Patent US4172067A successfully refreshed from Google Patents.
US4172067A
Expired / Lapsed
US
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Froth aid
Assignee: Omnova Services Inc
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Filing: 1978-09-25
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Granted: 1979-10-23
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Expires: 1998-09-25
Abstract
Abstract A froth-aid useful in frothing a carboxylated latex for use as an adhesive in the manufacture of carpets comprises in certain proportions urea, the sodium salt of condensed naphthalene sulfonic acid, a blend of about C 8 to C 18 fatty alcohols, ammonium or sodium lauryl sulfate and water.
Inventors
- 👤 Richard E. Benton
- 👤 David P. Gruber
- 👤 Henry G. Schmidt
- 👤 Ralph E. Myers, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:24
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/08; C08; C08J; C08J9/00; C08J9/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
A composition of matter comprising in the following proportions (1) from about 17 to 26 parts by weight of urea, (2) from about 1.5 to 2.5 parts by weight of the sodium salt of condensed naphthalene sulfonic acid, (3) from about 7.5 to 13 parts by weight of mixed about C 8 to C 18 fatty alcohols, (4) from about 7.5 to 13 parts by weight of ammonium lauryl sulfate or sodium lauryl sulfate or mixture thereof and (5) from about 35 to 55 parts by weight of water.
Claim 2
Dependent Claim
89 words
A composition of matter comprising in the following proportions (1) from about 17 to 26 parts by weight of urea, (2) from about 1.5 to 2.5 parts by weight of the sodium salt of condensed naphthalene sulfonic acid, (3) from about 7.5 to 13 parts by weight of mixed about C 8 to C 18 fatty alcohols, (4) from about 7.5 to 13 parts by weight of ammonium lauryl sulfate or sodium lauryl sulfate or mixture thereof and (5) from about 35 to 55 parts by weight of water.
Claim 3
Dependent Claim
41 words
A composition of matter according to claim 1 containing additionally a carboxylated copolymer latex where the ratio, on a dry weight basis, of the copolymer of said latex to the composition of said claim 1 is from about 100:1 to 100:4.
Claim 4
Dependent Claim
15 words
A composition of matter according to claim 2 wherein said latex contains a mineral filler.
Claim 5
Dependent Claim
47 words
A composition of matter according to claim 3 wherein the copolymer of said latex is a copolymer of about 55% by weight of styrene, not over about 5% by weight total of methacrylic acid and itaconic acid and the balance butadiene-1,3 and the filler is calcium carbonate.
References Cited (Backward Citations)
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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) | 1982-10-22 | 1983-04-23 | 1983-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-22 | 1987-04-23 | 1987-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-22 | 1991-04-23 | 1991-10-23 | $7700.00 | Window Closed / Lapsed |