Detailed description of the invention
The present invention provides a kind of based on diatomaceous Cypres compositions in first aspect, and described compositions comprises
Or it is made up of following component: starch;Calcium chloride;Chelating agent;White color system dyestuff;Kieselguhr;Bentonite;And Muscovitum.
The type of described starch is not particularly limited by the present invention.Described starch can be unmodified starch can also be to change
Property starch.It is preferred that modified starch;It may further be preferable that described modified starch choosing free oxidation modification starch, sun
The group of ion modification starch, ethylization modified starch, hydrogen ethoxylation modified starch composition.Also it is preferred that described starch
For natural origin starch;It is further preferred that described natural origin starch selects free corn starch, tapioca and potato starch
The group of composition.Most preferably potato starch.Described starch can be prepared by known technology preparation, it is also possible to from passing through business
Available from, such as can be from Gansu Chao Xing starch-based product company limited or port, Heilungkiang feed product Science and Technology Development Co., Ltd. business
Available from.
Described chelating agent is had no particular limits by the present invention, as long as this chelating agent can have affinity i.e. to calcium ion
Can.In some have the embodiment of choosing, described chelating agent is cellulose;It is further preferred that described chelating agent selects free hydroxyl first
Base cellulose, hydroxy ethyl fiber and the group of hydroxypropyl cellulose composition;Most preferably, described chelating agent is hydroxy propyl cellulose
Element.
There is no particular limitation to described white color system dyestuff for the present invention, and the most described white color system dyestuff selects free furan type white
Colour system dyestuff, coumarin type white color system dyestuff, biphenyl type white color system dyestuff and the group of pyrazoles type white color system dyestuff composition.White color system
Dyestuff can be such as commercially available from sources such as Dongguan City Ke Feng textile auxiliary Industrial Co., Ltd.s.
The present invention employs kieselguhr in the composition.Kieselguhr is a kind of biogenic silicastone, is
In ocean or lake, the remains of the Diatomeae of growth are at subaqueous deposit, and the one gradually formed through natural environment effect is nonmetal
Mineral.Kieselguhr is mainly distributed on the states such as China, the U.S., Denmark, France, Romania.It is a kind of biogenic siliceous heavy
Long-pending rock, it is mainly made up of the remains of diatom in ancient times.China's kieselguhr reserves 3.2 hundred million tons, prospective reserves reaches more than 20 hundred million tons, main
East China to be concentrated on and the Northeast, larger, what reserves were more have Jilin (54.8%), Zhejiang, Yunnan, Shandong,
Sichuan etc. save.
Kieselguhr has the advantage that.(1) pH value is neutral, nontoxic, and suspendability is good, and absorption property is strong, and unit weight is light, mixing
Uniformity is good;(2) kieselguhr makees additive in cement, can improve intensity, makes SiO in cement2Become activity;(3) kieselguhr tool
There is excellent extensibility, have higher impact strength, hot strength, tearing strength, the soft wearability of light weight is good, comprcssive strength is good
Aspect high-quality effect.
The present inventor is found through experiments, and kieselguhr and bentonitic combination can reduce calcium chloride to the pH's of sizing agent
Impact, the starch its colour changed into yellow in suppression sizing agent, thus improve whiteness and the brightness of printing paper.If adding appropriate cloud again
Female, additionally it is possible to improve ratio of printing ink transfer.Being not intended to be bound by theory, the present inventor speculates kieselguhr or kieselguhr
Combination with bentonitic combination and kieselguhr, bentonite and Muscovitum can fetter some ion, such as H+ ion or OH
Ion or discharge some antiparticle such that it is able to play the effect of stable pH;It addition, kieselguhr or kieselguhr, bentonite
Combination with Muscovitum may improve the affinity to ink on printing paper surface, thus improves ratio of printing ink transfer.It addition, diatom
The combination of soil or kieselguhr, bentonite and Muscovitum may be with other compositions of sizing agent such as calcium chloride, chelating agent, white color system
Dyestuff or starch interact, thus bring above-mentioned favourable effect.
Whiteness of the present invention represents with CIE whiteness, and its measuring method is known, for example, see United States Patent (USP) 6,
893,473.Brightness of the present invention represents with ISO brightness, and its metering system is known, for example, see United States Patent (USP) 6,
893,473.These patent documentations are the most completely expressly incorporated herein.Ratio of printing ink transfer represents with IT%, and it is roll-in
The amount of rear shifted optical density;It is expressed as the percentage by the optical density transferring to the non-printing of this printing paper after roll-in
Number.Measure the method for ratio of printing ink transfer to be included on paper and print solid color lump, after waiting the time (5 seconds) of ormal weight,
Doubling printing paper, so that the part of printing contacts with non-printing, and with 4.5 pounds of hands rollers (such as from Chem
The roller of the article No. HR-100 of Instruments, Inc., Mentor, OH, USA) roll-in.By reflection densitometer (X-Rite,
Macbeth.Etc.) facing to the transfer (OD of color lumpT), non-diverting (ODO) part and unimaged region (ODB) read optical density.Turn
The percent (" IT " %) moved is calculated by equation below: IT%=[(ODT–ODB)/(ODO–ODB)]×100。
In the present invention, the particle diameter of kieselguhr, bentonite and Muscovitum is unsuitable excessive, the above-mentioned advantageous effects otherwise brought
May weaken.Described kieselguhr and bentonitic particle diameter preferably no more than 100 microns, preferably no greater than 50 microns.?
Some preferred embodiment in, their particle diameter is preferably 10 to 20 microns;For example, 10,11,12,13,14,15,16,
17,18,19 or 20 microns.
Some preferred embodiment in, the described compositions of the present invention comprises the starch of 100 weight portions;20 to 30 weights
The calcium chloride (calcium chloride of for example, 20,21,22,23,24,25,26,27,28,29 or 30 weight portions) of amount part;2 to 4 weight
The chelating agent (chelating agent of such as 2,3 or 4 weight portions) of part;The white color system dyestuff of 20 to 30 weight portions (such as 20,21,22,
23, the white color system dyestuff of 24,25,26,27,28,29 or 30 weight portions);The kieselguhr of 5 to 15 weight portions (such as 5,6,7,8,
9, the kieselguhr of 10,11,12,13,14 or 15 weight portions;Bentonite (the swelling of such as 1,2 or 3 weight portions of 1 to 3 weight portion
Soil);Muscovitum (Muscovitums of such as 4,5,6,7 or 8 weight portions) with 4 to 8 weight portions.
The present invention provides a kind of method manufacturing printing paper in second aspect, and wherein, described method uses the present invention the
Compositions described in Yi Fangmian carries out top sizing to printing paper.
In one preferred embodiment, the amount of the described sizing agent being applied on printing paper is at least 0.25gsm, excellent
Select 0.25 to 10gsm, more preferably 3.5 to 10gsm, most preferably 4.0 to 10gsm, including anyon scope therein.
In one embodiment, described sizing composition prepares containing 10 to 50% as with water.For example, 10,
11, the solid content of 12,13,14,15,16,17,18,19,20,21,22,23,24,25,30,35,40,45 and 50 weight %
Slurry uses.
The present invention provides the answering in printing paper manufactures of the compositions described in first aspect present invention in the third aspect
With.
Hereafter by embodiment, the present invention will be further described, but these embodiments be not necessarily to be construed as right
The restriction of protection scope of the present invention.