising pigment and at least 5% by weight based on the weight of composition of a complex formed from one or more non ionic polyether surfactants based on ethylene oxide and a polymeric carboxylic acid having a molecular weight of at least 1500.
Inventors
- 👤 John Bryce Blackburn
- 👤 Arnold William Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:10
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0013; C09B67/006; C09D; C09D17/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
48 words
A pigment composition comprising pigment having deposited thereon at least 5% by weight based on the weight of composition of a complex formed from one or more non ionic polyether surfactants based on ethylene oxide and a polymeric carboxylic acid having a molecular weight of at least 1500.
Claim 2
Dependent Claim
48 words
A pigment composition comprising pigment having deposited thereon at least 5% by weight based on the weight of composition of a complex formed from one or more non ionic polyether surfactants based on ethylene oxide and a polymeric carboxylic acid having a molecular weight of at least 1500.
Claim 3
Dependent Claim
32 words
A composition as claimed in claim 1 which comprises from 70 to 95% by weight of pigment and from 30 to 5% by weight of complex, based on the weight of composition.
Claim 4
Dependent Claim
21 words
A composition as claimed in claim 1 in which the non-ionic surfactant has a molecular weight of from 350 to 8,000,000.
Claim 5
Dependent Claim
32 words
A composition as claimed in claim 3 in which the non-ionic surfactant is poly(ethylene oxide) having an average molecular weight from 600 to 1,000,000, a polyethyleneoxylated alkyl phenol, alcohol or carboxylic acid.
Claim 6
Dependent Claim
29 words
A composition as claimed in claim 3 in which the non-ionic surfactant is a copolymer of ethylene oxide and propylene oxide having a molecular weight of at least 600.
Claim 7
Dependent Claim
16 words
A composition as claimed in claim 3 in which the non-ionic surfactant is ethoxylated nonyl phenol.
Claim 8
Dependent Claim
29 words
A composition as claimed in claim 3 in which the non-ionic surfactant is a mixture of ethoxylated nonyl phenol with a block copolymer of ethylene oxide and propylene oxide.
Claim 9
Dependent Claim
42 words
A composition as claimed in claim 1 in which the polymeric carboxylic acid is polymaleic acid, a copolymer of methacrylic acid or acrylic acid with dodecyl methacrylate, a copolymer of ethylene and maleic anhydride or a copolymer of diisobutylene and maleic anhydride.
Claim 10
Dependent Claim
19 words
A composition as claimed in claim 1 in which the polymeric carboxylic acid is polyacrylic acid or polymethacrylic acid.
Claim 11
Dependent Claim
94 words
A process for the production of a pigment preparation which comprises treating a dispersion of a pigment with at least 5% by weight based on the weight of the pigment of a combination of a non-ionic polyether surfactant based on ethylene oxide and a polymeric carboxylic acid or its salt having a molecular weight of at least 1500 and afterwards reducing the pH to 4 or below, whereby a complex precipitate is formed between the non-ionic surfactant and the polymeric carboxylic acid which is deposited on the pigment, and separating the pigment thus obtained.
Claim 12
Dependent Claim
94 words
A process for the production of a pigment preparation which comprises treating a dispersion of a pigment with at least 5% by weight based on the weight of the pigment of a combination of a non-ionic polyether surfactant based on ethylene oxide and a polymeric carboxylic acid or its salt having a molecular weight of at least 1500 and afterwards reducing the pH to 4 or below, whereby a complex precipitate is formed between the non-ionic surfactant and the polymeric carboxylic acid which is deposited on the pigment, and separating the pigment thus obtained.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |