US3607335A
Expired / Lapsed
US
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Pigment formulations
Assignee: BASF SE
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Filing: 1968-11-01
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Granted: 1971-09-21
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Expires: 1988-11-01
Abstract
Abstract Pigment formulations which contain the pigment dye finally dispersed in diglycol terephthalates or linear oligomers of terephthalic acid and ethylene glycol are outstandingly suitable for mass coloration of thermoplastics.
Inventors
- 👤 Horst Belde
- 👤 Ewald Daubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:13
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/006; C08; C08J; C08J3/00; C08J3/20; C08J3/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
22 words
A solid pulverulent pigment formulation as claimed in claim 1 which further contains: c. up to 20% by weight of a surfactant.
Claim 2
Dependent Claim
23 words
A solid pulverulent pigment formulation as claimed in claim 2 wherein component (b) has a degree of condensation of from 1 to 3.
Claim 3
Dependent Claim
37 words
A solid pulverulent pigment formulation as claimed in claim 1 containing 20% to 60% by weight of component (a), 40% to 80% by weight of component (b) and 0.5% to 20% by weight of a surfactant (c).
Claim 4
Dependent Claim
23 words
A solid pulverulent pigment formulation as claimed in claim 4 wherein component (b) has a degree of condensation of from 1 to 3.
Claim 5
Dependent Claim
119 words
A solid pulverulent pigment formulation containing: a. 15% to 75% by weight of a pigment dye; b. 25% to 85% by weight of a condensate mixture prepared by transesterification of dimethyl terephthalate with ethylene glycol and containing less than 0.01% by weight of dimethyl terephthalate, 2% to 7% percent by weight of ethylene glycol, 0.3% to 1.5% by weight of methyl glycol terephthalate, 9% to 27% by weight of diglycol terephthalate and 65% to 85% by weight of linear oligomers of terephthalic acid and ethylene glycol, said condensate mixture having a saponification number of from 400 to 550 and a degree of condensation not exceeding a value of 10; and c. 0% to 20% by weight of a surfactant.
Claim 6
Dependent Claim
34 words
A solid pulverulent pigment formulation as claimed in claim 6 containing as component (c) about 0.5% to 20% by weight of a polyethylene oxide having a molecular weight of from 3,000 to 5, 000.
Claim 7
Dependent Claim
25 words
A solid pulverulent pigment formulation as claimed in claim 6 wherein the condensate mixture (b) has a degree of condensation of from 1 to 3.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |