Patent US2690434A successfully refreshed from Google Patents.
Patent US3956157A successfully refreshed from Google Patents.
US3956157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent and bleaching agent comprising sodium perborate and sodium .alpha.β-glucoheptonate
Assignee: WR Grace and Co
•
Filing: 1974-07-19
•
Granted: 1976-05-11
•
Expires: 1994-07-19
Abstract
Abstract An aqueous solution useful as a detergent and bleach is prepared by dissolving an admixture of sodium perborate, sodium alpha -glucoheptonate, and sodium beta -glucoheptonate in water; the water can be evaporated to form a free flowing particulate solid useful as a detergent and bleach.
Inventors
- 👤 Nelson S. Marans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:50
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3947
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
A substantially free flowing particulate solid composition useful as a detergent and bleach prepared by a process consisting essentially of: a. admixing; i. a first mixture consisting essentially of substantially equal molar amounts of sodium α-glucoheptonate and sodium β-glucoheptonate; ii. sodium perborate; and iii. an amount of water effective for dissolving the sodium glucoheptonates and the sodium perborate to form a second mixture; b. agitating the second mixture to dissolve the glucoheptonates and the sodium perborate to form the aqueous solution; and c. evaporating water from the aqueous solution to form the substantially free flowing particulate solid composition.
Claim 2
Dependent Claim
98 words
A substantially free flowing particulate solid composition useful as a detergent and bleach prepared by a process consisting essentially of: a. admixing; i. a first mixture consisting essentially of substantially equal molar amounts of sodium α-glucoheptonate and sodium β-glucoheptonate; ii. sodium perborate; and iii. an amount of water effective for dissolving the sodium glucoheptonates and the sodium perborate to form a second mixture; b. agitating the second mixture to dissolve the glucoheptonates and the sodium perborate to form the aqueous solution; and c. evaporating water from the aqueous solution to form the substantially free flowing particulate solid composition.
Claim 3
Dependent Claim
19 words
The composition of claim 1 in which the weight ratio of the sodium perborate to the glucoheptonates is 1:0.1-10.
Claim 4
Dependent Claim
21 words
The composition of claim 1 in which the weight ratio of sodium perborate to water in the aqueous solution is 1:10-200.
Claim 5
Dependent Claim
18 words
The composition of claim 1 in which the glucoheptonates and the sodium perborate are dissolved in water 10°-80°C.
Claim 6
Dependent Claim
16 words
The composition of claim 1 in which water is evaporated from the aqueous solution at 25°-110°C.
Claim 7
Dependent Claim
19 words
The composition of claim 1 in which water is evaporated from the aqueous solution at 2-760 Torr and 25°-100°C.
Claim 8
Dependent Claim
18 words
The composition of claim 2 in which the weight ratio of sodium perborate to the glucoheptonates is 1:0.5-3.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |