JP2001240765A5 - - Google Patents

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JP2001240765A5
JP2001240765A5 JP2000385430A JP2000385430A JP2001240765A5 JP 2001240765 A5 JP2001240765 A5 JP 2001240765A5 JP 2000385430 A JP2000385430 A JP 2000385430A JP 2000385430 A JP2000385430 A JP 2000385430A JP 2001240765 A5 JP2001240765 A5 JP 2001240765A5
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titanium dioxide
calcium carbonate
aqueous suspension
complex
calcium
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JP3928353B2 (en
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【００１５】
【課題を解決するための手段】
本発明は、炭酸化反応を利用して炭酸カルシウム粒子の表層に二酸化チタン粒子を有することを特徴とする二酸化チタン−炭酸カルシウム複合体の製造方法および該二酸化チタン−炭酸カルシウム複合体を填料および塗工用顔料として使用したことを特徴とする高不透明度用紙に関するものである。請求項１に係る二酸化チタン−炭酸カルシウム複合体は炭酸カルシウム粒子の表層に二酸化チタン粒子を有し、炭酸化反応を利用して製造したことを特徴とする。請求項２に係る二酸化チタン−炭酸カルシウム複合体はさらに二酸化チタン−炭酸カルシウム複合体の平均粒子径が２〜４０μｍにすることが好ましい。請求項３に係る二酸化チタン−炭酸カルシウム複合体はさらに二酸化チタン−炭酸カルシウム複合体における二酸化チタンの比率が複合体全固形分に対し１〜４０重量％であることが好ましい。請求項４に係る二酸化チタン−炭酸カルシウム複合体の製造方法は以上に説明した本発明に係る二酸化チタン−炭酸カルシウム複合体を炭酸化反応を利用して製造することを特徴とする。さらに、請求項５に係る二酸化チタン−炭酸カルシウム複合体の製造方法は水酸化カルシウム水性懸濁液に、二酸化炭素含有ガスを吹き込んで炭酸カルシウムを生成させ、炭酸化率が５０〜９５％となったときに二酸化チタン水性懸濁液を加えて炭酸化反応を続行させることを特徴とする。また、請求項６に係る二酸化チタン−炭酸カルシウム複合体の製造方法は炭酸カルシウム水性懸濁液に、水酸化カルシウム水性懸濁液および二酸化チタン水性懸濁液を添加した後、該混合懸濁液に二酸化炭素含有ガスを吹き込んで炭酸化反応を行わしめるに当たり、該炭酸カルシウム水性懸濁液／水酸化カルシウム水性懸濁液／二酸化チタン水性懸濁液の混合比率が固形分重量で１００／４〜７５／１〜１３０であるよう制御して行うことを特徴とする。請求項７に係る二酸化チタン−炭酸カルシウム複合体の製造方法はさらに、請求項６の方法において、水酸化カルシウム／二酸化チタンの固形分重量比率が０．５／１〜５／１に制御することを特徴とする。請求項８に係る高不透明度用紙は請求項１〜３のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体を填料として使用することにより得られる。請求項９に係る高不透明度用紙は請求項８の高不透明度用紙を原紙としてその両面に有機顔料と接着剤を主成分とする表面処理剤を塗工、乾燥してなることを特徴とする高不透明度用紙である。請求項１０に係る二酸化チタン−炭酸カルシウム複合体スラリーの製造方法は、請求項４〜７のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体の製造方法において、二酸化チタン−炭酸カルシウム複合体を更にフィルタープレスにより脱水濃縮してケーキを得、少なくとも分散剤を添加し撹拌機により分散してスラリーとした後、湿式解砕処理することを特徴とする。請求項１１に係る塗工紙は請求項１〜３のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体を塗工顔料として使用することにより得られる。[0015]
[Means for Solving the Problems]
The present invention relates to a method for producing a titanium dioxide-calcium carbonate complex characterized by having titanium dioxide particles on the surface of calcium carbonate particles by using a carbonation reaction, and a filler and a paint for the titanium dioxide-calcium carbonate complex. The present invention relates to a high opacity paper characterized by being used as an industrial pigment. The titanium dioxide-calcium carbonate complex according to claim 1 is characterized in that titanium dioxide particles are provided on the surface layer of the calcium carbonate particles and manufactured using a carbonation reaction . Preferably, the titanium dioxide-calcium carbonate complex according to claim 2 further has an average particle diameter of 2 to 40 μm of the titanium dioxide-calcium carbonate complex. In the titanium dioxide-calcium carbonate complex according to claim 3, the ratio of titanium dioxide in the titanium dioxide-calcium carbonate complex is preferably 1 to 40% by weight based on the total solid content of the complex. The method for producing a titanium dioxide-calcium carbonate composite according to a fourth aspect is characterized in that the titanium dioxide-calcium carbonate composite according to the present invention described above is produced using a carbonation reaction. Furthermore, in the method for producing a titanium dioxide-calcium carbonate complex according to claim 5, a carbon dioxide-containing gas is blown into a calcium hydroxide aqueous suspension to form calcium carbonate, and the carbonation ratio becomes 50 to 95%. When the reaction is carried out, an aqueous titanium dioxide suspension is added to continue the carbonation reaction. In the method for producing a titanium dioxide-calcium carbonate complex according to claim 6, after the calcium hydroxide aqueous suspension and the titanium dioxide aqueous suspension are added to the calcium carbonate aqueous suspension, the mixed suspension is obtained. The mixing ratio of the aqueous suspension of calcium carbonate / the aqueous suspension of calcium hydroxide / the aqueous suspension of titanium dioxide is 100/4 to the solid weight by weight when carrying out the carbonation reaction by blowing a carbon dioxide-containing gas into the Control is performed so as to be 75/1 to 130. In the method for producing a titanium dioxide-calcium carbonate composite according to claim 7, further, in the method according to claim 6, controlling the weight ratio of solids of calcium hydroxide / titanium dioxide to 0.5 / 1 to 5/1. It is characterized by The high opacity paper according to claim 8 is obtained by using the titanium dioxide-calcium carbonate composite according to any one of claims 1 to 3 as a filler. The high opacity paper according to claim 9 is characterized in that the high opacity paper according to claim 8 is used as a base paper and a surface treatment agent mainly composed of an organic pigment and an adhesive is coated on both sides and dried. High opacity paper. In the method for producing a titanium dioxide-calcium carbonate composite slurry according to claim 10, in the method for producing a titanium dioxide-calcium carbonate composite according to any one of claims 4 to 7, the titanium dioxide-calcium carbonate composite is used. Furthermore, a filter press is used for dehydration and concentration to obtain a cake, and at least a dispersing agent is added and dispersed by a stirrer to form a slurry, which is then subjected to a wet disintegration treatment. The coated paper according to claim 11 is obtained by using the titanium dioxide-calcium carbonate composite according to any one of claims 1 to 3 as a coating pigment.

Claims (11)

炭酸カルシウム粒子の表層に二酸化チタン粒子を有し、炭酸化反応を利用して製造したことを特徴とする二酸化チタン−炭酸カルシウム複合体。A titanium dioxide-calcium carbonate composite comprising titanium dioxide particles on the surface layer of calcium carbonate particles and produced using a carbonation reaction . 平均粒子径が２〜４０μｍである請求項１記載の二酸化チタン−炭酸カルシウム複合体。The titanium dioxide-calcium carbonate complex according to claim 1, which has an average particle size of 2 to 40 m. 二酸化チタン−炭酸カルシウム複合体における二酸化チタンの比率が複合体全固形分に対し１〜４０重量％である請求項１または２記載の二酸化チタン−炭酸カルシウム複合体。The titanium dioxide-calcium carbonate complex according to claim 1 or 2, wherein the ratio of titanium dioxide in the titanium dioxide-calcium carbonate complex is 1 to 40% by weight based on the total solid content of the complex. 炭酸化反応を利用して製造することを特徴とする請求項１〜３のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体の製造方法。The method for producing a titanium dioxide-calcium carbonate composite according to any one of claims 1 to 3, which is produced using a carbonation reaction. 水酸化カルシウム水性懸濁液に、二酸化炭素含有ガスを吹き込んで炭酸カルシウムを生成させ、炭酸化率が５０〜９５％となったときに二酸化チタン水性懸濁液を加えて炭酸化反応を続行させる請求項４に記載の二酸化チタン−炭酸カルシウム複合体の製造方法。A carbon dioxide-containing gas is blown into the calcium hydroxide aqueous suspension to generate calcium carbonate, and when the carbonation ratio reaches 50 to 95%, the titanium dioxide aqueous suspension is added to continue the carbonation reaction The manufacturing method of the titanium dioxide-calcium carbonate complex of Claim 4 . 炭酸カルシウム水性懸濁液に、水酸化カルシウム水性懸濁液および二酸化チタン水性懸濁液を添加した後、該混合懸濁液に二酸化炭素含有ガスを吹き込んで炭酸化反応を行わしめるに当たり、該炭酸カルシウム水性懸濁液／水酸化カルシウム水性懸濁液／二酸化チタン水性懸濁液の混合比率が固形分重量で１００／４〜７５／１〜１３０である請求項４に記載の二酸化チタン−炭酸カルシウム複合体の製造方法。The calcium carbonate aqueous suspension and the titanium dioxide aqueous suspension are added to the calcium carbonate aqueous suspension, and then a carbon dioxide-containing gas is blown into the mixed suspension to carry out the carbonation reaction. The titanium dioxide-calcium carbonate according to claim 4, wherein the mixing ratio of calcium aqueous suspension / calcium hydroxide aqueous suspension / titanium dioxide aqueous suspension is 100/4 to 75/1 to 130 by solid weight. Method of manufacturing a complex. 水酸化カルシウム／二酸化チタンの固形分重量比率が０．５／１〜５／１である請求項６に記載の二酸化チタン−炭酸カルシウム複合体の製造方法。The method for producing a titanium dioxide-calcium carbonate composite according to claim 6, wherein the solid content weight ratio of calcium hydroxide / titanium dioxide is 0.5 / 1 to 5/1. 請求項１〜３のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体を填料として使用することを特徴とする高不透明度用紙。A high opacity paper characterized by using the titanium dioxide-calcium carbonate complex according to any one of claims 1 to 3 as a filler. 原紙の両面に有機顔料と接着剤を主成分とする表面処理剤を塗工、乾燥してなることを特徴とする請求項８記載の高不透明度用紙。9. A high opacity paper according to claim 8, wherein a surface treatment agent composed mainly of an organic pigment and an adhesive is coated on both sides of a base paper and dried. 請求項４〜７のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体の製造方法において、二酸化チタン−炭酸カルシウム複合体を更にフィルタープレスにより脱水濃縮してケーキを得、少なくとも分散剤を添加し撹拌機により分散してスラリーとした後、湿式解砕処理することを特徴とする二酸化チタン−炭酸カルシウム複合体スラリーの製造方法。The method for producing a titanium dioxide-calcium carbonate complex according to any one of claims 4 to 7, wherein the titanium dioxide-calcium carbonate complex is further dehydrated and concentrated by a filter press to obtain a cake, and at least a dispersing agent is added A method of producing a titanium dioxide-calcium carbonate composite slurry comprising dispersing with a stirrer into a slurry and subjecting the mixture to a wet crushing treatment. 請求項１〜３のいづれか一項に記載の二酸化チタン−炭酸カルシウム複合体を塗工顔料として使用した塗工紙。Coated paper using the titanium dioxide-calcium carbonate composite according to any one of claims 1 to 3 as a coating pigment.
JP2000385430A 1999-12-20 2000-12-19 Method for producing titanium dioxide-calcium carbonate composite and paper using the same Expired - Lifetime JP3928353B2 (en)

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JP3392109B2 (en) * 2000-07-04 2003-03-31 日鉄鉱業株式会社 Method for producing titanium dioxide-fusiform calcium carbonate composite particles, and composite composition and composite containing the composite particles
JP5058413B2 (en) * 2001-07-26 2012-10-24 奥多摩工業株式会社 Calcium carbonate-containing composite substrate, method for producing the same, and coated paper using the same
JP5058445B2 (en) * 2005-02-21 2012-10-24 大王製紙株式会社 Coated paper for printing
DE102005012824A1 (en) * 2005-03-17 2006-09-21 Stockhausen Gmbh Method for determining and controlling deposit formation in a water system
EP1961863B1 (en) * 2005-12-14 2014-07-30 Nippon Paper Industries Co., Ltd. Coated printing paper
JP5280281B2 (en) * 2009-04-06 2013-09-04 上野製薬株式会社 Liquid crystal polymer composition and molded article comprising the same
CN104893364A (en) * 2015-06-03 2015-09-09 安徽省铜陵县牛山矿业有限责任公司 Production technique and production line of mineral/TiO2 composite granular material
KR101957129B1 (en) * 2017-04-19 2019-03-15 재단법인 포항산업과학연구원 METHOD FOR MANUFACTURING OF CaCO3 COMPLEX COATED BY TiO2 ON CaCO3 SURFACE
CN114057511B (en) * 2021-12-06 2023-06-23 山东金泰恒盛新材料科技有限公司 Stone paper for food packaging and preparation method and application thereof
CN115109437A (en) * 2022-07-12 2022-09-27 龙佰禄丰钛业有限公司 Preparation method of composite titanium dioxide

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