JPH03121460A - Electrophotographic releasing agent - Google Patents
Electrophotographic releasing agentInfo
- Publication number
- JPH03121460A JPH03121460A JP2188800A JP18880090A JPH03121460A JP H03121460 A JPH03121460 A JP H03121460A JP 2188800 A JP2188800 A JP 2188800A JP 18880090 A JP18880090 A JP 18880090A JP H03121460 A JPH03121460 A JP H03121460A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- molecular weight
- melt viscosity
- isotactic
- meth
- 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.)
- Pending
Links
- 239000004743 Polypropylene Substances 0.000 claims abstract description 37
- 229920001155 polypropylene Polymers 0.000 claims abstract description 37
- -1 polypropylene Polymers 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000000155 melt Substances 0.000 claims abstract description 13
- 239000006082 mold release agent Substances 0.000 claims description 10
- 239000002904 solvent Substances 0.000 abstract description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 230000000593 degrading effect Effects 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 12
- 239000011230 binding agent Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000000178 monomer Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 239000003505 polymerization initiator Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- PYOLJOJPIPCRDP-UHFFFAOYSA-N 1,1,3-trimethylcyclohexane Chemical compound CC1CCCC(C)(C)C1 PYOLJOJPIPCRDP-UHFFFAOYSA-N 0.000 description 1
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- OSNILPMOSNGHLC-UHFFFAOYSA-N 1-[4-methoxy-3-(piperidin-1-ylmethyl)phenyl]ethanone Chemical compound COC1=CC=C(C(C)=O)C=C1CN1CCCCC1 OSNILPMOSNGHLC-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- MTLWTRLYHAQCAM-UHFFFAOYSA-N 2-[(1-cyano-2-methylpropyl)diazenyl]-3-methylbutanenitrile Chemical compound CC(C)C(C#N)N=NC(C#N)C(C)C MTLWTRLYHAQCAM-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- IEPRKVQEAMIZSS-UHFFFAOYSA-N Di-Et ester-Fumaric acid Natural products CCOC(=O)C=CC(=O)OCC IEPRKVQEAMIZSS-UHFFFAOYSA-N 0.000 description 1
- IEPRKVQEAMIZSS-WAYWQWQTSA-N Diethyl maleate Chemical compound CCOC(=O)\C=C/C(=O)OCC IEPRKVQEAMIZSS-WAYWQWQTSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- MZVQCMJNVPIDEA-UHFFFAOYSA-N [CH2]CN(CC)CC Chemical group [CH2]CN(CC)CC MZVQCMJNVPIDEA-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- ROPXFXOUUANXRR-YPKPFQOOSA-N bis(2-ethylhexyl) (z)-but-2-enedioate Chemical compound CCCCC(CC)COC(=O)\C=C/C(=O)OCC(CC)CCCC ROPXFXOUUANXRR-YPKPFQOOSA-N 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- LDCRTTXIJACKKU-ARJAWSKDSA-N dimethyl maleate Chemical compound COC(=O)\C=C/C(=O)OC LDCRTTXIJACKKU-ARJAWSKDSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 150000002688 maleic acid derivatives Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- RAPZEAPATHNIPO-UHFFFAOYSA-N risperidone Chemical compound FC1=CC=C2C(C3CCN(CC3)CCC=3C(=O)N4CCCCC4=NC=3C)=NOC2=C1 RAPZEAPATHNIPO-UHFFFAOYSA-N 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は電子写真用離型剤に関する。さらに詳しくは流
動性に優れた加熱定着型の複写機もしくはプリンター用
に適した電子写真用離型剤に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mold release agent for electrophotography. More specifically, the present invention relates to an electrophotographic release agent that has excellent fluidity and is suitable for use in heat-fixing type copying machines or printers.
［従来の技術］
熱定着方式のトナーはヒートロールにより支持体上に定
着される。その際、定着下限温度は低いことが望まれる
。一方ロール温度が高くなると、トナーがロールにくっ
つく現象が現われる・このホットオフセットの起こる温
度は高いことが望まれる。一般にバインダーの分子量が
高くなるとホットオフセット温度は高くなるが同時に定
着下限温度も高くなる。逆に分子量が下がるとホットオ
フセット温度と定着下限温度共に低くなる。[Prior Art] A heat fixing toner is fixed on a support by a heat roll. In this case, it is desired that the lower limit temperature of fixing is low. On the other hand, when the roll temperature increases, a phenomenon in which toner sticks to the roll appears.It is desirable that the temperature at which this hot offset occurs is high. Generally, as the molecular weight of the binder increases, the hot offset temperature increases, but at the same time, the minimum fixing temperature also increases. Conversely, when the molecular weight decreases, both the hot offset temperature and the lower limit fixing temperature decrease.
この矛盾した要求性能を満たすための方法として離型剤
、たとえば低分子量ポリプロピレンを添加してホットオ
フセット温度を高めた電子写真用トナーが知られている
（例えば特公昭５２−３３０４号公報）。As a method for satisfying this contradictory performance requirement, an electrophotographic toner is known in which a release agent, such as low molecular weight polypropylene, is added to increase the hot offset temperature (for example, Japanese Patent Publication No. 3304/1982).
［発明が解決しようとする課題］
しかし低分子量ポリプロピレン等のポリオレフィン樹脂
を添加するとトナーの流動性が低下しさらにはトナーが
凝集し複写機内でトナーの供給が十分に行なわれない場
合がある。[Problems to be Solved by the Invention] However, when a polyolefin resin such as low molecular weight polypropylene is added, the fluidity of the toner decreases, and furthermore, the toner aggregates, and the toner may not be sufficiently supplied within the copying machine.
［課題を解決するための手段］
本発明者はトナーの流動性を低下させることなくホット
オフセット温度が高い電子写真用離型剤について鋭意検
討した結果、本発明に到達した。すなわち本発明は、ア
イソタクティック含量が９０％以上であり、１６つ℃に
おける溶融粘度が１０００ｃｐｓ以下であるポリプロピ
レン系樹脂からなることを特徴とする電子写真用離型剤
である。[Means for Solving the Problems] The inventors of the present invention have arrived at the present invention as a result of intensive studies on a release agent for electrophotography that has a high hot offset temperature without reducing the fluidity of toner. That is, the present invention is a mold release agent for electrophotography characterized by being made of a polypropylene resin having an isotactic content of 90% or more and a melt viscosity of 1000 cps or less at 16°C.
本発明に係わるアイソタクティック含量が９０％以上の
ポリプロピレン系樹脂を得るには、例えば１）アイソタ
クティック含量が９０％以上の高分子量ポリプロピレン
系＠脂を熱減成するが、２）アイソタクティック含量９
０％未満の低分子量ポリプロピレン系樹脂（１６０℃に
おける溶融粘度が１０００ｃｐｓ以下のもの）を溶剤で
抽出処理することによって得られる。In order to obtain the polypropylene resin with an isotactic content of 90% or more according to the present invention, for example, 1) a high molecular weight polypropylene resin with an isotactic content of 90% or more is thermally degraded; Tick content 9
It is obtained by extracting a low molecular weight polypropylene resin (having a melt viscosity of 1000 cps or less at 160° C.) with a solvent.
１）のアイソタクティック含量が９０％以上の高分子量
ポリプロピレン系樹脂を熱減成し製造する場合、原料と
なる高分子量ポリプロピレン系樹脂としては、メルトイ
ンデックスが通常０．１〜１００、好ましくは１〜５０
のものが使用される。また原料となる高分子量ポリプロ
ピレン系樹脂の組成としてはプロピレンと他のオレフィ
ンの共重合体も使用することができる。他のオレフィン
としでは、エチレン、ブテン、オクテン等が挙げられる
。他のオレフィンの含有量は、通常２０重量％以下、好
ましくは８重量％以下である。When manufacturing a high molecular weight polypropylene resin with an isotactic content of 90% or more in 1) by heat degradation, the high molecular weight polypropylene resin used as a raw material usually has a melt index of 0.1 to 100, preferably 1. ~50
are used. Furthermore, copolymers of propylene and other olefins can also be used as the composition of the high molecular weight polypropylene resin used as the raw material. Other olefins include ethylene, butene, octene, and the like. The content of other olefins is usually 20% by weight or less, preferably 8% by weight or less.
２０重量％を越えるとトナーとした際、離型性能が不十
分となる。熱減成は、高分子量ポリプロピレン系樹脂を
、熱の加わり方が均一である管状反応器等を用い、３０
０〜４５０℃で０゜５〜１０時間で通過させることによ
り行なうことができる。熱減成物の溶融粘度は、熱減成
温度と熱減成時間で調整することができる。３００ ’
Ｃ未満では低溶融粘度化に時間を要し、４５０℃を越え
ると低溶融粘度化が短時間に起こりコントロールが困難
となる。If it exceeds 20% by weight, the release performance will be insufficient when used as a toner. Thermal degradation is performed using a tubular reactor that applies heat uniformly to high molecular weight polypropylene resin.
This can be carried out by passing the film at 0° to 450° C. for 5 to 10 hours. The melt viscosity of the thermally degraded product can be adjusted by the thermally degraded temperature and thermally degraded time. 300'
If it is less than C, it takes time to lower the melt viscosity, and if it exceeds 450°C, the melt viscosity decreases in a short time and becomes difficult to control.
２）の低分子量ポリプロピレン系樹脂を溶剤で抽出処理
する場合、その方法としては例えば低分子量ポリプロピ
レン系樹脂の粉末に溶剤を加えて攪拌しながら還流加熱
し室温まで冷却後溶剤及び溶剤可溶分を分離除去し溶剤
不溶分を乾燥する方法が挙げられる。溶剤としてはメチ
ルエチルケトン、アセトン等のケトン系溶剤、ジオキサ
ン等のエーテル系溶剤、メタノール、エタノール等のア
ルコール系溶剤、トルエン、キシレン等の芳香族系、ペ
ンタン、ヘプタン等の脂肪族系、クロロホルム、四塩化
炭素等の塩素系溶剤等、およびこれらの混合物を使用す
ることができる。溶剤と低分子量ポリプロピレン系樹脂
の重量比は通常０．５：１．０〜２０．０：１．０また
加熱還流時間は通常１〜５時間である。溶剤の重量比が
増加すると、また還流加熱時開が長くなると抽出はより
完全に行なえるが反面収率が低下する傾向にある。When extracting the low molecular weight polypropylene resin in 2) with a solvent, the method is, for example, adding a solvent to the powder of the low molecular weight polypropylene resin, heating it under reflux while stirring, cooling it to room temperature, and then removing the solvent and solvent-soluble components. Examples include a method of separating and removing and drying the solvent-insoluble matter. Solvents include ketone solvents such as methyl ethyl ketone and acetone, ether solvents such as dioxane, alcohol solvents such as methanol and ethanol, aromatic solvents such as toluene and xylene, aliphatic solvents such as pentane and heptane, chloroform, and tetrachloride. Chlorinated solvents such as carbon, etc., and mixtures thereof can be used. The weight ratio of the solvent to the low molecular weight polypropylene resin is usually 0.5:1.0 to 20.0:1.0, and the heating reflux time is usually 1 to 5 hours. As the weight ratio of the solvent increases and as the period of heating under reflux increases, extraction can be carried out more completely, but on the other hand, the yield tends to decrease.
また本発明には、高分子量ポリプロピレン系樹脂の熱減
成物または低分子量ポリプロピレン系樹脂の溶剤抽出処
理物の、マレイン酸誘導体。The present invention also includes maleic acid derivatives of thermally degraded products of high molecular weight polypropylene resins or solvent extraction products of low molecular weight polypropylene resins.
（無水マレイン酸、マレイン酸ジメチルエステル、マレ
イン酸ジエチルエステル、マレイン酸ジー２−エチルヘ
キシルエステル等）付加物、高分子量ポリプロピレン系
樹脂の熱減成物または低分子量ポリプロピレン系樹脂の
溶剤抽出物の、酸化物も用いることができる。Oxidation of adducts (maleic anhydride, dimethyl maleate, diethyl maleate, di-2-ethylhexyl maleate, etc.), thermal degradation products of high molecular weight polypropylene resins, or solvent extracts of low molecular weight polypropylene resins. objects can also be used.
特に製法は、これらに限定されるものではないが製造プ
ロセスを単純化するためには上記製法のうち１）の熱減
成による方法が好ましい。In particular, the manufacturing method is not limited to these, but in order to simplify the manufacturing process, 1) of the above manufacturing methods, which involves thermal degradation, is preferred.
本発明に用いられるポリプロピレン系樹脂のアイソタク
ティック含量は９０％以上、好ましくは９３％以上であ
る。アイソタクティック含量が９０％未満のものは電子
写真用トナーとして用いた際十分なトナーの流動性が得
られず、トナーが現像機に供給できなくなることがある
。The isotactic content of the polypropylene resin used in the present invention is 90% or more, preferably 93% or more. If the isotactic content is less than 90%, sufficient toner fluidity may not be obtained when used as an electrophotographic toner, and the toner may not be supplied to a developing machine.
本発明に用いられるポリプロピレン系樹脂のアイソタク
ティック含量は、赤外分光光度計の９９８ｃｍ７１の吸
光度（Ｄｓｓａ）と９７４ｃｍ −”の吸光度（Ｄ９□
４）より下記式で求められる。The isotactic content of the polypropylene resin used in the present invention is determined by the absorbance at 998 cm71 (Dssa) measured by an infrared spectrophotometer and the absorbance at 974 cm -'' (D9□
4), it can be determined by the following formula.
アイソタクティック含量（％）
＝Ｄ９□ａ ／ Ｄ９７４ Ｘ１００
本発明に用いられるポリプロピレン系樹脂の１６０℃に
おける溶融粘度は１０００ｃｐｓ以下、好ましくは５０
０ｃｐｓ以下である。１６０℃における溶融粘度が１０
００ｃｐｓを越えるものは電子写真用トナーに用いた際
にホットオフセット効果が不良となる。ポリンプロピレ
ン系樹月旨の１６６℃における溶融粘度はブルックフィ
ールド型回転粘度計を用いて測定する。測定温度以外の
条件は、ＪＩＳ−に１５５７−１９７０に準じて行なう
。測定試料の温度調整には温度レギュレーター付きオイ
ルバスを用いる。Isotactic content (%) = D9□a / D974
It is 0 cps or less. Melt viscosity at 160°C is 10
If it exceeds 0.00 cps, the hot offset effect will be poor when used as an electrophotographic toner. The melt viscosity of the polypropylene resin at 166° C. is measured using a Brookfield rotational viscometer. Conditions other than the measurement temperature are in accordance with JIS-1557-1970. An oil bath with a temperature regulator is used to adjust the temperature of the measurement sample.
本発明の電子写真用離型剤はポリプロピレン系樹脂から
なるものであるが、必要によりバインダー、着色材料、
さらに種々の添加剤等を含有させ電子写真用トナーとす
ることができる。The electrophotographic mold release agent of the present invention is made of a polypropylene resin, but if necessary, a binder, a coloring material,
Furthermore, various additives and the like can be added to produce an electrophotographic toner.
バインダーとしてはスチレン系樹脂、例えばスチレン系
樹脂としてはスチレン系Ｒ量体と（メタ）アクリル酸エ
ステル系単量体、その他の単量体との共重合体を挙げる
ことができる。スチレン系単量体としては、スチレン、
アルキルスチレン（例えばα−メチルスチレン、ｐ−メ
チルスチレン）等が挙げられる。このうち好ましいもの
はスチレンである。（メタ）アクリル酸エステル系単量
体としてはアルキル（メタ）アクリレート（アクリルの
炭素数が１〜１８のもの、メチル（メタ）アクリレート
、エチル（メタ）アクリレート、ブチル（メタ）アクリ
レート、２−エチルヘキシル（メタ）アクリレート、ラ
ウリル（メタ）アクリレート、ステアリル（メタ）アク
リレート等）、ヒドロキシル基含有（メタ）アクリレー
ト（ヒドロキシルエチル（メタ）アクリレート等）、ア
ミノ基含有（メタ）アクリレート（ジメチルアミノエチ
ル（メタ）アクリート、ジエチルアミノエチル（メタ）
アクリレート等）、およびこれらの２種以上の混合物等
を挙げることができる。このうち好ましいものはアルキ
ル（メタ）アクリレートである。Examples of the binder include styrene resins, such as copolymers of styrene R-mers, (meth)acrylic acid ester monomers, and other monomers. Examples of styrenic monomers include styrene,
Examples include alkylstyrenes (eg, α-methylstyrene, p-methylstyrene), and the like. Among these, styrene is preferred. Examples of (meth)acrylic acid ester monomers include alkyl (meth)acrylates (acrylic having 1 to 18 carbon atoms, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, etc.), hydroxyl group-containing (meth)acrylate (hydroxylethyl (meth)acrylate, etc.), amino group-containing (meth)acrylate (dimethylaminoethyl (meth)acrylate, etc.) Acryte, diethylaminoethyl (meth)
acrylate, etc.), and mixtures of two or more of these. Among these, preferred are alkyl (meth)acrylates.
他の単量体（ビニルエステル（酢酸ビニル等）、ビニル
エーテル（ビニルエチルエーテル等）、脂肪族炭化水素
系ビニル（α−オレフィン、ブタジェン等）、ニトリル
基含有ビニル化合物（（メタ）アクリロニトリル等）、
Ｎ−ビニル化合物（Ｎ−ビニルピロリドン等）、不飽和
カルボン酸もしくはその無水物（（メタ）アクリル酸、
無水マレイン酸、無水イタコン酸等）等）もスチレン系
単量体もしくはスチレン系単量体と（メタ）゛アクリル
酸エステル系単量体の混合物との共重合体であっても構
わない。他の単量体の量は全単量体の重量に基づいて通
常２０重重量以下、好ましくは１０重重量以下である。Other monomers (vinyl esters (vinyl acetate, etc.), vinyl ethers (vinylethyl ether, etc.), aliphatic hydrocarbon vinyls (α-olefin, butadiene, etc.), nitrile group-containing vinyl compounds ((meth)acrylonitrile, etc.),
N-vinyl compounds (N-vinylpyrrolidone, etc.), unsaturated carboxylic acids or their anhydrides ((meth)acrylic acid,
Maleic anhydride, itaconic anhydride, etc.) may also be a copolymer of a styrene monomer or a mixture of a styrene monomer and a (meth)acrylate monomer. The amount of other monomers is usually less than 20 weights, preferably less than 10 weights, based on the weight of total monomers.
共重合体は通常、溶液重合、懸濁重合、もしくは塊状重
合にて製造できる。重合開始剤にはアゾ系開始剤（アゾ
ビスイソブチロニトリル、アゾビスイソバレロニトリル
等）、過酸化物系開始剤（ベンゾイルパーオキサイド、
ラウロイルパーオキサイド、ジ−ｔ−ブチルパーオキサ
イド、ｔ−ブチルクミルパーオキサイド、ジクミルパー
オキサイド、ｔ−ブチルパーオキシベンゾエート、１．
１−ビス（ｔ−ブチルパーオキシ） ３，３．５−トリ
メチルシクロヘキサン等）が挙げられる。Copolymers can usually be produced by solution polymerization, suspension polymerization, or bulk polymerization. Polymerization initiators include azo initiators (azobisisobutyronitrile, azobisisovaleronitrile, etc.), peroxide initiators (benzoyl peroxide,
lauroyl peroxide, di-t-butyl peroxide, t-butylcumyl peroxide, dicumyl peroxide, t-butyl peroxybenzoate, 1.
1-bis(t-butylperoxy) 3,3.5-trimethylcyclohexane, etc.).
重合反応は通常窒素等の不活性気体の雰囲気下で行なわ
れる５重合塩度は通常５０〜２２０℃、好ましくは７０
〜２００℃である。The polymerization reaction is usually carried out in an atmosphere of an inert gas such as nitrogen.
~200°C.
反応時間は他の条件に左右されるが、通常１〜５０時間
、好ましくは２〜１０時間である。反応時間が１時間よ
り短いと反応のコントロールが゛難しく、５０時間を越
えると経済的に不利である。重合時溶媒を使用した場合
は反応後説溶媒する。The reaction time depends on other conditions, but is usually 1 to 50 hours, preferably 2 to 10 hours. When the reaction time is shorter than 1 hour, it is difficult to control the reaction, and when it exceeds 50 hours, it is economically disadvantageous. If a solvent is used during polymerization, use the solvent after the reaction.
着色剤としてはカーボン、鉄黒、ベンジジンイエロー、
キナクドリン、ローダミンＢ、フタロシアニン等が挙げ
られる。磁性粉として鉄、コバルト、ニッケル等の強磁
性金属の粉末もしくはマグネタイト、ヘマタイト、フェ
ライト等を用いてもよい。Colorants include carbon, iron black, benzidine yellow,
Examples include quinacudrine, rhodamine B, and phthalocyanine. As the magnetic powder, powder of a ferromagnetic metal such as iron, cobalt, or nickel, or magnetite, hematite, ferrite, or the like may be used.
さらに種々の添加剤としては荷電調整剤にグロシン、四
級アンモニウム塩等）等が挙げられる。Furthermore, various additives include charge control agents such as glosine and quaternary ammonium salts.
電子写真用トナーの成分としては本発明の離型剤を通常
０．５〜３０重量％、好ましくは１〜５重量％、バイン
ダーを通常４５〜９５重量％、好ましくは７０〜９０重
量％、着色材料を通常３〜５０重量％等を用いる。The components of the electrophotographic toner include usually 0.5 to 30% by weight of the release agent of the present invention, preferably 1 to 5% by weight, usually 45 to 95% by weight of a binder, preferably 70 to 90% by weight, and coloring. The amount of the material used is usually 3 to 50% by weight.
本発明の離型剤の添加方法はトナー製造時に加えてもバ
インダーに予め混合した形で用いてもよい。またバイン
ダー重合時、他成分と共に系に加えても構わない。The release agent of the present invention may be added during toner production or may be mixed in advance with the binder. Further, during binder polymerization, it may be added to the system together with other components.
電子写真用トナーの製造は１）前記トナー成分を乾式ブ
レンドした後、溶融混練されその後粗粉砕され、最終的
にジェット粉砕機を用いて微粉化し、さらに分級し粒径
が通常２〜２０μの微粉として得るか、２）バインダー
成分の単量体を他のトナー成分存在下で、懸濁重合し粒
径が通常２〜２０μの微粉を得ることによっても得るこ
とができるが、特に製法はこれらに限定されるものでは
ない。The production of toner for electrophotography is as follows: 1) After dry blending the toner components, the toner components are melt-kneaded, then coarsely pulverized, and finally pulverized using a jet pulverizer, and further classified to produce a fine powder with a particle size of usually 2 to 20 μm. 2) It can also be obtained by suspension polymerizing the monomer of the binder component in the presence of other toner components to obtain a fine powder with a particle size of usually 2 to 20 μm. It is not limited.
前記電子写真用トナーは必要に応じて鉄粉、ガラスピー
ズ、ニッケル粉、フェライト等のキャリアー粒子と混合
されて電気的潜像の現像剤として用いられる。また粉体
の流動性改良のため疏水性コロイダルシリカ微粉末を用
いることもできる。The toner for electrophotography is mixed with carrier particles such as iron powder, glass beads, nickel powder, ferrite, etc., if necessary, and used as a developer for an electrical latent image. Furthermore, hydrophobic colloidal silica fine powder can also be used to improve the fluidity of the powder.
前記電子写真用トナーは複写機たとえば加熱定着型の複
写機またはプリンターの熱定着用ヒートロール部で加熱
されることによって支持体（紙、ポリエステルフィルム
等）に定着し記録材料とされる。The toner for electrophotography is heated in a heat fixing heat roll section of a copying machine, such as a heat fixing type copying machine or a printer, and thereby fixed on a support (paper, polyester film, etc.) to form a recording material.
［実施例］
以下実施例により本発明をさらに説明するが本発明はこ
れにより限定されるものではない。[Examples] The present invention will be further explained below with reference to Examples, but the present invention is not limited thereto.
実施例中、部はいずれも重量部を現す。In the examples, all parts represent parts by weight.
実施例１
アイソタフティク含量９３％の高分子量ポリプロピレン
をスタチックミキサーを組み込んだ管に連続的に通しな
がら３５５〜３６０℃で８０分間熱減成を行ないアイソ
タクティック含量９６％、１６０℃での溶融粘度が７０
ｃｐｓのポリプロピレン系樹脂からなる本発明の離型剤
を得た。Example 1 A high molecular weight polypropylene with an isotactic content of 93% was thermally degraded at 355 to 360°C for 80 minutes while passing continuously through a tube equipped with a static mixer to obtain a polypropylene with an isotactic content of 96% at 160°C. Melt viscosity is 70
A mold release agent of the present invention made of cps polypropylene resin was obtained.
実施例２
アイソタフティク含量８５％の低分子量ポリプロピレン
（三洋化成製ビスコール６６０Ｐ、 １６０℃での溶融
粘度１７０ｃｐｓ ）粉末１００部にトルエン３００部
を加えた攪拌しながら還流加熱した。室温まで冷却後ト
ルエン可溶分を口過により分離除去しアイソタクティッ
ク含量９３％、 １６０℃での溶融粘度が２４０ｃｐｓ
のポリプロピレン系樹脂からなる本発明の離型剤を得た
。Example 2 300 parts of toluene was added to 100 parts of low molecular weight polypropylene powder (Viscol 660P manufactured by Sanyo Chemical Co., Ltd., melt viscosity 170 cps at 160°C) having an isotaftic content of 85%, and the mixture was heated under reflux while stirring. After cooling to room temperature, the toluene soluble content was separated and removed by filtration, resulting in an isotactic content of 93% and a melt viscosity of 240 cps at 160°C.
A mold release agent of the present invention consisting of a polypropylene resin was obtained.
比較例１
実施例１の高分子量ポリプロピレンをスタチックミキサ
ーを組み込んだ管に連続的に通しながら３４５〜３５０
℃で５０分間熱減成を行ないアイソタクティック含！９
６％、１６０℃での溶融粘度が１５００ｃｐｓのポリプ
ロピレン系樹月旨からなる離型剤を得た。Comparative Example 1 While continuously passing the high molecular weight polypropylene of Example 1 through a tube incorporating a static mixer,
Contains isotactic after heat degradation at ℃ for 50 minutes! 9
A mold release agent consisting of a polypropylene resin having a melt viscosity of 6% and a melt viscosity of 1500 cps at 160° C. was obtained.
参考例１
スチレン６６０部、ブチルアクリレート３４０部溶剤、
重合開始剤を用いず１３０〜１８０℃で熱重合を行ない
バインダーを得た。バインダーのＴｇが５３℃、数平均
分子量は１１０００、重量平均分子量は７００００であ
った。分子量の測定はＧＰＣ法により行なった。ＧＰＣ
法によるバインダーの分子量測定は以下の条件で行なっ
た。Reference Example 1 660 parts of styrene, 340 parts of butyl acrylate, solvent,
A binder was obtained by performing thermal polymerization at 130 to 180°C without using a polymerization initiator. The binder had a Tg of 53° C., a number average molecular weight of 11,000, and a weight average molecular weight of 70,000. The molecular weight was measured by GPC method. GPC
The molecular weight measurement of the binder by the method was carried out under the following conditions.
装置 ：東洋曹達製 ＨＬＣ８０２Ａカラム ：
ＴＳＫ ｇｅｌ ＧＭＨ６２本測定温度 ：２５℃
試料溶液 ： ｏ、ｓｖｔ％のＴＨＦ溶液溶液注入量
：２００μｍ
検出装置 ：屈折率検出器
参考例２
実施例１の離型剤および参考例１のバインダーを用いて
以下の方法により電子写真用トナーを作製した。さらに
、電子写真現像剤を作製した。Equipment: Toyo Soda HLC802A column:
TSK gel GMH62 pieces Measurement temperature: 25°C Sample solution: o, svt% THF solution Solution injection amount: 200 μm Detection device: Refractive index detector Reference Example 2 Using the mold release agent of Example 1 and the binder of Reference Example 1 An electrophotographic toner was produced by the following method. Furthermore, an electrophotographic developer was produced.
トナー作製方法
バインダー ８７部実施例１の離型
剤 ４部
カーボンブラック ８部（三菱化成工業
製（株）製ＭＡ（００）荷電調整剤
１部（保土谷化学工業（株）製
スピロンブラックＴＲＨ）
上記配合物を粉体ブレンドしたのちラボプラストミルで
１４０℃、３０ｒｐｍで１０分間混練し、混線物をジェ
ットミルＰＪＭ１００ （日本ニューマチック社製）で
微粉砕した。粉体気流分級機ＭＳＤ （日本二ニーマチ
ック社製）で微粉砕物から２μ以下の微粉をカットした
。得られた粉体１０００部にアエロジルＲ９７２（日本
アエロジル）３部を均一混合してトナーを得た。Toner Preparation Method Binder: 87 parts Release agent of Example 1: 4 parts Carbon black: 8 parts (manufactured by Mitsubishi Chemical Industries, Ltd. MA (00) Charge control agent
1 part (Spiron Black TRH manufactured by Hodogaya Chemical Co., Ltd.) The above mixture was powder-blended, then kneaded for 10 minutes at 140°C and 30 rpm in a Labo Plastomill, and the mixed material was mixed in a jet mill PJM100 (Japan Pneumatic Co., Ltd.). The powder was pulverized using Fine powder of 2 μm or less was cut from the finely pulverized material using a powder air classifier MSD (manufactured by Nippon Ninimatic Co., Ltd.). A toner was obtained by uniformly mixing 3 parts of Aerosil R972 (Nippon Aerosil) with 1000 parts of the obtained powder.
現像剤作製方法
上記トナー２５部に電子写真用キャリアー鉄粉（日本鉄
粉社製Ｆ−１００） １０００部を混合して電子写真用
現像剤を得た。Method for Preparing Developer 25 parts of the above toner was mixed with 1000 parts of carrier iron powder for electrophotography (F-100 manufactured by Nippon Tetsuko Co., Ltd.) to obtain a developer for electrophotography.
参考例３
実施例１の離型剤を実施例２の離型剤をにする以外は同
様の方法により電子写真用現像剤を得た。Reference Example 3 An electrophotographic developer was obtained in the same manner except that the mold release agent of Example 1 was replaced with the mold release agent of Example 2.
比較参考例１〜２
実施例１の離型剤を各々比較例１の離型剤および低分子
量ポリプロピレン（ビスコール６６０Ｐ三洋化成工業製
）とする以外は同様の方法で比較電子写真用現像剤（１
）〜（２）を得た２各現像剤の評価結果を表−１に示す
。Comparative Reference Examples 1 to 2 Comparative electrophotographic developer (1
Table 1 shows the evaluation results for each of the two developers obtained in (2) to (2).
表−１現像剤の評価
ビスコール：ビスコール６６０Ｐ
注）流動性
ホソカワミクロン社製パウダーテスターを用いて流動性
指数を測定し評価した。Table 1 Evaluation of developer Viscole: Viscole 660P Note) Fluidity The fluidity index was measured and evaluated using a powder tester manufactured by Hosokawa Micron.
Ｅ 流動性指数８０以上 Ｇ 流動性指数７０以上８０未満 Ｐ 流動性指数７０未満 たけホットオフセット性 市販の熱定着方式の複写機を月い、 ホットオフセットが発生するヒート ロールの温度で評価した。E Liquidity index 80 or more G. Liquidity index: 70 or more and less than 80 P Liquidity index less than 70 Take hot offset property I bought a commercially available heat-fixing copier, Heat that causes hot offset The evaluation was based on the temperature of the roll.
良好 ２２０℃以上
不良 ２２０℃未満
キャリアーへのフィルミング
現像剤をターブラシ二カーミキサー
で３時間１１００ｒｐ混合した後、キャリアー表面に付
着しているトナーの量を顕微鏡で観察した。Good: 220° C. or higher Poor: Below 220° C. Filming onto the carrier After mixing the developer at 1100 rpm for 3 hours with a turbo brush mixer, the amount of toner adhering to the surface of the carrier was observed using a microscope.
本発明の離型剤を含んだ電子写真用トナーはトナーの流
動性やロホットオフセット性に優れているのみならずキ
ャリアーへのトナー付着（キャリアーへのフィルミング
）も少ないことが確認できた。It was confirmed that the electrophotographic toner containing the release agent of the present invention not only has excellent toner fluidity and low hot offset properties, but also has little toner adhesion to the carrier (filming to the carrier).
［発明の効果コ[Effects of invention
Claims (1)
０℃における溶融粘度が１０００ｃｐｓ以下であるポリ
プロピレン系樹脂からなることを特徴とする電子写真用
離型剤。1. Isotactic content is 90% or more, 16
A mold release agent for electrophotography, comprising a polypropylene resin having a melt viscosity of 1000 cps or less at 0°C.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1-199755 | 1989-07-31 | ||
| JP19975589 | 1989-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03121460A true JPH03121460A (en) | 1991-05-23 |
Family
ID=16413088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2188800A Pending JPH03121460A (en) | 1989-07-31 | 1990-07-16 | Electrophotographic releasing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03121460A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658999A (en) * | 1992-04-01 | 1997-08-19 | Mitsui Toatsu Chemicals, Inc. | Syndiotactic polypropylene wax, production process thereof, and heating roll fixing-type toner composition making use of the wax |
| JP2003337442A (en) * | 2002-05-20 | 2003-11-28 | Toyo Ink Mfg Co Ltd | Urethane-modified polyester resin containing release agent for toner and electrostatic charge image developing toner and two-component electrophotographic developer using the same |
-
1990
- 1990-07-16 JP JP2188800A patent/JPH03121460A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658999A (en) * | 1992-04-01 | 1997-08-19 | Mitsui Toatsu Chemicals, Inc. | Syndiotactic polypropylene wax, production process thereof, and heating roll fixing-type toner composition making use of the wax |
| US5677409A (en) * | 1992-04-01 | 1997-10-14 | Mitsui Toatsu Chemicals, Inc. | Syndiotactic polypropylene wax, production process thereof, and heating roll fixing-type toner composition making use of the wax |
| JP2003337442A (en) * | 2002-05-20 | 2003-11-28 | Toyo Ink Mfg Co Ltd | Urethane-modified polyester resin containing release agent for toner and electrostatic charge image developing toner and two-component electrophotographic developer using the same |
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