GB1127177A - Paper of improved dry strength and process for preparing it - Google Patents
Paper of improved dry strength and process for preparing itInfo
- Publication number
- GB1127177A GB1127177A GB45136/65A GB4513665A GB1127177A GB 1127177 A GB1127177 A GB 1127177A GB 45136/65 A GB45136/65 A GB 45136/65A GB 4513665 A GB4513665 A GB 4513665A GB 1127177 A GB1127177 A GB 1127177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mol
- epichlorohydrin
- water
- paper
- functionality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/56—Polyamines; Polyimines; Polyester-imides
Abstract
1,127,177. Paper. AMERICAN CYANAMID CO. 25 Oct., 1965, No. 45136/65. Headings D2A and D2B. Paper of improved dry tensile strength but low wet strength is substantially composed of water-laid fibres of unbleached cellulose, bonded together by an ionically adsorbed content of a normally water-soluble, two-dimensional, non-thermosetting cationic polyamine containing at least five amino nitrogen atoms per macromolecule, and having a molecular weight between 1,000 and 10,000. The fibres may contain more than 1 % of acidic lignin material, and the polyamine may be used in amount sufficient to neutralize substantially all of this material. The polyamine may be formed by reacting substantially completely, to a point short of gelation, epichlorohydrin with a major proportion of water-soluble "bifunctional" amine and a minor proportion of water-soluble "polyfunctional" amine, the ratio of the "functionality" of the epichlorohydrin to the total "functionality" of the amines being substantially 1:1. "Bifunctional" and "polyfunctional" are defined as meaning capable of reacting twice or more than twice, respectively, with epichlorohydrin; and "functionality" as number of reactive functions present. In the Examples: (A) 1.2 mol of aqueous methylamine, 0.2 mol of ethylendiamine, and 1.6 mol of epichlorohydrin are reacted in a flask in the presence of water and of sodium hydroxide in the later stages, the solution is then neutralized with acetic acid and cooled: (B) 1 mol of methylamine, 0.2 mol of ammonia and' 1.3 mol of epichlorohydrin are reacted similarly, the final neutralization being with HC1: (C) 1.25 mol of tetraethylenpentamine is heated with 1.25 mol of adipic acid. and the product dissolved in water. 0.275 mol of epichlorohydrin is added. and after reaction the solution is acidified with HCl: (D) as C, but using methylenebisacrylamide in place of epichlorohydrin; (E) as C. but using 1.2-dichlorethane in place of epichlorohydrin; (F) one mol of tetraethylenpentamine is reacted with 1.2 mol of dichlorethane in the presence of water, and 1.2 mol of NaOH added to neutralize the acid formed. Papers are made by adding these polymers to unbleached pulp, sheeting out and drying. Fillers may also be present, e.g. ultramarine, clay, TiO., and calcium carbonate, or basic dyes. Any broke arising is readily repulped.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US341413A US3258393A (en) | 1964-01-30 | 1964-01-30 | Dry strength paper containing unbleached cellulosic fibers and a non-thermosetting cationic polyamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1127177A true GB1127177A (en) | 1968-09-11 |
Family
ID=23337452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB45136/65A Expired GB1127177A (en) | 1964-01-30 | 1965-10-25 | Paper of improved dry strength and process for preparing it |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3258393A (en) |
| AU (1) | AU6552365A (en) |
| FR (1) | FR1455530A (en) |
| GB (1) | GB1127177A (en) |
| NL (1) | NL6514656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023283710A1 (en) | 2021-07-15 | 2023-01-19 | Klabin S.A. | Dispersible paper, method for producing same, packaging and use of said paper |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102738A (en) * | 1977-01-17 | 1978-07-25 | American Cyanamid Company | Use of chitosan in corrugating medium |
| CN112551937B (en) * | 2020-12-07 | 2022-08-05 | 绵竹市铸诚混凝土有限公司 | Composite additive for fair-faced concrete, fair-faced concrete and preparation method of fair-faced concrete |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2884057A (en) * | 1954-02-25 | 1959-04-28 | American Cyanamid Co | Paper of improved dry strength and method of making same |
| US2834675A (en) * | 1954-06-10 | 1958-05-13 | American Cyanamid Co | Polyalkylene-polyamine resinous composition, method of making paper using same and paper containing same |
| US3019156A (en) * | 1957-04-29 | 1962-01-30 | American Cyanamid Co | Wet strength paper containing polyamide |
| US3086961A (en) * | 1959-12-07 | 1963-04-23 | American Cyanamid Co | Water-soluble dibasic acid-polyalkylenepolyamine-alkylene glycol crosslinked polymer |
-
1964
- 1964-01-30 US US341413A patent/US3258393A/en not_active Expired - Lifetime
-
1965
- 1965-10-20 AU AU65523/65A patent/AU6552365A/en not_active Expired
- 1965-10-25 GB GB45136/65A patent/GB1127177A/en not_active Expired
- 1965-11-11 NL NL6514656A patent/NL6514656A/xx unknown
- 1965-11-15 FR FR38426A patent/FR1455530A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023283710A1 (en) | 2021-07-15 | 2023-01-19 | Klabin S.A. | Dispersible paper, method for producing same, packaging and use of said paper |
Also Published As
| Publication number | Publication date |
|---|---|
| US3258393A (en) | 1966-06-28 |
| AU6552365A (en) | 1967-04-20 |
| FR1455530A (en) | 1966-04-01 |
| NL6514656A (en) | 1967-05-12 |
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