CA1092736A - Starch/latex cast coatings for paper - Google Patents
Starch/latex cast coatings for paperInfo
- Publication number
- CA1092736A CA1092736A CA251,795A CA251795A CA1092736A CA 1092736 A CA1092736 A CA 1092736A CA 251795 A CA251795 A CA 251795A CA 1092736 A CA1092736 A CA 1092736A
- Authority
- CA
- Canada
- Prior art keywords
- parts
- binder
- modified starch
- paper
- starch
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/54—Starch
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/22—Polyalkenes, e.g. polystyrene
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
- D21H21/52—Additives of definite length or shape
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
- Paints Or Removers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A non-proteinaceous binder for cast coating of paper which is made up of three primary components: modified starch and two latexes of carboxylated styrene-butadiene polymeric materials. Paper coated with the binder, as well as a process employing the binder in the cast coating of paper are described.
A non-proteinaceous binder for cast coating of paper which is made up of three primary components: modified starch and two latexes of carboxylated styrene-butadiene polymeric materials. Paper coated with the binder, as well as a process employing the binder in the cast coating of paper are described.
Description
09Z~736 The present invention relates to a non-proteinaceous binder composition adapted for the cast coating of paper as described, for example, in U.S. Patent Nos. 1,719,166 and
2,568,288 (Reissue No. 23,637).
Casein, a proteinaceous material, has been the chief adhesivelcomponent in binder compositions for cast coating of paper since the inception of this process. Attempts have been made to circumvent the use of casein because of its high cost and, at times, limited availability. Up to now, however,
Casein, a proteinaceous material, has been the chief adhesivelcomponent in binder compositions for cast coating of paper since the inception of this process. Attempts have been made to circumvent the use of casein because of its high cost and, at times, limited availability. Up to now, however,
3 lo because of the stringent requirements of a suitable binder for cast coating of paper a suitable substitute for casein has not been available. For example, one of the mzin requirements for a suitable binder in the cast coating operation is sustained drum release. In its simplest form the cast coating operation compriseg applying an aqueous coating to a paper substrate.
The coating is pressed against a rotating heated chromium surface. In the process, the coating must stick and conform to the chromium surface while wet, but on drying must have auto-releasing properties.
The binder composition should also yield a commercial quality paper sheet of outstanding print quality, press perform-ance, sheet gloss; water-resistance, fold, and freedom from c~rling. It should also permit maximum drum speed in the coating operation.
B
. ~ ~................... . . . .
~09Z736 With the foregoing in mind, we provide in accordance with the invention a non-proteinaceous binder composition adapted for cast surface coating of paper, characterized in that the binder composition ~omprises modified starch, and two carboxylated styrene-butadiene latexes which differ in the type and/or amsunt of carboxylation.
The binder composition of the invention eliminates ~' the need for casein and thereby overcomes the problems inherent in the use of casein as the adhesive component.
More specifically, the binder composition of the ~ invention may advantageously include the following ingredients i in an aqueous medium, the parts being on a dry weight basis.
An insoluble filler such as a mineral filler of about 85 parts calcium carbonate and about 15 parts #2 coating clay;
about 0.5 parts of an inorganic polyphosphate dispersant; ?
about 0.7 parts of an organic dispersan,t;
`, about 3-5 parts of a modified starch;
1 20 about 6-8 parts of Dow 650 Latex;
; about 5-12 parts of Dow XD-8388.02 Latex;
.f sufficient ammonia to impart a pH of 9.5-10;
about 1.5 parts to 1.75 of an oleaginous release agent;
B 25 about 1.0 parts do ~ um salt of Pentalyn 856 The coating composition has a pH of about 9.5 to 10 and a total solids content of about 55 - 60%.
The calcium carbonate employed in the composition advantageously comprises precipitated calcium carbonate with a specific surface of 35,000 to 40,000 sq. centimeters/gram.
The No. 2 coating clay is of the kaolin type having a particle .. ~
10!~736 - size of 82% less than 2 microns. The inorganic polyphosphate employed as a dispersant is sold under the trademark Calgon and Calgon T by Merck and Company. Organic dispersants are sold under the trad~mark Tamol 850 by Rohm & Haas, Dow XD-7321 by Dow Chemical Company, and Dispex N-40 by allied Colloids.
The modified starch is of the ethylated, cationic or high amylopectin type, as for example, 1) Acid hydrolyzed hydroxyethyl ether cornstarch sold under the trademarks Penford Gum and Pencote by Penick and Ford, and Amizo 745-D by American Maize Products Co., as an ethylated modified starch 2) Starch sold under the trademark Cato-Bond 485 by National Starch as a cationic modified starch gi 3) Starch sold under the trademark Amioca 85 by National Starch as a high amylopectin modified starch.
Carboxylated styrene-butadiene polymeric latexes are sold under the trademarks Dow 650 I.atex and Dow XD-8388.02 Latex. They differ in types and/or amounts of carboxylation.
The oleaginous release agent is an oleaginous ~ material such as disclosed in U.S. Patent No. 2,568,288, ; issued September 18, 1951, and in column 3 line 39, to column
The coating is pressed against a rotating heated chromium surface. In the process, the coating must stick and conform to the chromium surface while wet, but on drying must have auto-releasing properties.
The binder composition should also yield a commercial quality paper sheet of outstanding print quality, press perform-ance, sheet gloss; water-resistance, fold, and freedom from c~rling. It should also permit maximum drum speed in the coating operation.
B
. ~ ~................... . . . .
~09Z736 With the foregoing in mind, we provide in accordance with the invention a non-proteinaceous binder composition adapted for cast surface coating of paper, characterized in that the binder composition ~omprises modified starch, and two carboxylated styrene-butadiene latexes which differ in the type and/or amsunt of carboxylation.
The binder composition of the invention eliminates ~' the need for casein and thereby overcomes the problems inherent in the use of casein as the adhesive component.
More specifically, the binder composition of the ~ invention may advantageously include the following ingredients i in an aqueous medium, the parts being on a dry weight basis.
An insoluble filler such as a mineral filler of about 85 parts calcium carbonate and about 15 parts #2 coating clay;
about 0.5 parts of an inorganic polyphosphate dispersant; ?
about 0.7 parts of an organic dispersan,t;
`, about 3-5 parts of a modified starch;
1 20 about 6-8 parts of Dow 650 Latex;
; about 5-12 parts of Dow XD-8388.02 Latex;
.f sufficient ammonia to impart a pH of 9.5-10;
about 1.5 parts to 1.75 of an oleaginous release agent;
B 25 about 1.0 parts do ~ um salt of Pentalyn 856 The coating composition has a pH of about 9.5 to 10 and a total solids content of about 55 - 60%.
The calcium carbonate employed in the composition advantageously comprises precipitated calcium carbonate with a specific surface of 35,000 to 40,000 sq. centimeters/gram.
The No. 2 coating clay is of the kaolin type having a particle .. ~
10!~736 - size of 82% less than 2 microns. The inorganic polyphosphate employed as a dispersant is sold under the trademark Calgon and Calgon T by Merck and Company. Organic dispersants are sold under the trad~mark Tamol 850 by Rohm & Haas, Dow XD-7321 by Dow Chemical Company, and Dispex N-40 by allied Colloids.
The modified starch is of the ethylated, cationic or high amylopectin type, as for example, 1) Acid hydrolyzed hydroxyethyl ether cornstarch sold under the trademarks Penford Gum and Pencote by Penick and Ford, and Amizo 745-D by American Maize Products Co., as an ethylated modified starch 2) Starch sold under the trademark Cato-Bond 485 by National Starch as a cationic modified starch gi 3) Starch sold under the trademark Amioca 85 by National Starch as a high amylopectin modified starch.
Carboxylated styrene-butadiene polymeric latexes are sold under the trademarks Dow 650 I.atex and Dow XD-8388.02 Latex. They differ in types and/or amounts of carboxylation.
The oleaginous release agent is an oleaginous ~ material such as disclosed in U.S. Patent No. 2,568,288, ; issued September 18, 1951, and in column 3 line 39, to column
4, line 54, of Reissue Patent No. 23,637 and in the Examples of said patent.
Pentalyn 856 is a pentaerythritol ester of rosin sold by Hercules Chemical Company.
It is a feature of the invention that the disadvantages attributable to the individual components ; 30 of the binder composition are offset or avoided by the synergistic effect obtained by admixing the individual binder components. Thus, while starch functions like a thermosetting binder and aids casting drum release and imparts ink attack resistance, it is not easily .
~ - 4 -B
.. ....
waterproofed (a property a cast coating must have). On the other hand, while Dow 650 has less than desired drum release i properties, when combined with starch, it increases ink attack resistance and also aids in waterproofing starch. As to Dow XD-8388.02 while its sheet surface is poor, when combined with starch and Dow 650, it imparts desirable release properties.
3 Accordingly, by using the three components within the range specified, the undesirable properties of each component are offset or avoided and the desired properties enhanced.
In the general preparation of the coating composition, the above mentioned components are merely added to a sufficient amount of water to give the desired total solids contents and r pH of the finished coating preparation.
m e following are examples of specific embodiments of the invention.
EXAMPLE I
In the formula set forth in the specification above there are employed 3 parts Pencote ethylated starch sold by . :,-Penick and Fort (or the same amount of Amaizo 745-D ethylated atarch sold by kmerican Maize Products Co.); 8 parts of Dow 650 Latex and 8 parts of Dow XD-8388.02 Latex.
EXAMPLE II
In the formula set forth in the specification above there are employed 4 parts of Pencote ethylated starch (or the same amount of Amaizo 745-D ethylated starch); 8 parts Dow 650 Latex and 6 parts of Dow XD-8388.02 Latex.
,~
1`~`
i .~
... . .
EXAMPLE III
In the formula set forth in the specification above there are employed 5 parts of Pencote ethylated starch (or the same amount of Amaizo 745-D ethylated starch); 6 parts of Dow 650 Latex, and 8 parts of Dow XD-8388.02 Latex.
The preferret formulation i8 that of Example III.
With this formulation the drum release of the coatings is at maximum efficiency.
In employing the formulations in the cast coating of paper, the aqueous coating composition is applied to a paper substrate and pressed against a rotating heated chromium surface and then dried in the manner described in the above mentioned patents. By means of the above described coating compositions there are obtained cast coated papers of high ~ 15 printing quality, press performance, sheet gloss, water 3 resistance, fold, and freed~m from curling.
.
.
Pentalyn 856 is a pentaerythritol ester of rosin sold by Hercules Chemical Company.
It is a feature of the invention that the disadvantages attributable to the individual components ; 30 of the binder composition are offset or avoided by the synergistic effect obtained by admixing the individual binder components. Thus, while starch functions like a thermosetting binder and aids casting drum release and imparts ink attack resistance, it is not easily .
~ - 4 -B
.. ....
waterproofed (a property a cast coating must have). On the other hand, while Dow 650 has less than desired drum release i properties, when combined with starch, it increases ink attack resistance and also aids in waterproofing starch. As to Dow XD-8388.02 while its sheet surface is poor, when combined with starch and Dow 650, it imparts desirable release properties.
3 Accordingly, by using the three components within the range specified, the undesirable properties of each component are offset or avoided and the desired properties enhanced.
In the general preparation of the coating composition, the above mentioned components are merely added to a sufficient amount of water to give the desired total solids contents and r pH of the finished coating preparation.
m e following are examples of specific embodiments of the invention.
EXAMPLE I
In the formula set forth in the specification above there are employed 3 parts Pencote ethylated starch sold by . :,-Penick and Fort (or the same amount of Amaizo 745-D ethylated atarch sold by kmerican Maize Products Co.); 8 parts of Dow 650 Latex and 8 parts of Dow XD-8388.02 Latex.
EXAMPLE II
In the formula set forth in the specification above there are employed 4 parts of Pencote ethylated starch (or the same amount of Amaizo 745-D ethylated starch); 8 parts Dow 650 Latex and 6 parts of Dow XD-8388.02 Latex.
,~
1`~`
i .~
... . .
EXAMPLE III
In the formula set forth in the specification above there are employed 5 parts of Pencote ethylated starch (or the same amount of Amaizo 745-D ethylated starch); 6 parts of Dow 650 Latex, and 8 parts of Dow XD-8388.02 Latex.
The preferret formulation i8 that of Example III.
With this formulation the drum release of the coatings is at maximum efficiency.
In employing the formulations in the cast coating of paper, the aqueous coating composition is applied to a paper substrate and pressed against a rotating heated chromium surface and then dried in the manner described in the above mentioned patents. By means of the above described coating compositions there are obtained cast coated papers of high ~ 15 printing quality, press performance, sheet gloss, water 3 resistance, fold, and freed~m from curling.
.
.
Claims (8)
1. A non-proteinaceous binder for cast surface coating of paper which comprises from about 3-5 parts of a modified starch selected from an ethylated, a cationic or a high amylopectin modified starch and from two carboxylated styrene-butadiene latexes which differ in the type and/or amount of carboxylation, one of which is present in an amount of 6 to 8 parts while the other is present in an amount of 5 to 12 parts, all parts being on a dry weight basis.
2. The binder of Claim 1 which in addition contains an insoluble filler, an inorganic polyphosphate dispersant, an organic dispersant, an oleaginous release material and a pentaerythritol ester of rosin.
3. The binder of Claim 1, wherein about 5 parts of modified starch and wherein 6 parts of one and 8 parts of the other of the two carboxylated styrene-butadiene latexes are present, calculated on the dry weight basis.
4. The binder of Claim 3, wherein the modified starch is an ethylated starch.
5. Paper cast surface coated with the binder of Claim 1.
6. In a process of making cast surface coated paper the improvement which comprises employing the binder of Claim 1.
7. A binder as claimed in Claim 1, comprising about 85 parts of calcium carbonate, about 15 parts of clay, about 0.5 part of inorganic polyphosphate dispersant, about 0.7 part of organic dispersant, about 3-5 parts of modified starch, about 6-8 parts of a butadiene-styrene latex, about 5-12 parts of another butadiene-styrene latex, about 1.5 parts of an oleaginous release agent and about 1.0 part of the sodium salt of a pentaerythritol ester of rosin, said binder composition having a pH of about 9.5-10.
8. The binder of Claim 7, wherein the modified starch is an acid hydrolyzed hydroxyethyl ether cornstarch, and the oleaginous release agent is oleic acid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57471875A | 1975-05-05 | 1975-05-05 | |
| US574718 | 1990-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1092736A true CA1092736A (en) | 1980-12-30 |
Family
ID=24297329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,795A Expired CA1092736A (en) | 1975-05-05 | 1976-05-04 | Starch/latex cast coatings for paper |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS51136731A (en) |
| BE (1) | BE841488A (en) |
| CA (1) | CA1092736A (en) |
| DE (1) | DE2619848C2 (en) |
| GB (1) | GB1514428A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2392167A1 (en) * | 1977-05-23 | 1978-12-22 | Protex Manuf Prod Chimiq | PAPER COATING COMPOSITIONS |
| GB2016498B (en) | 1978-01-18 | 1982-08-11 | Blue Circle Ind Ltd | Compositions for use with paper-making fillers |
| JPS5643499A (en) * | 1979-09-08 | 1981-04-22 | Japan Synthetic Rubber Co Ltd | Internal size latex for paper making |
| JPS5716996A (en) * | 1980-07-04 | 1982-01-28 | Nippon Kakoh Seishi Kk | Coating composition for cast coated paper |
| JPS57117694A (en) * | 1980-12-30 | 1982-07-22 | Asahi Dow Ltd | Coating liquid composition for cast coat paper |
| JPS60119294A (en) * | 1983-12-01 | 1985-06-26 | カルカーブ エンジニアリング リミテツド | Production of paper coating composition |
| DE4327366C1 (en) * | 1993-08-14 | 1995-01-05 | Feldmuehle Ag Stora | Paper or board having a coating applied by cast coating, process for the production and use |
| FI116536B (en) * | 2001-04-12 | 2005-12-15 | Ciba Sc Holding Ag | New coating composition |
| CN102758380B (en) * | 2012-06-26 | 2014-08-20 | 浙江金昌纸业有限公司 | Surface micro-coating agent for producing pure paper and non-woven paper and preparation method thereof |
| EP3283700B1 (en) | 2015-04-15 | 2020-01-15 | Ocado Innovation Limited | System and method for configuration of buildings or storage |
| DE102015121397A1 (en) * | 2015-12-09 | 2017-06-14 | Elringklinger Ag | A method for producing a dimensionally stable fiber component and a suspension containing a binder therefor |
| CN115584255A (en) * | 2022-09-30 | 2023-01-10 | 河南京华新材料技术有限公司 | Polyacrylamide thickening agent for fracturing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1262460A (en) * | 1968-04-16 | 1972-02-02 | Doverstrand Ltd | Coating compositions |
-
1976
- 1976-04-21 GB GB1604676A patent/GB1514428A/en not_active Expired
- 1976-05-04 CA CA251,795A patent/CA1092736A/en not_active Expired
- 1976-05-04 JP JP5124376A patent/JPS51136731A/en active Pending
- 1976-05-05 BE BE166758A patent/BE841488A/xx not_active IP Right Cessation
- 1976-05-05 DE DE19762619848 patent/DE2619848C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2619848A1 (en) | 1976-11-18 |
| BE841488A (en) | 1976-11-05 |
| GB1514428A (en) | 1978-06-14 |
| JPS51136731A (en) | 1976-11-26 |
| DE2619848C2 (en) | 1982-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |