TOP > 外国特許検索 > POLYMER DISPERSANT FOR CELLULOSE, AQUEOUS DISPERSION TREATMENT AGENT CONTAINING SAME, READILY DISPERSIBLE CELLULOSE COMPOSITION, CELLULOSE DISPERSION RESIN COMPOSITION, AND DISPERSANT-CONTAINING RESIN COMPOSITION FOR CELLULOSE DISPERSION

POLYMER DISPERSANT FOR CELLULOSE, AQUEOUS DISPERSION TREATMENT AGENT CONTAINING SAME, READILY DISPERSIBLE CELLULOSE COMPOSITION, CELLULOSE DISPERSION RESIN COMPOSITION, AND DISPERSANT-CONTAINING RESIN COMPOSITION FOR CELLULOSE DISPERSION

外国特許コード F200010101
整理番号 4595
掲載日 2020年5月18日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2015JP060028
国際公開番号 WO 2015152188
国際出願日 平成27年3月30日(2015.3.30)
国際公開日 平成27年10月8日(2015.10.8)
優先権データ
  • 特願2014-072482 (2014.3.31) JP
発明の名称 (英語) POLYMER DISPERSANT FOR CELLULOSE, AQUEOUS DISPERSION TREATMENT AGENT CONTAINING SAME, READILY DISPERSIBLE CELLULOSE COMPOSITION, CELLULOSE DISPERSION RESIN COMPOSITION, AND DISPERSANT-CONTAINING RESIN COMPOSITION FOR CELLULOSE DISPERSION
発明の概要(英語) The purposes of the present invention are to provide a high-performance polymer dispersant that can be applied to cellulose that is a hydrophilic substance and to achieve a practical technique for obtaining a cellulose dispersion resin composition that, when the polymer dispersant for cellulose is applied to cellulose and the result is dispersed within a thermoplastic resin, makes it easier to achieve a stable dispersion of cellulose using a method that does not use a large amount of an organic solvent and that is environmentally friendly. This objective is achieved by configuring a polymer dispersant for cellulose that is a polymer compound that has a block copolymer structure that includes a segment (A) that has resin affinity and a segment (B) that has cellulose-adsorbing properties, said polymer dispersant for cellulose being synthesized by reversible chain transfer catalyzed polymerization (RTCP) in which no heavy metals, nitroxide compounds, or sulfur-based compounds are used, an organic iodine compound is used as a starting compound, and a phosphorus compound, a nitrogen compound, an oxygen compound, or a carbon compound is used as a catalyst.
従来技術、競合技術の概要(英語) BACKGROUND ART
Cellulose fibers, a substance having a basic skeleton of all plants, more than one trillion ton on earth and accumulation, can be reproduced by resource acid described above, effective utilization thereof is desired. Cellulose fibers, the lightness of the steel regardless of whether or not in 1/5, the strength of the steel 5 times or more, low coefficient of linear thermal expansion of 1/50 glass fibers having. Therefore, cellulose fibers, as a filler in the matrix of a resin or the like containing, provide mechanical strength has been proposed a technique (patent document 1). In addition, cellulose fibers have the purpose of enhancing the mechanical strength, steaming and cellulosic fibers, (CNF, the microfibrillated plant fiber) in the additive is present in a dispersed state for the agent fibrous reinforcing resin has been proposed (patent document 2). In addition, in the same manner as CNF obtained by treating cellulosic fibers as the defibration, known (CNC). Is CNF, mechanical solution of the cellulose fibers produced on the pasteboard and the fibers obtained, about 4-100 nm fiber width, fiber length 5 μm more than that of the fiber. Is CNC, such as acid hydrolysis of cellulose fibers obtained by performing a chemical treatment of a crystal, the crystal width about 10-50 nm, about 500 nm crystal length of crystal. And these CNF is CNC, collectively referred to as nano-cellulose. Nano-cellulose, a high specific surface area (250-300m2 /g) and, compared to steel and light in weight and high strength.
Nano-cellulose, and the thermal deformation is small compared to the glass. High strength and low thermal expansion nano-cellulose, and is therefore useful as sustained resource material, for example, nano-cellulose polymer materials such as resins in combination with high strength, low thermal expansion for a composite material, aerogel material, by self-organization of the chiral nematic liquid crystal phase CNC using the optical anisotropic material, the functional group is introduced into the nano-cellulose high development and of the functional material has been created. On the other hand, nano-cellulose, since the hydroxyl group-rich, strong polar hydrophilic, hydrophobic polarity versatility not inferior in view of compatibility with a resin. For this reason, the development of nano-cellulose material, by chemical treatment, surface modification of cellulose nano or nano and a functional group introduced to the cellulose, the versatility of the nano-cellulose resin to improve the compatibility of the have been studied. In other words, the versatility of the nano-cellulose to improve the dispersion property with respect to the resin has been studied.
In addition, cellulose fibers as a filler in the preparation of the resin composition can be a general purpose, and a dispersant, the dispersibility of the cellulose fibers and general-purpose resin, it is possible to improve the compatibility has been studied. In non-patent document 1, the surfactant () by adsorption, the organic solvent-dispersible is improved. In non-patent document 2, the adsorbed surfactant isotactic polypropylene (iPP) as a reinforcement material and the production of composite materials, less than about 1.4 times alone iPP and the tensile strength is improved. In the above-mentioned Patent Document 2, of the thermoplastic resin in the case of using cellulose as a reinforcing material, thereby suppressing generation of aggregates of cellulose, for the purpose of uniformly dispersing the cellulose resin, and a hydrophilic cellulose fiber and a specific HLB and (hydrophilic-lipophilic balance) value additive having used (low-molecular-weight surfactant), a cellulose fiber in the additive is causing a dispersed state.
Both with the above described prior example, a low molecular weight compound as a dispersant using attempting to improve the dispersibility of nano-cellulose. On the other hand, the inventors of the present invention, a fine pigment with a resin or a hydrophobic material, dispersed in the aqueous medium has been developed for high-molecular dispersant, simple, a large amount of organic solvent is not employed environment in a manner is also taken into consideration, cellulose with a hydrophilic substance can be applied to, are very useful in practical and has resulted in the recognition. However, as described above, the polymer dispersant is a conventional, fine hydrophobic material such as a pigment dispersing resin for the purpose of moderate whereas, cellulose, hydrophilic substances, in addition, light and easy to agglomerate, especially commodity and is hard to be dispersed in the resin, in order to disperse a pigment in the same manner as conventional of the polymeric dispersant cannot be applied. That is, in order to achieve the object described above, having the characteristics as described above with respect to the cellulose, capable of exhibiting the desired functionality of the polymeric dispersant structure development is required.
Here, a general-purpose resin to the dispersion of the cellulose, if it is possible to use a polymeric dispersant, such as those listed below are considered to be technically advantageous. First, a wide variety of structural design of the polymer of the monomer can be designed so that, for the purpose, the use of the molecule and it becomes possible to design point. That is, an infinite number of design of the structure of the polymer as a dispersant and thus it is possible, by the design of the monomer, e.g. the type of the dispersing adapted, synthesis of the dispersant of the higher performance can be expected. The polymeric dispersant may include, olefin-based polymer, acrylic polymer, ester-based polymer, a urethane-based polymer or the like, various types of contemplated for use. In which, in particular acrylic polymer, polymerized at mild conditions the polymer can be obtained relatively easily, in addition, a wide variety due to the presence of acryl-based monomer, the formulation of infinite compositions selected, purpose, the use of molecular design and can be easily, expected to be more useful.
Therefore, the inventors of the present invention, the acrylic polymer and cellulose polymer dispersant for review are performed. Further, in this case, has a hydroxyl group rich, hydrophobic polarity not inferior in compatibility with general-purpose resin useful for dispersion of the cellulose, an acrylic polymer having a specific structure in order to obtain, precise synthesis methods is expected to be necessary. Therefore, an acrylic polymer having a specific structure can be produced by living radical polymerization known synthetic method was considered to be suitable to use. That is, in living radical polymerization method, by stabilized terminated radicals, the radical polymerization side reaction to prevent a coupling or disproportionation, or adjusting the molecular weight, molecular weight distribution can be narrowed. In addition, terminated radicals can be stabilized in order, after which polymerizes the monomers, followed by the addition of another monomer, polymerization is allowed to proceed can be again, can be different structure respectively, express a different functionality than the block copolymer having a polymer segment can be synthesized.
On the other hand, for the purposes of this invention in the cellulose polymer dispersant, from the following reason, functionality in its structure having different polymer segment of the block copolymer structure is believed to be useful. The block copolymer may contain, two or more different 2 component of the polymer chains of the polymeric segments is included in the present 1 structure and hence, can be adjusted so that the monomer composition, the polymer segment of each of the different functions have the advantage that the property can be given. For example, made of a different monomer composition (component) chain A and chain B A-B type block copolymers can be described by way of example, a polymer segment A (A chain), a general-purpose resin having high affinity with the component and, on the other hand, the polymer segment B (B chain), having a component adsorbed cellulose so as to form a block copolymer A-B is designed, the copolymer can be used as the dispersing agent, chain A and chain B may effectively act, versatility to the suppression of aggregation of cellulose in the resin, dispersion stability can be expected. That is, the adsorptive cellulose resin affinity segment A and segment B A-B block copolymer having a cellulose dispersion of the resin composition when used as the dispersing agent, such as a molded body of various general-purpose resin used into the cellulose dispersion becomes excellent, the mechanical strength of the molded body as the filler is expected to be enhanced sufficiently.
As described above, such in the synthesis of the block copolymer, living radical polymerization method would be suitable. As living radical polymerization, specifically, a variety of methods such as those listed below have been reported. For example, by utilizing the binding and dissociation of the method (Nitroxide mediated polymerization hereinafter, abbreviated as NMP method), copper or ruthenium, nickel, a heavy metal such as iron, then, it can form a complex with using ligands, halogen compound atom transfer radical polymerization as a polymerization initiator compound (Atom Transfer Radical Polymerization, hereinafter abbreviated as ATRP method), dithiocarboxylic acid esters as the starting compound, the addition polymerizable monomer using a radical polymerization and reversible addition-cleavage type photopolymerization initiator and chain transfer polymerization (Reversible addition fragmentation chain transfer polymerization hereinafter, abbreviated as RAFT method), organometallic or organic tellurium, an organic antimony, antimony halide, organic germanium, a germanium halide such as a method of using a heavy metal compound (or less Degenerative transfer, abbreviated DT method) and the like are developed, extensive research is being performed.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
  • KYOTO UNIVERSITY
  • 発明者(英語)
  • IMAI Takahiro
  • AOYAGI Taiyo
  • SHIMANAKA Hiroyuki
  • TSUJII Yoshinobu
  • SAKAKIBARA Keita
  • GOTO Atsushi
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
ライセンスをご希望の方、特許の内容に興味を持たれた方は、下記までご連絡ください。

PAGE TOP

close
close
close
close
close
close