JPH0112876B2 - - Google Patents
Info
- Publication number
- JPH0112876B2 JPH0112876B2 JP8341986A JP8341986A JPH0112876B2 JP H0112876 B2 JPH0112876 B2 JP H0112876B2 JP 8341986 A JP8341986 A JP 8341986A JP 8341986 A JP8341986 A JP 8341986A JP H0112876 B2 JPH0112876 B2 JP H0112876B2
- Authority
- JP
- Japan
- Prior art keywords
- deinking
- pulp
- waste paper
- mixture
- polyhydric alcohol
- 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
- 239000002761 deinking Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 16
- 239000000194 fatty acid Substances 0.000 claims description 16
- 229930195729 fatty acid Natural products 0.000 claims description 16
- 150000004665 fatty acids Chemical class 0.000 claims description 16
- 239000010893 paper waste Substances 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 150000005846 sugar alcohols Polymers 0.000 claims description 8
- 125000002947 alkylene group Chemical group 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 239000003925 fat Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 235000014593 oils and fats Nutrition 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000000976 ink Substances 0.000 description 15
- 239000002994 raw material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000005188 flotation Methods 0.000 description 10
- 235000019198 oils Nutrition 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- 235000019197 fats Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000012190 activator Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- ARXKVVRQIIOZGF-UHFFFAOYSA-N 1,2,4-butanetriol Chemical compound OCCC(O)CO ARXKVVRQIIOZGF-UHFFFAOYSA-N 0.000 description 2
- -1 Alkylbenzene sulfonate Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 235000015278 beef Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 239000013055 pulp slurry Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003760 tallow Substances 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- SQHKJSPPFSVNDF-UHFFFAOYSA-N 1,2,2,3-tetrakis(hydroxymethyl)cyclohexan-1-ol Chemical compound OCC1CCCC(O)(CO)C1(CO)CO SQHKJSPPFSVNDF-UHFFFAOYSA-N 0.000 description 1
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- KXZLHMICGMACLR-UHFFFAOYSA-N 2-(hydroxymethyl)-2-pentylpropane-1,3-diol Chemical compound CCCCCC(CO)(CO)CO KXZLHMICGMACLR-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229940105990 diglycerin Drugs 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940013317 fish oils Drugs 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Description
〔産業上の利用分野〕
本発明は新聞、雑誌等の古紙再生時に用いられ
る脱墨剤に関する。更に詳しくは新聞、雑誌等を
フロテーシヨン法で脱墨処理するに際し、高白色
度のそして残インキ数の少ない脱墨パルプを得る
ための脱墨剤に関する。
〔従来の技術及び問題点〕
新聞、雑誌等の再生利用は古くから行われて来
ているが、特に最近はその重要性を増して来てお
り、更に脱墨パルプの用途も高度利用への要請が
高まつてきている。一方最近の古紙は印刷技術、
印刷方式の変化、印刷インキ成分の変化等、脱墨
という観点から見れば一層険しい状況となりつつ
あり、より以上脱墨を促進させる為装置にも改良
が加えられて来ている。古紙からインキその他の
不純物を分離除去する為従来から用いられて来た
薬剤は苛性ソーダ、硅酸ソーダ、リン酸ソーダ等
のアルカリ剤、過酸化水素、次亜硫酸塩、次亜塩
素酸塩等の漂白剤、DTPA、EDTA等の金属イ
オン封鎖剤と共に脱墨剤としてアルキルベンゼン
スルホン酸塩、高級アルコール硫酸エステル塩、
α−オレフインスルホン酸塩、ジアルキルスルホ
サクシネート等の陰イオン活性剤、高級アルコー
ル、アルキルフエノール及び脂肪酸のEO付加物、
EO・PO付加物及びアルカノールアマイド類等の
非イオン活性剤が単独又は２種以上混合されて使
用されて来た。しかしこれらの脱墨剤ではフロテ
ーシヨン処理におけるインキ分離除去能が小さ
く、その為優れたインキ凝集能を有する脱墨剤が
開発が要望されて来た。
フロテーシヨン工程でのインキ除去能の最も優
れた剤として脂肪酸（古紙離解工程で苛性ソーダ
と併用されるため脂肪酸石鹸となる）が公知であ
るが、新聞、雑誌原料に対して脂肪酸を使用した
場合、古紙から離脱したインキが装置へ付着する
事によるトラブルが生じたり、フロテーシヨン工
程における発泡性が非常に小さく、凝集浮上した
インキの除去が充分に行われず、製品パルプ中に
残存してインキスポツト等後工程でトラブルを引
き起こす事、更に使用量が陰イオン活性剤、非イ
オン活性剤使用時に比べて非常に多くなければ効
果が出なく薬品コストが高くつく等の欠点を有す
る。
〔問題点を解決するための手段〕
そこで、本発明者らは脂肪酸使用時のかかる欠
点を改良すべく鋭意研究を重ねた結果、脂肪酸の
特徴を維持しつつその欠点を改善した脱墨剤を見
出し、本発明を完成した。
即ち本発明は、(a)炭素数８〜22の高級脂肪酸又
はその塩、及び(b)天然油脂と多価アルコールの混
合物にアルキレンオキシドを付加して得られる反
応生成物を重量比でａ／ｂ＝70／30〜５／95の割
合で混合して成る古紙再生用脱墨剤を提供するも
のである。
本発明に用いられる高級脂肪酸は、炭素数が８
〜22、好ましくは８〜18の範囲にあることが重要
である。炭素数が８より小さいとインキ凝集効果
が低下し、また炭素数が22を越えても脱墨効果は
低下してくる。炭素数８〜22の高級脂肪酸の具体
例としては、カプリル酸、カプリン酸、ラウリン
酸、ミリスチン酸、パルミチン酸、ステアリン
酸、オレイン酸等を挙げることができる。更に、
高級脂肪酸は炭素数が単一のものばかりでなく、
牛脂脂肪酸、椰子脂肪酸のように各種炭素数の混
合物でも構わない。
古紙離解工程で苛性ソーダが併用される為、高
級脂肪酸は脂肪酸石鹸となつて作用する。従つ
て、高級脂肪酸は最初から塩（ナトリウム、カリ
ウム、アンモニウム等）の形で用いてもよい。
本発明に用いられる天然油脂としては、ヤシ
油、パーム油、オリーブ油、大豆油、菜種油、ア
マニ油等の植物油、豚脂、牛脂、骨油等の動物
油、魚油及びこれらの硬化油、半硬化油、更には
これら油脂の精製工程で得られる回収油等が挙げ
られる。
また多価アルコールとしては、エチレングリコ
ール、プロピレングリコール、トリメチレングリ
コール、ブチレングリコール、グリセリン、トリ
メチロールプロパン、トリメチロールエタン、
１，２，４−ブタントリオール、１，２，６−ヘ
キサントリオール、１，１，１−トリメチロール
ヘキサン、ペンタエリスリトール、テトラメチロ
ールシクロヘキサノール、ジグリセリン等が挙げ
られる。
上記天然油脂と多価アルコールの混合物に付加
されるアルキレンオキシドとしては、エチレンオ
キシド、プロピレンオキシド、ブチレンオキシド
等が挙げられる。アルキレンオキシドの付加は、
混合して付加する（ランダム付加）か、もしくは
順次付加（ブロツク付加）することによつて行う
ことができるが、ランダム付加又はエチレンオキ
シドとエチレンオキシドを除くアルキレンオキシ
ドのブロツク付加が好ましい。
天然油脂と多価アルコールの混合割合はモル比
で１：0.1〜１：３、好ましくは１：0.3〜１：２
である。
アルキレンオキシドは天然油脂と多価アルコー
ルの和１モルに対して５モル以上、特に20〜100
モルを使用するのが好ましい。５モル未満である
と古紙からのインキ離脱性、フロテーシヨン処理
時の発泡性が低下する。
本発明の脱墨剤において、(a)、(b)の成分の配合
比は、重量比でａ／ｂ＝70／30〜５／95の範囲で
あり、好ましくは60／40〜30／70である。この範
囲を外れるとインキ凝集性、フロテーシヨン時の
発泡性のバランスが崩れるため、高白色度、低残
インキ数のパルプを得ることができず、また安定
操業が困難となる。
本発明の脱墨剤は古紙離解工程、熟成タワー工
程の何れか又は両工程へ分割添加しても良いが、
古紙離解工程へ添加した場合が最も効果を発揮す
る。
添加量は原料古紙に対して0.2〜1.0重量％が好
ましい。また、本発明の脱墨剤は従来一般に用い
られている公知の脱墨剤と併用することも可能で
ある。
〔実施例及び発明の効果〕
以下、実施例により本発明を具体的に説明する
が、本発明はこれら実施例に限定されるものでは
ない。
実施例 １
まず、表−１に示す組成で本発明の(b)成分（試
料１〜６）を調製した。次いで、市中回収新聞古
紙を２×５cmに細断後、その一定量を卓上解離機
に入れ、その中に水及び苛性ソーダ（対原料）
1.0％（重量基準、以下同じ）、硅酸ソーダ（対原
料）3.0％、30％過酸化水素水（対原料）3.0％、
表−２に示す各種の脱墨剤（対原料）0.4％を加
え、パルプ濃度５％、55℃、20分離解した後、50
℃にて60分間熟成した。その後水を加えてパルプ
濃度を1.0％に稀釈し、CaCl2（対原料）1.0％を添
加し、30℃にて10分間フロテーシヨン処理を施し
た。フロテーシヨン後のパルプスラリーを６％濃
度まで濃縮後、水を加えて１％濃度に稀釈し、
TAPPIシートマシンにてパルプシートを作製し
た。得られたパルプシートを測色色差計にて白色
度を測定し、画像解析装置（×126倍）にて残イ
ンキ数を測定した。結果を併せて表−２に示す。
[Industrial Application Field] The present invention relates to a deinking agent used when recycling used paper such as newspapers and magazines. More specifically, the present invention relates to a deinking agent for obtaining deinked pulp with high whiteness and a small number of residual ink when deinking newspapers, magazines, etc. by the flotation method. [Prior art and problems] Recycling of newspapers, magazines, etc. has been carried out for a long time, but recently it has become especially important, and the use of deinked pulp is also becoming more advanced. Demand is increasing. On the other hand, recent waste paper uses printing technology,
Changes in printing methods, changes in printing ink components, etc. are making the situation even more difficult from the standpoint of deinking, and improvements have been made to equipment to further promote deinking. Chemicals traditionally used to separate and remove ink and other impurities from waste paper include alkaline agents such as caustic soda, sodium silicate, and sodium phosphate, and bleaching agents such as hydrogen peroxide, hyposulfite, and hypochlorite. Alkylbenzene sulfonate, higher alcohol sulfate ester salt,
α-olefin sulfonate, anionic activator such as dialkyl sulfosuccinate, higher alcohol, EO adduct of alkylphenol and fatty acid,
Nonionic surfactants such as EO/PO adducts and alkanolamides have been used singly or in combinations of two or more. However, these deinking agents have a low ability to separate and remove ink during flotation treatment, and therefore there has been a demand for the development of a deinking agent that has excellent ink coagulation ability. Fatty acids (used together with caustic soda in the waste paper disintegration process to form fatty acid soaps) are known as agents with the best ink removal ability in the flotation process, but when fatty acids are used for newspaper and magazine raw materials, waste paper Problems may occur due to the ink that has separated from the pulp adhering to the equipment, or the foaming property in the flotation process is very low, and the ink that has coagulated and floated is not removed sufficiently, remaining in the product pulp and causing problems in subsequent processes such as ink spots. Furthermore, it has disadvantages such as causing troubles and furthermore, unless the amount used is much larger than when using an anionic activator or a nonionic activator, it will not be effective and the cost of chemicals will be high. [Means for Solving the Problems] Therefore, the inventors of the present invention have conducted extensive research to improve these drawbacks when using fatty acids, and have developed a deinking agent that improves the drawbacks while maintaining the characteristics of fatty acids. The present invention has been completed. That is, the present invention provides a reaction product obtained by adding an alkylene oxide to (a) a higher fatty acid having 8 to 22 carbon atoms or a salt thereof, and (b) a mixture of a natural oil or fat and a polyhydric alcohol in a weight ratio of a/ The object of the present invention is to provide a deinking agent for waste paper recycling which is mixed in a ratio of b=70/30 to 5/95. The higher fatty acid used in the present invention has 8 carbon atoms.
It is important that the number is in the range of ~22, preferably 8-18. If the number of carbon atoms is less than 8, the ink aggregation effect will decrease, and if the number of carbon atoms exceeds 22, the deinking effect will decrease. Specific examples of higher fatty acids having 8 to 22 carbon atoms include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid. Furthermore,
Higher fatty acids not only have a single carbon number,
A mixture of various carbon numbers such as beef tallow fatty acid and coconut fatty acid may also be used. Because caustic soda is used in the waste paper disintegration process, higher fatty acids act as fatty acid soaps. Therefore, higher fatty acids may be used in the form of salts (sodium, potassium, ammonium, etc.) from the beginning. Natural oils and fats used in the present invention include vegetable oils such as coconut oil, palm oil, olive oil, soybean oil, rapeseed oil, and linseed oil, animal oils such as lard, beef tallow, and bone oil, fish oils, and hydrogenated and semi-hardened oils thereof. Further examples include recovered oils obtained in the refining process of these oils and fats. Polyhydric alcohols include ethylene glycol, propylene glycol, trimethylene glycol, butylene glycol, glycerin, trimethylolpropane, trimethylolethane,
Examples include 1,2,4-butanetriol, 1,2,6-hexanetriol, 1,1,1-trimethylolhexane, pentaerythritol, tetramethylolcyclohexanol, diglycerin, and the like. Examples of the alkylene oxide added to the mixture of natural oil and fat and polyhydric alcohol include ethylene oxide, propylene oxide, butylene oxide, and the like. The addition of alkylene oxide is
It can be carried out by mixing and adding (random addition) or sequentially adding (block addition), but random addition or block addition of ethylene oxide and alkylene oxide other than ethylene oxide is preferred. The mixing ratio of natural oil and fat and polyhydric alcohol is 1:0.1 to 1:3 in molar ratio, preferably 1:0.3 to 1:2.
It is. Alkylene oxide is 5 mol or more, especially 20 to 100, per 1 mol of the sum of natural oil and fat and polyhydric alcohol.
Preference is given to using moles. If the amount is less than 5 moles, the ink release property from waste paper and the foaming property during flotation treatment will be reduced. In the deinking agent of the present invention, the blending ratio of components (a) and (b) is a/b = 70/30 to 5/95 by weight, preferably 60/40 to 30/70. It is. Outside this range, the balance between ink cohesiveness and foamability during flotation will be disrupted, making it impossible to obtain pulp with high whiteness and a low number of residual inks, and also making stable operation difficult. The deinking agent of the present invention may be added in portions to either or both of the waste paper disintegration process and the aging tower process.
It is most effective when added to the waste paper disintegration process. The amount added is preferably 0.2 to 1.0% by weight based on the raw waste paper. Further, the deinking agent of the present invention can also be used in combination with known deinking agents that have been commonly used. [Examples and Effects of the Invention] Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples. Example 1 First, component (b) of the present invention (samples 1 to 6) was prepared with the composition shown in Table 1. Next, after shredding the recycled newspapers into 2 x 5 cm pieces, put a certain amount of them into a tabletop dissociator, and add water and caustic soda (to the raw material).
1.0% (by weight, same below), sodium silicate (based on raw materials) 3.0%, 30% hydrogen peroxide solution (based on raw materials) 3.0%,
Add 0.4% of various deinking agents (based on raw materials) shown in Table 2, and dissolve at 55℃ for 20 minutes at a pulp concentration of 5%.
Aged for 60 minutes at ℃. Thereafter, water was added to dilute the pulp to 1.0%, 1.0% CaCl 2 (based on raw materials) was added, and a flotation treatment was performed at 30° C. for 10 minutes. After the pulp slurry after flotation was concentrated to a concentration of 6%, water was added to dilute it to a concentration of 1%.
A pulp sheet was produced using a TAPPI sheet machine. The whiteness of the obtained pulp sheet was measured using a colorimeter, and the number of remaining inks was measured using an image analyzer (126x magnification). The results are also shown in Table-2.
【表】
シドである。
[Table] This is Sid.
【表】
実施例 ２
市中回収新聞古紙を２×５cmに細断後、その一
定量を卓上解離機に入れ、その中に水及び苛性ソ
ーダ（対原料）1.0％、硅酸ソーダ３号（対原料）
0.5％、表−３に示す各種の脱墨剤（対原料）0.4
％を加え、パルプ濃度５％、45℃、20分離解後、
パルプ濃度を18％になる様に脱水し、その中に苛
性ソーダ（対原料）1.5％、硅酸ソーダ３号（対
原料）2.5％、30％過酸化水素水（対原料）3.0％
を加えて混合した後、55℃、90分間、パルプ濃度
15％で熟成処理を行つた。その後パルプ濃度４％
になる様に水を加え卓上離解機で５分間離解処理
を施し、更に水を加えてパルプ濃度を1.0％に稀
釈し、CaCl2（対原料）1.0％を添加し、30℃にて
10分間フロテーシヨン処理を行つた。フロテーシ
ヨン後のパルプスラリーを６％濃度まで濃縮後、
水を加えて１％濃度に稀釈し、TAPPIシートマ
シンにてパルプシートを作製した。得られたパル
プシートを測色色差計にて白色度を測定し、画像
解析装置（×126倍）にて残インキ数を測定した。
結果を併せて表−３に示す。[Table] Example 2 After shredding municipally collected waste newspaper into 2 x 5 cm pieces, put a certain amount of it into a tabletop dissociator, and add water, caustic soda (based on the raw material) at 1.0%, and sodium silicate No. 3 (based on the material). material)
0.5%, various deinking agents shown in Table 3 (based on raw materials) 0.4
%, pulp concentration 5%, 45℃, 20 separations,
Dehydrate the pulp to a concentration of 18%, and add 1.5% caustic soda (based on the raw material), 2.5% sodium silicate No. 3 (based on the raw material), and 3.0% hydrogen peroxide solution (based on the raw material).
After adding and mixing, 55℃, 90 minutes, pulp density
Aging treatment was performed at 15%. Then pulp concentration 4%
Add water and disintegrate for 5 minutes using a tabletop disintegrator, add water to dilute the pulp to 1.0%, add 1.0% CaCl 2 (based on raw materials), and store at 30℃.
Flotation treatment was performed for 10 minutes. After concentrating the pulp slurry after flotation to a concentration of 6%,
The mixture was diluted with water to a concentration of 1%, and a pulp sheet was produced using a TAPPI sheet machine. The whiteness of the obtained pulp sheet was measured using a colorimeter, and the number of remaining inks was measured using an image analyzer (126x magnification).
The results are also shown in Table 3.
Claims (1)
び(b)天然油脂と多価アルコールの混合物にアルキ
レンオキシドを付加して得られる反応生成物を重
量比でａ／ｂ＝70／30〜５／95の割合で混合して
成る古紙再生用脱墨剤。 ２ 反応生成物が天然油脂と多価アルコールの混
合物の和１モルに対して５モル以上のアルキレン
オキシドを付加して得られたものである特許請求
の範囲第１項記載の古紙再生用脱墨剤。 ３ 天然油脂と多価アルコールの混合物の混合割
合が、モル比で１：0.1〜１：３である特許請求
の範囲第１項記載の古紙再生用脱墨剤。[Claims] 1. A reaction product obtained by adding an alkylene oxide to a mixture of (a) a higher fatty acid having 8 to 22 carbon atoms or a salt thereof, and (b) a natural oil or fat and a polyhydric alcohol, expressed in weight ratio. A deinking agent for recycling used paper made by mixing a/b in a ratio of 70/30 to 5/95. 2. Deinking for waste paper recycling according to claim 1, wherein the reaction product is obtained by adding 5 moles or more of alkylene oxide to 1 mole of a mixture of natural oils and fats and polyhydric alcohol. agent. 3. The deinking agent for waste paper recycling according to claim 1, wherein the mixing ratio of the mixture of natural oil and fat and polyhydric alcohol is 1:0.1 to 1:3 in molar ratio.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61083419A JPS62257489A (en) | 1986-04-11 | 1986-04-11 | Deinking agent for regenerating old paper |
| DE8787302886T DE3772086D1 (en) | 1986-04-11 | 1987-04-02 | INK REMOVAL COMPOSITION FOR RECOVERY OF WASTE PAPER. |
| ES87302886T ES2025157B3 (en) | 1986-04-11 | 1987-04-02 | COMPOSITION FOR ELIMINATING INK WHEN RECYCLING USED PAPER. |
| EP19870302886 EP0241224B1 (en) | 1986-04-11 | 1987-04-02 | Deinking composition for reclamation of waste paper |
| SE8701471A SE467111B (en) | 1986-04-11 | 1987-04-08 | COMPOSITION FOR DETERMINING RECOVERY PAPERS |
| KR1019870003392A KR920006422B1 (en) | 1986-04-11 | 1987-04-09 | Deinking composition for reclamation of waste paper |
| US07/211,172 US4964949A (en) | 1986-04-11 | 1988-06-22 | Deinking composition for reclamation of waste paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61083419A JPS62257489A (en) | 1986-04-11 | 1986-04-11 | Deinking agent for regenerating old paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62257489A JPS62257489A (en) | 1987-11-10 |
| JPH0112876B2 true JPH0112876B2 (en) | 1989-03-02 |
Family
ID=13801918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61083419A Granted JPS62257489A (en) | 1986-04-11 | 1986-04-11 | Deinking agent for regenerating old paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62257489A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992007997A1 (en) * | 1990-10-24 | 1992-05-14 | Kao Corporation | Deinking agent |
| WO1992007996A1 (en) * | 1990-10-24 | 1992-05-14 | Kao Corporation | Deinking agent |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02139486A (en) * | 1988-11-18 | 1990-05-29 | Kao Corp | Deinking agent |
| JPH02293483A (en) * | 1989-04-28 | 1990-12-04 | Kao Corp | Deinking agent |
-
1986
- 1986-04-11 JP JP61083419A patent/JPS62257489A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992007997A1 (en) * | 1990-10-24 | 1992-05-14 | Kao Corporation | Deinking agent |
| WO1992007996A1 (en) * | 1990-10-24 | 1992-05-14 | Kao Corporation | Deinking agent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62257489A (en) | 1987-11-10 |
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