US4013577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy duty dry biodegradable detergent composition
Assignee: Colgate Palmolive Co
•
Filing: 1972-04-14
•
Granted: 1977-03-22
•
Expires: 1992-04-14
Abstract
Abstract A biodegradable heavy duty dry detergent composition including a higher fatty alkyl polyethoxy sulfate and a nonphosphate builder, the composition exhibiting outstanding hard water resistance. A preferred composition includes a compound of the formula RO(C 2 H 4 O) 3 SO 3 Na wherein R is a mixed fatty alkyl of from 12-15 carbon atoms and a non-phosphate builder selected from carbonates, silicates, citrates, oxydiacetates, polycarboxylates, etc.
Inventors
- 👤 Harold Eugene Wixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:04
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/29; C11D3/00; C11D3/02; C11D3/04; C11D3/08; C11D3/10; C11D3/16; C11D3/20; C11D3/2075
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
140 words
A heavy duty dry detergent composition devoid of phosphate and nitrogenous builders and which consists essentially of about 8 to about 30% of water-soluble anionic synthetic detergent salt of the formula RO(C 2 H 4 O) n SO 3 M, wherein R is a substantially straight chain fatty alkyl of from 10 to 20 carbon atoms, n is a number from 2 to 6, n being from about one-fifth to one-third the number of carbon atoms in R, and M is a salt-forming cation; about 30 to 70% by weight of a water-soluble builder salt selected from the group consisting of silicates, carbonates, oxydiacetates citrates and mixtures thereof; about 0 to 5% of an alkali metal soap; and about 10 to 50% by weight of a filler selected from the group consisting of sodium chloride, sodium sulfate and sodium bisulfate.
Claim 2
Dependent Claim
140 words
A heavy duty dry detergent composition devoid of phosphate and nitrogenous builders and which consists essentially of about 8 to about 30% of water-soluble anionic synthetic detergent salt of the formula RO(C 2 H 4 O) n SO 3 M, wherein R is a substantially straight chain fatty alkyl of from 10 to 20 carbon atoms, n is a number from 2 to 6, n being from about one-fifth to one-third the number of carbon atoms in R, and M is a salt-forming cation; about 30 to 70% by weight of a water-soluble builder salt selected from the group consisting of silicates, carbonates, oxydiacetates citrates and mixtures thereof; about 0 to 5% of an alkali metal soap; and about 10 to 50% by weight of a filler selected from the group consisting of sodium chloride, sodium sulfate and sodium bisulfate.
Claim 3
Dependent Claim
34 words
The heavy duty dry detergent composition of claim 1 wherein M is selected from the group consisting of alkali metal, ammonium, lower alkylamino and lower alkanolamino, and wherein the builder salt is a citrate.
Claim 4
Dependent Claim
59 words
The heavy duty dry detergent composition of claim 2 which contains from 10 to 20% of water-soluble anionic synthetic detergent salt of the formula RO(C 2 H 4 O) n SO 3 M, wherein R is a straight chain alkyl of from 12 to 15 carbon atoms, n is from 2 to 4, and M is an alkali metal.
Claim 5
Dependent Claim
42 words
The heavy duty dry detergent composition of claim 3 wherein R is a mixture of straight chain alkyls of from 12 to 15 carbon atoms terminally joined through the oxygen to the polyethoxy chain, n is about 3, and M is sodium.
Claim 6
Dependent Claim
34 words
The heavy duty dry detergent composition of claim 3 further containing from 0.4 to 1% of an optical brightener system comprising a major proportion of cotton brightener and a minor proportion of polyester-amide brightener.
Claim 7
Dependent Claim
31 words
The heavy duty dry detergent composition of claim 4 wherein said mixed alkyl contains at least 10% of each chain length and no more than 50% of any one chain length.
Claim 8
Dependent Claim
16 words
The heavy duty dry detergent composition of claim 2 wherein said citrate is sodium citrate dihydrate.
Claim 9
Dependent Claim
48 words
The heavy duty dry detergent composition of claim 2 further containing from 0.5 to 5% of a water-soluble alkali metal soap, said composition being essentially non-foaming and leaving no more than a trace of foam in rinse water employed to rinse out detergent and dirt from washed laundry.
Claim 10
Dependent Claim
34 words
The heavy duty dry detergent composition of claim 1 wherein said builder is sodium or potassium silicate having an Na 2 O:SiO 2 or K 2 O:SiO 2 ratio of from 1:1.5 to 1:2.5.
Claim 11
Dependent Claim
27 words
The heavy duty dry detergent composition of claim 1 further containing up to 30% of said anionic detergent of a C 10 -C 18 alkyl benzene sulfonate.
Claim 12
Dependent Claim
19 words
The heavy duty dry detergent composition of claim 1 having a pH in water of from 7 to 9.
Claim 13
Dependent Claim
30 words
The heavy duty dry detergent composition of claim 1 wherein said builder is a mixture of soda ash and sodium silicate having an Na 2 O:SiO 2 ratio of 1:2.35.
Claim 14
Dependent Claim
18 words
The heavy duty dry detergent composition of claim 1 further containing from 0.2 to 2% of fluorescent brightener.
Claim 15
Dependent Claim
30 words
The heavy duty dry detergent composition of claim 13 wherein said brightener comprises from about 51 to 90% cotton brightener, the balance being one or more of polyamide, polyester brightener.
Claim 16
Dependent Claim
18 words
The heavy duty composition of claim 13 wherein said brightener is an amino coumarin or diphenyl pyrazoline derivative.
Claim 17
Dependent Claim
26 words
The heavy duty detergent composition of claim 13 wherein said brightener is the reaction product of cyanuric chloride and the disodium salt of diaminostilbene disulfonic acid.
Claim 18
Dependent Claim
26 words
The heavy duty detergent composition of claim 13 wherein said brightener is a benzidene sulfone disulfonic acid, a napthotriazolyl stilbene sulfonic acid or a benzimadazolyl derivative.
Claim 19
Dependent Claim
15 words
The heavy duty dry detergent composition of claim 14 wherein said brighteners are chlorine stable.
Claim 20
Dependent Claim
39 words
A process for laundering textiles which comprises contacting said textiles with the composition of claim 1 at a temperature of from 10° to 90° C, the concentration of said detergent being from 1 to 2.5 g/l of wash solution.
References Cited (Backward Citations)
US2264103A
Cited
US2941950A
Cited
US3332876A
Cited
US3523902A
Cited
GB1189114A
Cited
US3676338A
Cited
US3590001A
Cited
US3600318A
Cited
US3844982A
Cited
US3629121A
Cited
US3700599A
Cited
US3707503A
Cited
US3892680A
Cited
US3755203A
Cited
US3741911A
Cited
US3758419A
Cited
US3740339A
Cited
US3743610A
Cited
US3755201A
Cited
US3748093A
Cited
US3749676A
Cited
US3849327A
Cited
US3725290A
Cited
US3915903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |