EP0044695A2 - Blends of algin, tamarind, and a polycationic electroconductive polymer - Google Patents
Blends of algin, tamarind, and a polycationic electroconductive polymer Download PDFInfo
- Publication number
- EP0044695A2 EP0044695A2 EP81303236A EP81303236A EP0044695A2 EP 0044695 A2 EP0044695 A2 EP 0044695A2 EP 81303236 A EP81303236 A EP 81303236A EP 81303236 A EP81303236 A EP 81303236A EP 0044695 A2 EP0044695 A2 EP 0044695A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blend
- tamarind
- weight
- algin
- paper
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/10—Bases for charge-receiving or other layers
- G03G5/101—Paper bases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current
Definitions
- Blends of algin and tamarind have recently been described in U.S. Pat. No. 4,257,768 and in EPO SN 79 302 481.1, filed November 6, 1979. The blend was taught to be useful in paper coatings.
- the polycationic electroconductive polymer used is Conductive Polymer 261, sold by Calgon Corporation, described in U.S. Patent 3,288,770, and TAPPI, Vol. 50, No. 1, 1967, pp. 26-38. This is a linear chain, repeating ring polymer having quaternary ammonium salt groups on the backbone.
- blends of the algin-tamarind with Conductive Polymer 261 improve the water retention, film-forming, release (less tackiness), and solvent holdout properties of the polymer.
- Amounts of algin-tamarind relative to the amount of total solids of polymer plus blend range from 1.5-10% by weight, preferably about 1.6-4% by weight.
- the best algin-tamarind blend is a 1:4 blend made as disclosed in EPO 79 302 481.1, supra.
- An example from that publication is as follows:
- Sodium alginate and tamarind kernel powder are dry mixed in the weight ratio 20:80.
- the mix is dissolved in deionized water by heating to 74°C for 20 min. with stirring.
- the solution is cooled to room temperature and concentrations of 0.5%, 1% and 2% are prepared.
- the blend of algin-tamarind in Conductive Polymer 261 is made by first dissolving the algin-tamarind blend in water (about 2% by weight concentration). Procedures for dissolving it involve slowly adding the blend with vigorous stirring at elevated temperatures to distilled water. Generally, a syrupy, translucent liquid results in about 15 min. This solution is then mixed with the commercial solution of Conductive Polymer 261 (generally available as a 40% aqueous solution), in amounts so that about 96-97% of the final dry coating is Polymer 261 and about 4-3% is the blend. The actual working amount of solids in the paper coating composition is about 12% solids.
- a 2% by weight solution of a dry blend (4:1) of tamarind gum:sodium alginate was prepared by slowly adding it with vigorous stirring at elevated temperatures to distilled water, and maintaining these conditions until it dissolves (about 15 min). Subsequent solution was a syrupy, translucent, tan liquid.
- the blend was mixed with CP-261LV at 3:97 weight ratio (based on active solids) and compared to plain CP-261LV in a typical size press color of 12.4% total solids.
- the drawdown evaluations were made on a 38-pound conditioned Camas rawstock. In each case, three drawdowns were made using a No. 3 Meyer rod and three were made using a No. 10 Meyer rod. The felt side was coated in all cases. Drawdown designations, basis weights and coat weights are listed in Table II.
- Coatweights were obtained using an analytical balance (before and after application of the color).
- Alginate alone mixed with Polymer 261 is not compatible; a gel forms which cannot be tested.
- a property of the blends of this invention is that they stiffen paper when applied at the levels used for coating paper.
Abstract
Description
- Blends of Algin, Tamarind, and A Polycationic Electroconductive Polymer
- Blends of algin and tamarind have recently been described in U.S. Pat. No. 4,257,768 and in EPO SN 79 302 481.1, filed November 6, 1979. The blend was taught to be useful in paper coatings.
- The polycationic electroconductive polymer used is Conductive Polymer 261, sold by Calgon Corporation, described in U.S. Patent 3,288,770, and TAPPI, Vol. 50, No. 1, 1967, pp. 26-38. This is a linear chain, repeating ring polymer having quaternary ammonium salt groups on the backbone.
- It has now been found that blends of the algin-tamarind with Conductive Polymer 261 improve the water retention, film-forming, release (less tackiness), and solvent holdout properties of the polymer. Amounts of algin-tamarind relative to the amount of total solids of polymer plus blend range from 1.5-10% by weight, preferably about 1.6-4% by weight. The best algin-tamarind blend is a 1:4 blend made as disclosed in EPO 79 302 481.1, supra. An example from that publication is as follows:
- Sodium alginate and tamarind kernel powder are dry mixed in the weight ratio 20:80. The mix is dissolved in deionized water by heating to 74°C for 20 min. with stirring. The solution is cooled to room temperature and concentrations of 0.5%, 1% and 2% are prepared.
- The blend of algin-tamarind in Conductive Polymer 261 is made by first dissolving the algin-tamarind blend in water (about 2% by weight concentration). Procedures for dissolving it involve slowly adding the blend with vigorous stirring at elevated temperatures to distilled water. Generally, a syrupy, translucent liquid results in about 15 min. This solution is then mixed with the commercial solution of Conductive Polymer 261 (generally available as a 40% aqueous solution), in amounts so that about 96-97% of the final dry coating is Polymer 261 and about 4-3% is the blend. The actual working amount of solids in the paper coating composition is about 12% solids.
- This invention is illustrated by the following experimental description.
- A 2% by weight solution of a dry blend (4:1) of tamarind gum:sodium alginate was prepared by slowly adding it with vigorous stirring at elevated temperatures to distilled water, and maintaining these conditions until it dissolves (about 15 min). Subsequent solution was a syrupy, translucent, tan liquid.
- The other component used in the formulations was Conductive Polymer 261 (Calgon CP 261LV) (1500 cPs at 22°C). The order of addition of components in each color is given in Table I. All formulations made down fairly easily with no major problems.
- The blend was mixed with CP-261LV at 3:97 weight ratio (based on active solids) and compared to plain CP-261LV in a typical size press color of 12.4% total solids. The drawdown evaluations were made on a 38-pound conditioned Camas rawstock. In each case, three drawdowns were made using a No. 3 Meyer rod and three were made using a No. 10 Meyer rod. The felt side was coated in all cases. Drawdown designations, basis weights and coat weights are listed in Table II.
- The usual coating, drying and conditioning techniques were used. Coatweights were obtained using an analytical balance (before and after application of the color).
-
- The combinations drawn from the above data indicate that the alginate:tamarind blend does not adversely affect conductivity of the Polymer 261.
- Surface resistivity measurements at 20% and 50% relative humidity were nearly identical to the respective CP-261LV coated sheets, see Table III for additional details.
- Solvent holdout properties of drawdowns coated with the CP-261LV/alginate:tamarind blend formulations were significantly better than with CP-261LV alone, see Table III for details.
- At the concentration used with CP-261LV, the alginate:tamarind blend appeared to have a significant beneficial effect in reducing sheet tackiness. Table IV gives details of experimental results.
- Alginate alone mixed with Polymer 261 is not compatible; a gel forms which cannot be tested.
- Lack of sheet stiffness is a common problem in conductivized reprographic papers, especially at high relative humidities. Where this occurs, one solution is to increase the basis weight of the paper, which is of economic disadvantage. A property of the blends of this invention is that they stiffen paper when applied at the levels used for coating paper.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81303236T ATE16196T1 (en) | 1980-07-17 | 1981-07-14 | MIXTURES OF SODIUM ALGINATE, TAMARIND GUM AND A POLYCATIONIC ELECTROCONDUCTING POLYMER. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16957880A | 1980-07-17 | 1980-07-17 | |
US169578 | 1980-07-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0044695A2 true EP0044695A2 (en) | 1982-01-27 |
EP0044695A3 EP0044695A3 (en) | 1982-12-01 |
EP0044695B1 EP0044695B1 (en) | 1985-10-23 |
Family
ID=22616295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81303236A Expired EP0044695B1 (en) | 1980-07-17 | 1981-07-14 | Blends of algin, tamarind, and a polycationic electroconductive polymer |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0044695B1 (en) |
JP (1) | JPS5753003A (en) |
AT (1) | ATE16196T1 (en) |
DE (1) | DE3172706D1 (en) |
DK (1) | DK317581A (en) |
ES (1) | ES503815A0 (en) |
GR (1) | GR74281B (en) |
PT (1) | PT73358B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0771671A1 (en) * | 1995-11-06 | 1997-05-07 | Fuji Xerox Co., Ltd. | Conducting polymer thin film and process for producing the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1046733A (en) * | 1963-04-22 | 1966-10-26 | Albert Wassermann | Improvements in making electroconducting materials |
-
1981
- 1981-07-09 ES ES503815A patent/ES503815A0/en active Granted
- 1981-07-13 PT PT73358A patent/PT73358B/en unknown
- 1981-07-14 AT AT81303236T patent/ATE16196T1/en not_active IP Right Cessation
- 1981-07-14 DE DE8181303236T patent/DE3172706D1/en not_active Expired
- 1981-07-14 EP EP81303236A patent/EP0044695B1/en not_active Expired
- 1981-07-15 GR GR65523A patent/GR74281B/el unknown
- 1981-07-16 DK DK317581A patent/DK317581A/en not_active Application Discontinuation
- 1981-07-17 JP JP56110967A patent/JPS5753003A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1046733A (en) * | 1963-04-22 | 1966-10-26 | Albert Wassermann | Improvements in making electroconducting materials |
Non-Patent Citations (1)
Title |
---|
TAPPI, vol. 51, no. 12, December 1968, pages 552-559, New York, USA; M.F. HOOVER et al.: "Performance-structure relationships of electroconductive polymers". * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0771671A1 (en) * | 1995-11-06 | 1997-05-07 | Fuji Xerox Co., Ltd. | Conducting polymer thin film and process for producing the same |
US6008828A (en) * | 1995-11-06 | 1999-12-28 | Fuji Xerox Co., Ltd. | Image forming apparatus including conducting polymer layer for ionic dye intake and release |
Also Published As
Publication number | Publication date |
---|---|
JPS5753003A (en) | 1982-03-29 |
EP0044695B1 (en) | 1985-10-23 |
DE3172706D1 (en) | 1985-11-28 |
EP0044695A3 (en) | 1982-12-01 |
DK317581A (en) | 1982-01-18 |
GR74281B (en) | 1984-06-21 |
ATE16196T1 (en) | 1985-11-15 |
ES8307273A1 (en) | 1983-07-01 |
ES503815A0 (en) | 1983-07-01 |
PT73358B (en) | 1983-06-15 |
PT73358A (en) | 1981-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2655302T3 (en) | Color composition of coating and paper or cardboard coated with it | |
EP0027316B1 (en) | Blend of algin, tkp and guar gum and pigmented or non-pigmented paper coating compositions comprising this blend | |
EP0216516B1 (en) | Aqueous suspensions of mixtures of inorganic pigments | |
EP0404582B1 (en) | Gellan gum sizing | |
DE3061958D1 (en) | Paper coating compositions | |
JP2683718B2 (en) | Release base paper and release paper having a silicate-containing basecoat | |
EP0044695B1 (en) | Blends of algin, tamarind, and a polycationic electroconductive polymer | |
Baker | Methylcellulose and sodium carboxymethylcellulose: An evaluation for use in paper conservation through accelerated aging | |
US4373011A (en) | Blends of algin, tamarind, and a polycationic electroconductive polymer | |
US3010833A (en) | Ink adjuvants | |
EP0009982B1 (en) | An aqueous polymer dispersion composition useful as a glazing coat for papers | |
US2836512A (en) | Cyanoethylated starch solutions | |
US3672922A (en) | Benzyl starch emulsion coating compositions | |
WO1993009289A1 (en) | Coating pigments | |
EP0044190B1 (en) | Use of heteropolysaccharide s-119 as a paper finish | |
US7713617B2 (en) | Recording media for electrophotographic printing | |
JP2516751B2 (en) | Coating composition for paper | |
DE2510919B2 (en) | Paper coating slips and their uses | |
JPH05117994A (en) | Method of covering paper and boxboard and manufacture of paper having excellent smoothness | |
WO2019081258A1 (en) | Process for imparting grease, oil and water repellence to substrates | |
US3329525A (en) | Paper bearing a polyvinyl alcoholamylosic composition | |
SU1028757A1 (en) | Paper and boardcoating composition | |
CN117488579A (en) | Water-based gloss oil suitable for surface treatment of rotary printing books and periodicals paper and preparation method thereof | |
CN116548477A (en) | Antibacterial self-repairing microcapsule for water-based paint on wood surface and preparation method thereof | |
CN111364285A (en) | High-surface-retention coating, coated paper and preparation method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
ITCL | It: translation for ep claims filed |
Representative=s name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
17P | Request for examination filed |
Effective date: 19830425 |
|
ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 16196 Country of ref document: AT Date of ref document: 19851115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3172706 Country of ref document: DE Date of ref document: 19851128 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19860609 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19860731 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19860731 Year of fee payment: 6 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19870714 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19870715 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19870731 Ref country code: CH Effective date: 19870731 |
|
BERE | Be: lapsed |
Owner name: MERCK & CO. INC. Effective date: 19870731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19880201 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19880331 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19880401 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19881118 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19890731 |
|
EUG | Se: european patent has lapsed |
Ref document number: 81303236.4 Effective date: 19880831 |