US4113644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected glassy phosphate detergent additive
Assignee: Individual
•
Filing: 1975-11-11
•
Granted: 1978-09-12
•
Expires: 1995-11-11
Abstract
Abstract Substantially anhydrous glassy phosphate detergent additives are disclosed comprising from 1% to 90% by weight of a glassy phosphate and 10% to 99% by weight of a protective agent being a solid organic material having a melting point ranging from 110 DEG F to 200 DEG F. Preferably the solid organic material has a low hygroscopicity in order to minimize exposure of the glassy phosphate to moisture during storage.
Inventors
- 👤 William R. Ashcraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A granular detergent consisting essentially of: (A) 1 to 15 parts by weight of a detergent additive comprising: (I) 1% to 90% by weight of a glassy phosphate having a general formula M.sub.2y+2 P.sub.2y O.sub.6y+1 wherein M is an alkali metal and y is from about 7 to about 12; and (II) 10% to 99% by weight of a polyethylene glycol having a molecular weight from about 1,400 to about 30,000; and (B) 85 to 99 parts by weight of detergent granules comprising: (I) 2% to 35% by weight of a surface-active agent selected from the group consisting of anionic, nonionic, ampholytic, and zwitterionic surface-active materials; and (II) 10% to 65% by weight of a detergent builder.
Claim 2
Dependent Claim
117 words
A granular detergent consisting essentially of: (A) 1 to 15 parts by weight of a detergent additive comprising: (I) 1% to 90% by weight of a glassy phosphate having a general formula M.sub.2y+2 P.sub.2y O.sub.6y+1 wherein M is an alkali metal and y is from about 7 to about 12; and (II) 10% to 99% by weight of a polyethylene glycol having a molecular weight from about 1,400 to about 30,000; and (B) 85 to 99 parts by weight of detergent granules comprising: (I) 2% to 35% by weight of a surface-active agent selected from the group consisting of anionic, nonionic, ampholytic, and zwitterionic surface-active materials; and (II) 10% to 65% by weight of a detergent builder.
Claim 3
Dependent Claim
32 words
A granular detergent according to claim 1 wherein said detergent builder is a water-soluble builder salt selected from the group consisting of alkali metal and ammonium tripolyphosphates, pyrophosphates, carbonates, silicates, and nitrilotriacetates.
Claim 4
Dependent Claim
64 words
A granular detergent according to claim 1 wherein said surface-active agent is selected from the group consisting of C 10 -C 14 linear alkyl benzene sulfonates, C 12 -C 20 linear alkyl sulfates; and condensation products thereof with from 1 to 4 ethylene oxide units, and C 12 -C 16 aliphatic alcohols condensed with an average of from 4 to 7 ethylene oxide groups.
Claim 5
Dependent Claim
19 words
A granular detergent according to claim 1 wherein said glassy phosphate has an empirical formula of Na.sub.23 P.sub.21 O.sub.64.
Claim 6
Dependent Claim
22 words
A granular detergent according to claim 1 wherein said protective agent is polyethylene glycol having a molecular weight from 4,000 to 30,000.
Claim 7
Dependent Claim
19 words
A granular detergent according to claim 5 wherein said polyethylene glycol has a molecular weight of 4,000 to 8,000.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |