Patent US4073735A successfully refreshed from Google Patents.
US4073735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rinse cycle fabric softener
Assignee: Colgate Palmolive Co
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Filing: 1976-02-19
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Granted: 1978-02-14
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Expires: 1996-02-19
Abstract
Abstract A rinse cycle fabric softening composition effective in reducing fabric discoloration consisting essentially of a cationic softening agent, preferably a quaternary ammonium softener, and an alkali metal silicate in the weight ratio of 4:3 to 4:1 of cationic:silicate.
Inventors
- 👤 Pallassana Ramachandran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:42
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D1/00; C11D1/38; C11D1/62; C11D3/02; C11D3/04; C11D3/08; D; D06; D06M; D06M11/00; D06M11/77; D06M11/79; D06M13/00; D06M13/322; D06M13/46
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
48 words
A fabric-softening composition especially effective in the rinse cycle for reducing fabric discoloration consisting essentially of cationic softener and alkali metal silicate in the weight ratio of 4:3 to 4:1 of cationic:silicate, said silicate having an Na 2 O to SiO 2 ratio of from 1:1.6 to 1:3.2.
Claim 2
Dependent Claim
48 words
A fabric-softening composition especially effective in the rinse cycle for reducing fabric discoloration consisting essentially of cationic softener and alkali metal silicate in the weight ratio of 4:3 to 4:1 of cationic:silicate, said silicate having an Na 2 O to SiO 2 ratio of from 1:1.6 to 1:3.2.
Claim 3
Dependent Claim
30 words
An aqueous solution of a fabric-softening composition of claim 1 and comprising from about 1-25% of cationic softener and about 1-20% of alkali metal silicate salt and the remainder water.
Claim 4
Dependent Claim
25 words
A fabric-softening composition of claim 2, wherein the cationic softener is a di-C 8 to C 22 di-C 1 to C 4 quaternary ammonium compound.
Claim 5
Dependent Claim
17 words
A fabric-softening composition of claim 3, wherein the cationic quaternary softener is distearyl dimethyl quaternary ammonium chloride.
Claim 6
Dependent Claim
14 words
A fabric-softening composition of claim 2 wherein the cationic softener is an imidazolinium compound.
Claim 7
Dependent Claim
16 words
A fabric softening composition of claim 2 wherein the cationic softener is tallow alkyl propylene diamine.
Claim 8
Dependent Claim
13 words
A fabric-softening composition of claim 2, wherein the silicate salt is sodium silicate.
Claim 9
Dependent Claim
28 words
A method of softening fabrics which comprises applying to said fabrics in an aqueous bath, an amount sufficient to soften the fabric, of the composition of claim 2.
Claim 10
Dependent Claim
20 words
The method of claim 8, wherein the softening composition of claim 3 is added as a final rinse during laundering.
Claim 11
Dependent Claim
29 words
In the process of softening fabrics in water, the improvement which comprises adding to the water the composition of claim 2, in an amount sufficient to soften said fabrics.
Claim 12
Dependent Claim
29 words
In the process of softening fabrics in water, the improvement which comprises adding to the water the composition of claim 1 in an amount sufficient to soften said fabrics.
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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |