IN2014CN03889A - - Google Patents

Info

Publication number
IN2014CN03889A
IN2014CN03889A IN3889CHN2014A IN2014CN03889A IN 2014CN03889 A IN2014CN03889 A IN 2014CN03889A IN 3889CHN2014 A IN3889CHN2014 A IN 3889CHN2014A IN 2014CN03889 A IN2014CN03889 A IN 2014CN03889A
Authority
IN
India
Prior art keywords
cyclo
solvents
relates
novel method
aliphatic diisocyanates
Prior art date
Application number
Other languages
English (en)
Inventor
Harald Schäfer
Horst Binder
Thomas Genger
Daniel Flojhar
Original Assignee
Basf Se
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 Basf Se filed Critical Basf Se
Publication of IN2014CN03889A publication Critical patent/IN2014CN03889A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
    • C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0091—Complexes with metal-heteroatom-bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/02—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
    • C08G18/022—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only the polymeric products containing isocyanurate groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/0838—Manufacture of polymers in the presence of non-reactive compounds
    • C08G18/0842—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents
    • C08G18/0847—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers
    • C08G18/0852—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of solvents for the polymers the solvents being organic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/1875—Catalysts containing secondary or tertiary amines or salts thereof containing ammonium salts or mixtures of secondary of tertiary amines and acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/24—Catalysts containing metal compounds of tin
    • C08G18/242—Catalysts containing metal compounds of tin organometallic compounds containing tin-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/134—Phenols containing ester groups
    • C08K5/1345—Carboxylic esters of phenolcarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/41—Compounds containing sulfur bound to oxygen
    • C08K5/42—Sulfonic acids; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Paints Or Removers (AREA)
IN3889CHN2014 2011-10-28 2012-10-18 IN2014CN03889A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11187007 2011-10-28
PCT/EP2012/070624 WO2013060614A1 (de) 2011-10-28 2012-10-18 Farbstabile härterzusammensetzungen enthaltend polyisocyanate (cyclo)aliphatischer diisocyanate

Publications (1)

Publication Number Publication Date
IN2014CN03889A true IN2014CN03889A (pt) 2015-10-16

Family

ID=47143854

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3889CHN2014 IN2014CN03889A (pt) 2011-10-28 2012-10-18

Country Status (5)

Country Link
EP (1) EP2771376B1 (pt)
JP (1) JP6370221B2 (pt)
CN (2) CN104024296B (pt)
IN (1) IN2014CN03889A (pt)
WO (1) WO2013060614A1 (pt)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9617402B2 (en) 2011-10-28 2017-04-11 Basf Se Process for preparing polyisocyanates which are flocculation-stable in solvents from (cyclo)aliphatic diisocyanates
ES2720033T3 (es) 2015-04-21 2019-07-17 Covestro Deutschland Ag Mezcla de poliisocianato a base de 1,5-diisocianatopentano
FR3042195B1 (fr) * 2015-10-09 2017-11-24 Arkema France Oligomere ionique et composition polymerisable le contenant pour materiaux hydro-fragmentables a usage provisoire
EP3305824A1 (de) 2016-10-07 2018-04-11 Basf Se Farbstabile härterzusammensetzungen enthaltend polyisocyanate (cyclo)aliphatischer diisocyanate
JP6641497B2 (ja) 2016-10-14 2020-02-05 旭化成株式会社 イソシアネート組成物、イソシアネート重合体の製造方法およびイソシアネート重合体
US11548975B2 (en) 2016-10-14 2023-01-10 Asahi Kasei Kabushiki Kaisha Isocyanate composition and method for producing isocyanate polymer
US11118001B2 (en) 2016-10-14 2021-09-14 Asahi Kasei Kabushiki Kaisha Isocyanate composition, method for producing isocyanate composition, and method for producing isocyanate polymer
CN114195971B (zh) * 2016-10-14 2023-08-25 旭化成株式会社 多异氰酸酯组合物、封端多异氰酸酯组合物、亲水性多异氰酸酯组合物、涂料组合物和涂膜
JP2018070689A (ja) * 2016-10-25 2018-05-10 東ソー株式会社 ポリイソシアネート組成物およびそれを用いた塗料組成物
WO2018079428A1 (ja) * 2016-10-25 2018-05-03 東ソー株式会社 ポリイソシアネート組成物およびそれを用いた塗料組成物、及び該ポリイソシアネート組成物の製造方法
JP6926489B2 (ja) * 2017-01-25 2021-08-25 東ソー株式会社 変性有機ポリイソシアネートの製造方法
EP3421516A1 (de) * 2017-06-28 2019-01-02 Covestro Deutschland AG Gefärbte kunststoffe basierend auf vernetzten polyisocyanaten
EP3431521A1 (de) * 2017-07-20 2019-01-23 Basf Se Farbstabile härterzusammensetzungen enthaltend polyisocyanate (cyclo)aliphatischer diisocyanate
EP3336118A1 (de) 2017-09-20 2018-06-20 Basf Se Farbstabile härterzusammensetzungen enthaltend polyisocyanate (cyclo)aliphatischer diisocyanate
CN112204065B (zh) * 2018-05-17 2023-03-28 科思创知识产权两合公司 制备多异氰酸酯聚合物和聚异氰脲酸酯塑料的方法
CN110982045B (zh) * 2019-11-21 2022-01-07 万华化学集团股份有限公司 一种低粘度且低色号的异氰酸酯固化剂、制备方法及应用
US20230095196A1 (en) * 2020-01-30 2023-03-30 Basf Se Color-stable curing agent compositions comprising water-dispersible polyisocyanates
CN112239416B (zh) * 2020-11-02 2022-09-16 万华化学集团股份有限公司 一种低水解氯和水解溴的甲苯二异氰酸酯的制备工艺
CN114196311B (zh) * 2021-12-28 2022-05-31 株洲市九华新材料涂装实业有限公司 轨道交通玻璃钢材料用改性聚氨酯厚涂漆及其制备方法
EP4414400A1 (de) * 2023-02-09 2024-08-14 Covestro Deutschland AG Polyisocyanate mit verbesserten eigenschaften

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314788A1 (de) 1983-04-23 1984-10-25 Basf Ag, 6700 Ludwigshafen Mehrstufenverfahren zur herstellung von hexamethylendiisocyanat-1,6 und/oder isomeren aliphatischen diisocyanaten mit 6 kohlenstoffatomen im alkylenrest
DE3314790A1 (de) 1983-04-23 1984-10-25 Basf Ag, 6700 Ludwigshafen Mehrstufenverfahren zur herstellung von 3-isocyanatomethyl-3,5,5-trimethyl-cyclohexylisocyanat
DE3828033A1 (de) 1988-08-18 1990-03-08 Huels Chemische Werke Ag Kreislaufverfahren zur herstellung von (cyclo)aliphatischen diisocyanaten
JP2524223B2 (ja) * 1989-06-23 1996-08-14 日本ポリウレタン工業株式会社 イソシアヌレ―ト環を有する有機ポリイソシアネ―ト変性体の製造方法
JPH0832759B2 (ja) * 1989-05-16 1996-03-29 日本ポリウレタン工業株式会社 液状で安定なイソシアヌレート環を有する芳香族ポリイソシアネート変性体の製造法
CA2018803C (en) 1989-06-23 2001-05-15 Christian Zwiener A process for the production of polyurethane coatings
DE4331083A1 (de) 1993-09-13 1995-03-16 Basf Ag Lagerstabile, nach phosgenfreien Verfahren erhältliche Polyisocyanatzusammensetzungen, ein Verfahren zu ihrer Herstellung und ihre Verwendung
DE19630903A1 (de) 1996-08-01 1998-02-05 Bayer Ag Verfahren zur Farbstabilisierung von Isocyanaten mittels einer Kombination von speziellen Phosphorverbindungen mit 2,6-Di-tert.-butyl-4-methyl-phenol
US6376584B1 (en) 1999-02-25 2002-04-23 Ciba Specialty Chemicals Corporation Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith
JP4641577B2 (ja) * 1999-10-08 2011-03-02 旭化成ケミカルズ株式会社 ウレタン被覆組成物
DE10013187A1 (de) 2000-03-17 2001-10-11 Basf Ag Hochfunktionelle Polyisocyanata
DE10013186A1 (de) 2000-03-17 2001-09-20 Basf Ag Polyisocyanate
JP4201582B2 (ja) * 2002-11-26 2008-12-24 旭化成ケミカルズ株式会社 イソシアヌレート基を含有するポリイソシアネート組成物
DE10308105A1 (de) 2003-02-26 2004-09-09 Bayer Aktiengesellschaft Polyurethan-Beschichtungssysteme
DE10308104A1 (de) 2003-02-26 2004-09-09 Bayer Ag Polyurethan-Beschichtungssysteme
US7122588B2 (en) 2003-03-07 2006-10-17 Sri Sports Limited Golf ball
US7297746B2 (en) 2003-07-14 2007-11-20 Rhodia Inc. Color stability of isocyanates
DE102004012571A1 (de) 2004-03-12 2005-09-29 Basf Ag Verfahren zur Herstellung von Isocyanuratgruppen aufweisenden Polyisocyanaten und ihre Verwendung
DE102005047562A1 (de) 2005-10-04 2007-04-05 Bayer Materialscience Ag Zweitkomponenten-Systeme für die Herstellung flexibler Beschichtungen
WO2008068197A1 (de) 2006-12-04 2008-06-12 Basf Se Polyisocyanatzubereitungen
WO2008116894A1 (de) 2007-03-27 2008-10-02 Basf Se Härterzusammensetzungen
HUE041930T2 (hu) * 2007-03-27 2019-06-28 Basf Se Eljárás diizocianátok színtelen izocianurátjainak elõállítására
WO2008116895A1 (de) * 2007-03-27 2008-10-02 Basf Se Härterzusammensetzungen
CN101646700B (zh) * 2007-03-27 2013-05-22 巴斯夫欧洲公司 生产二异氰酸酯的无色异氰脲酸酯的方法
DE102009005712A1 (de) * 2009-01-22 2010-07-29 Bayer Materialscience Ag Polyurethanvergussmassen
CN101786994B (zh) 2010-04-07 2013-04-03 烟台万华聚氨酯股份有限公司 一种脂肪族多异氰脲酸酯的制备方法
CN101805304B (zh) 2010-04-07 2012-05-23 烟台万华聚氨酯股份有限公司 一种通过微反应器制备脂肪族多异氰脲酸酯的方法
EP2773612B1 (de) * 2011-10-28 2018-12-12 Basf Se Verfahren zur herstellung von in lösungsmitteln flockulationsstabilen polyisocyanaten von (cyclo)aliphatischen diisocyanaten

Also Published As

Publication number Publication date
EP2771376A1 (de) 2014-09-03
WO2013060614A1 (de) 2013-05-02
EP2771376B1 (de) 2021-02-24
JP2014530944A (ja) 2014-11-20
JP6370221B2 (ja) 2018-08-08
CN104024296A (zh) 2014-09-03
WO2013060614A9 (de) 2014-02-27
CN107815087B (zh) 2023-02-28
CN107815087A (zh) 2018-03-20
CN104024296B (zh) 2017-12-01

Similar Documents

Publication Publication Date Title
IN2014CN03889A (pt)
WO2013060809A3 (de) Verfahren zur herstellung von in lösungsmitteln flockulationsstabilen polyisocyanaten von (cyclo)aliphatischen diisocyanaten
WO2013060867A3 (en) Production of heterodimeric proteins
MX2013002264A (es) Composiciones pesticidas.
SG11201700874SA (en) Method for proliferation of pancreatic progenitor cells
MY169092A (en) Reference picture list construction for video coding
WO2011163669A3 (en) Co-delivery of stimulatory and inhibitory factors to create temporally stable and spatially restricted zones
HUE041618T2 (hu) Eljárás cikloalifás diizocianátok trimerizálására
AU2012209332A8 (en) Methods and compositions for preparing noribogaine from voacangine
EP2671944A4 (en) HIGHLY FUNCTIONAL HEPATIC CELLS FROM PLURIPOTENT STEM CELLS, PROCESS FOR THE PRODUCTION THEREOF, AND METHOD FOR TESTING METABOLISM / TOXICITY OF A MEDICINAL PRODUCT
MX336160B (es) Solventes novedosos para la produccion de dispersiones de poliuretano.
EP2678421A4 (en) METHOD AND RECOMBINANT MICROORGANISMS FOR THE PRODUCTION OF CADAVERIN
EP3591040A4 (en) METHOD FOR PRODUCING PANCREATIC ANALYZER CELLS
ZA201209546B (en) Semifinished product for the production of fibre composite components based on stable polyurethane compositions
EP3564212A4 (en) ALIPHATIC ISOCYANATE PRODUCTION PROCESS
IL232912B (en) A method for producing optical elements that can be deformed and stretched and elements thus produced
PT2828235T (pt) Processo para a produção de isocianatos
EP3683205A4 (en) PROCESS FOR THE PRODUCTION OF ALIPHATIC ISOCYANATE
WO2014048776A3 (de) Wasseremulgierbare isocyanate mit verbessertem glanz
EP3029022A4 (en) Method for producing trans-bis(aminomethyl)cyclohexane, method for producing bis(isocyanatomethyl)cyclohexane, bis(isocyanatomethyl)cyclohexane, polyisocyanate composition, and polyurethane resin
WO2014100000A3 (en) Thermoplastic polyamide components, and compositions and methods for their production and installation
EP3819372A3 (en) Isolation of bona fide pancreatic progenitor cells
AU2013212209A8 (en) (1R,4R) 7-oxo-2-azabicyclo[2.2.2]oct-5-ene and derivatives thereof
PT2526085E (pt) Processo para a produção de isocianatos por dissociação térmica de carbamatos
IL221350A (en) Preparations containing isocyanurate compounds, their preparation processes and coating compositions comprising them