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MX2017013311A - Composiciones para formar pelicula curable que contienen componentes catalizadores encapsulados. - Google Patents

Composiciones para formar pelicula curable que contienen componentes catalizadores encapsulados.

Info

Publication number
MX2017013311A
MX2017013311A MX2017013311A MX2017013311A MX2017013311A MX 2017013311 A MX2017013311 A MX 2017013311A MX 2017013311 A MX2017013311 A MX 2017013311A MX 2017013311 A MX2017013311 A MX 2017013311A MX 2017013311 A MX2017013311 A MX 2017013311A
Authority
MX
Mexico
Prior art keywords
compositions
curable film
form curable
functional groups
film containing
Prior art date
Application number
MX2017013311A
Other languages
English (en)
Other versions
MX388133B (es
Inventor
Wang Wei
R Fenn David
J Schwartzmiller Davina
B Powell Adam
E Bowles Steven
J Moravek Scott
Original Assignee
Ppg Ind Ohio Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ppg Ind Ohio Inc filed Critical Ppg Ind Ohio Inc
Publication of MX2017013311A publication Critical patent/MX2017013311A/es
Publication of MX388133B publication Critical patent/MX388133B/es

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D153/00Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/38Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F293/00Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
    • C08F293/005Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule using free radical "living" or "controlled" polymerisation, e.g. using a complexing agent
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/06Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
    • C08F4/10Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of alkaline earth metals, zinc, cadmium, mercury, copper or silver
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/06Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
    • C08F4/12Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of boron, aluminium, gallium, indium, thallium or rare earths
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/06Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
    • C08F4/16Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of silicon, germanium, tin, lead, titanium, zirconium or hafnium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/06Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
    • C08F4/26Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of manganese, iron group metals or platinum group metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/24Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/241Preventing premature crosslinking by physical separation of components, e.g. encapsulation
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2438/00Living radical polymerisation
    • C08F2438/01Atom Transfer Radical Polymerization [ATRP] or reverse ATRP
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2438/00Living radical polymerisation
    • C08F2438/03Use of a di- or tri-thiocarbonylthio compound, e.g. di- or tri-thioester, di- or tri-thiocarbamate, or a xanthate as chain transfer agent, e.g . Reversible Addition Fragmentation chain Transfer [RAFT] or Macromolecular Design via Interchange of Xanthates [MADIX]
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2333/10Homopolymers or copolymers of methacrylic acid esters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/10Encapsulated ingredients

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Nanotechnology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Graft Or Block Polymers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Se proporcionan composiciones para formar película curable. Las composiciones comprenden: (a) un agente de curado que comprende grupos funcionales reactivos; (b) un compuesto para formar película que comprende grupos funcionales reactivos con los grupos funcionales reactivos en (a); y (c) un componente catalizador agregado a la composición para formar película curable como una dispersión de micelas en una fase continua. El componente catalizador (c) comprende un compuesto catalizador contenido dentro o encapsulado por un portador, y el compuesto catalizador y portador juntos forman las micelas en la fase continua. El portador comprende copolímeros de bloque que comprenden al menos un bloque hidrófobo derivado de monómeros hidrófobos y al menos un bloque hidrófilo derivado de (1) monómeros hidrófilos y/o (2) monómeros que contienen grupos que se pueden hacer hidrófilos después de la polimerización.
MX2017013311A 2015-04-15 2016-04-13 Composiciones para formar pelicula curable que contienen componentes catalizadores encapsulados. MX388133B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/686,825 US9650480B2 (en) 2015-04-15 2015-04-15 Curable film-forming compositions containing encapsulated catalyst components
PCT/US2016/027232 WO2016168262A1 (en) 2015-04-15 2016-04-13 Curable film-forming compositions containing encapsulated catalyst components

Publications (2)

Publication Number Publication Date
MX2017013311A true MX2017013311A (es) 2018-01-25
MX388133B MX388133B (es) 2025-03-19

Family

ID=56015076

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2017013311A MX388133B (es) 2015-04-15 2016-04-13 Composiciones para formar pelicula curable que contienen componentes catalizadores encapsulados.

Country Status (12)

Country Link
US (1) US9650480B2 (es)
EP (1) EP3283539B1 (es)
JP (1) JP2018516289A (es)
KR (1) KR20170137859A (es)
CN (1) CN108541258B (es)
AU (1) AU2016250087B2 (es)
BR (1) BR112017022181A2 (es)
CA (1) CA2982559C (es)
ES (1) ES2734424T3 (es)
MX (1) MX388133B (es)
SG (1) SG11201708064VA (es)
WO (1) WO2016168262A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018162615A1 (de) * 2017-03-09 2018-09-13 Construction Research & Technology Gmbh Mikroverkapselter polyadditionskatalysator
CN111032705B (zh) * 2017-08-18 2023-07-21 罗门哈斯公司 烯烃聚合的包封催化剂和方法
JP7455116B2 (ja) 2018-10-03 2024-03-25 ザ ボード オブ トラスティーズ オブ ザ ユニバーシティ オブ イリノイ 可溶化触媒錯体の調製方法、可溶化触媒配合、および触媒オレフィン重合方法
JP7354551B2 (ja) * 2019-02-20 2023-10-03 東ソー株式会社 触媒内包ポリビニル樹脂微粒子を含む水系塗料組成物
US20200325289A1 (en) * 2019-04-15 2020-10-15 Ppg Industries Ohio, Inc. Curable film-forming compositions containing rheology modifiers comprising non-aqueous dispersions
TWI743865B (zh) * 2020-07-02 2021-10-21 國立清華大學 嵌段共聚物及其製備方法

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681811A (en) 1985-08-19 1987-07-21 Ppg Industries, Inc. Color plus clear coatings employing polyepoxides and polyacid curing agents in the clear coat
US5932285A (en) 1995-02-17 1999-08-03 Medlogic Global Corporation Encapsulated materials
US5763548A (en) 1995-03-31 1998-06-09 Carnegie-Mellon University (Co)polymers and a novel polymerization process based on atom (or group) transfer radical polymerization
US5807937A (en) 1995-11-15 1998-09-15 Carnegie Mellon University Processes based on atom (or group) transfer radical polymerization and novel (co) polymers having useful structures and properties
US5789487A (en) 1996-07-10 1998-08-04 Carnegie-Mellon University Preparation of novel homo- and copolymers using atom transfer radical polymerization
US6265489B1 (en) 1998-08-31 2001-07-24 Ppg Industries Ohio, Inc. Thermosetting compositions containing carboxylic acid functional polymers prepared by atom transfer radical polymerization
US6916488B1 (en) 1999-11-05 2005-07-12 Biocure, Inc. Amphiphilic polymeric vesicles
AUPQ679400A0 (en) * 2000-04-07 2000-05-11 Commonwealth Scientific And Industrial Research Organisation Microgel synthesis
US7064151B1 (en) 2000-04-07 2006-06-20 E. I. Du Pont De Nemours And Company Process of microgel synthesis and products produced therefrom
US6875800B2 (en) 2001-06-18 2005-04-05 Ppg Industries Ohio, Inc. Use of nanoparticulate organic pigments in paints and coatings
US6894086B2 (en) 2001-12-27 2005-05-17 Ppg Industries Ohio, Inc. Color effect compositions
JP4035449B2 (ja) * 2003-01-10 2008-01-23 キヤノン株式会社 ミセル粒子含有組成物、その薄膜及び薄膜の製造方法
US7605194B2 (en) 2003-06-24 2009-10-20 Ppg Industries Ohio, Inc. Aqueous dispersions of polymer-enclosed particles, related coating compositions and coated substrates
US7438972B2 (en) 2004-06-24 2008-10-21 Ppg Industries Ohio, Inc. Nanoparticle coatings for flexible and/or drawable substrates
FR2911877B1 (fr) 2007-01-29 2009-04-10 Arkema France Procede de preparation de particules de microgel par polymerisation radicalaire controlee en dispersion aqueuse mettant en oeuvre des agents de controle nitroxydes
FR2917308B1 (fr) * 2007-06-18 2009-12-04 Centre Nat Rech Scient Systeme catalytique, procede de fabrication et utilisation
CN101234356A (zh) * 2008-03-06 2008-08-06 北京科技大学 极性可调的导电聚苯胺微球载体负载环氧化钼催化剂的制备方法
US7871704B2 (en) 2008-09-02 2011-01-18 Ppg Industries Ohio, Inc. Multi-cure compositions comprising polythiol
CN101423565B (zh) * 2008-12-12 2010-12-15 湖南大学 一种负载型乙烯聚合催化剂及其应用方法
US8399686B2 (en) 2009-12-21 2013-03-19 Evonik Degussa Corporation Process for preparing cyclic esters comprising unsaturated functional groups and polyesters prepared from same
JP5864837B2 (ja) 2010-03-24 2016-02-17 セイコーエプソン株式会社 光重合性ポリマーミセルを含む記録液、及び記録液に用いる光重合性ポリマーミセルの製造方法
JP2011219597A (ja) * 2010-04-08 2011-11-04 Nitto Denko Corp シリコーン樹脂シート
CA2796080C (en) 2010-04-22 2018-05-22 The Governing Council Of The University Of Toronto Aqueous based process to fabricate nanostructured block copolymer films
EP2705067B1 (en) * 2011-05-03 2015-09-09 Coatings Foreign IP Co. LLC Two-component coating compositions
GB201114230D0 (en) * 2011-08-18 2011-10-05 Unilever Plc Addition copolymers and their use

Also Published As

Publication number Publication date
AU2016250087A1 (en) 2017-11-02
JP2018516289A (ja) 2018-06-21
CA2982559C (en) 2019-08-13
CA2982559A1 (en) 2016-10-20
ES2734424T3 (es) 2019-12-05
CN108541258B (zh) 2021-04-20
EP3283539A1 (en) 2018-02-21
MX388133B (es) 2025-03-19
EP3283539B1 (en) 2019-06-12
SG11201708064VA (en) 2017-10-30
US20160304678A1 (en) 2016-10-20
CN108541258A (zh) 2018-09-14
AU2016250087B2 (en) 2018-06-21
US9650480B2 (en) 2017-05-16
KR20170137859A (ko) 2017-12-13
BR112017022181A2 (pt) 2018-07-03
WO2016168262A1 (en) 2016-10-20

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