US3619351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for control of resin in cellulose pulp suspensions
Assignee: Mo och Domsjo AB
•
Filing: 1969-01-29
•
Granted: 1971-11-09
•
Expires: 1989-01-29
Abstract
Abstract Process and composition for controlling resin in aqueous cellulose pulp suspensions which comprises incorporating in the suspension a resin control agent comprising a water-soluble nonsurface-active cationic quaternary ammonium salt.
Inventors
- 👤 Frans Adam Kolosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:22
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; B; B23; B23H; B23H3/00; B23H3/08; D21H21/00; D21H21/02; Y; Y10; Y10S; Y10S162/00; Y10S162/04; Y10S162/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
18 words
An aqueous cellulose pulp suspension according to claim 1 in which the quaternary ammonium salt has the formula:
Claim 2
Dependent Claim
20 words
An aqueous pulp suspension according to claim 2 wherein three of the R radicals are saturated lower aliphatic hydrocarbon radicals.
Claim 3
Dependent Claim
17 words
An aqueous pulp suspension according to claim 2 wherein three of the R radicals are hydroxyalkyl radicals.
Claim 4
Dependent Claim
18 words
An aqueous pulp suspension according to claim 2 wherein three of the R radicals are hydroxyalkylene polyoxyalkylene radicals.
Claim 5
Dependent Claim
22 words
An aqueous pulp suspension according to claim 2 wherein X is selected from the group consisting of HSO4, CH3SO4, Cl and Br.
Claim 6
Dependent Claim
21 words
An aqueous pulp suspension according to claim 2 wherein the quaternary ammonium salt is a quaternary methyl triethanolamine having the formula:
Claim 7
Dependent Claim
132 words
A process for the control of resin in aqueous cellulose pulp suspensions, which comprises incorporating in the suspension a resin control agent comprising a water-soluble nonsurface-active cationic quaternary ammonium salt selected from the group consisting of quaternary ammonium lower alkyl salts, quaternary ammonium lower alkanol salts, and quaternary ammonium polyoxyalkylenealkanol salts wherein the polyoxyalkylenealkanol groups have a formula selected from the group consisting of (C2H4O)mH, (C3H6O)pH and (C4H8O)q wherein m is an integer from one to ten, p is an integer from one to five, and q is an integer from one to two; and mixtures of two or more of such groups, in an amount within the range from 0.005 to about 1 percent based on the weight of the cellulose pulp fibers to inhibit deposition of resin from the suspension.
Claim 8
Dependent Claim
15 words
A process according to claim 8 in which the quaternary ammonium salt has the formula:
Claim 9
Dependent Claim
20 words
A process according to claim 9 in which the quaternary ammonium salt is a quaternary methyl triethanolamine having the formula:
Claim 10
Dependent Claim
18 words
A process according to claim 9 wherein three of the R radicals are saturated lower aliphatic hydrocarbon radicals.
Claim 11
Dependent Claim
15 words
A process according to claim 9 wherein three of the R radicals are hydroxyalkyl radicals.
Claim 12
Dependent Claim
16 words
A process according to claim 9 wherein three of the R radicals are hydroxyalkylene polyoxyalkylene radicals.
Claim 13
Dependent Claim
20 words
A process according to claim 9 wherein X is selected from the group consisting of HSO4, CH3SO4, Cl and Br.
References Cited (Backward Citations)
CA566988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |