Polythiol Presentation
Transcription
Polythiol Presentation
Titelfolie THIOCURE® for Paints & Coatings, Adhesives & Sealants BRUNO BOCK THIOCHEMICALS Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Contents Bruno Bock THIOCURE® Polythiols Introduction Production Properties Thiourethane-Systems Epoxy-Systems UV- and Thiol-Ene-Systems Sealants Product Range BRUNO BOCK THIOCHEMICALS 1 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne ©Bruno Bock Privately owned enterprise, founded 1937 in Hamburg Leading position worldwide in the production of Mercaptocarboxylic Acids and their Derivatives BRUNO BOCK THIOCHEMICALS 2 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Acquisition of Evans Chemetics LP, USA in 2005 Commissioning of Technical Service Center for Coatings, Adhesives and Sealants in May 2010 Approx. 100 employees in Germany, 70 in USA BRUNO BOCK THIOCHEMICALS 3 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne THIOCURE® Trade name for Polythiols from Bruno Bock and Evans Chemetics Sulfur analogs of alcohols are called thiols More traditionally, thiols are referred to as mercaptans The functional group of a thiol is an –SH end group bonded to a carbon-atom BRUNO BOCK THIOCHEMICALS 4 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Thiocure Polythiols are di- up to hexafunctional low in viscosity solvent- and VOC-free nearly colorless liquids Polythiols have a high refractive index BRUNO BOCK THIOCHEMICALS 5 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Thiols react via polyaddition with Epoxies and Isocyanates and via radical respectively nucleophile addition with doubleand triple-bonds BRUNO BOCK THIOCHEMICALS 6 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Synthesis of Polythiols by esterification of Mercaptocarboxylic Acids + polyfunctional Alcohols 3-Mercaptopropionic Acid (3-MPA) Mercaptopropionates and Polymeric thiols Thioglykolic Acid (TGA) Mercaptoacetates BRUNO BOCK THIOCHEMICALS 7 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Mercaptopropionates 3-Mercaptopropionic Acid + Pentaerythritol THIOCURE® PETMP + Trimethylolpropane THIOCURE® TMPMP + Ethylenglycol BRUNO BOCK THIOCURE® GDMP THIOCHEMICALS 8 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Polymeric Polythiols THIOCURE® ETTMP THIOCURE® PCL4MP 1350 (Experimental product) THIOCURE® PPGMP 800 und 2200 (Experimental products) BRUNO BOCK THIOCHEMICALS 9 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne Mercaptoacetates Thioglycolic Acid (TGA) + Pentaerythritol THIOCURE® PETMA + Trimethylolpropane THIOCURE® TMPMA + Ethyleneglycol BRUNO BOCK THIOCURE® GDMA THIOCHEMICALS 10 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne THIOCURE® Characteristics Mercaptopropionates MercaptoAcetates Polymeric Polythiols PETMP, TMPMP, GDMP, 1 PETMA, TMPMA, GDMA ETTMP, PCL4MP 1350 Reactivity + ++ - Hardness + ++ - Flexibility -/+ -/+ ++ UV-Resistance ++ + -/+ Water miscibility -- -- -/+ ++ - + Odor ++ = best BRUNO BOCK THIOCHEMICALS 11 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne THIOCURE® Applications Binder for - Thiourethanesystems - Thiol-Ene-systems (thermal or UV-curing) BRUNO BOCK Additive for Hardener for - PU-systems - Epoxy-systems - Radiation curing UV-systems - Stoving systems THIOCHEMICALS 12 Contents Bruno Bock Evans Chemetics THIOCURE PU-Systems EP-Systems UV/ThiolEne THIOCURE® for Thiourethane-Systems The thiol group is the sulfur analog of the hydroxl group. Since sulfur and oxygen belong to the same periodic table group, they share some similiar chemical bonding properties. In comparison to the OH-bond the SH-bond is weaker, that means that the proton on the S-atom of thiols is given away more easily in comparison to the alcohols‘ proton higher reactivity than Acrylates, Polyesters, Polyethers BRUNO BOCK THIOCHEMICALS 13 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants Calculation of the hardener In general one equivalent of NCO-groups (42 g/mol) reacts with one equivalent of Thiol-groups (33 g/mol) Isocyanate [g] = Amount THIOCURE [g] x SH-content [%] x 42 33 x NCO-content [%] BRUNO BOCK THIOCHEMICALS 14 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants How could you influence the reactivity of Thiolurethane-systems? Add catalyst if the reactivity is too slow, for example metall catalysts like K-Kat® 5218 or quarternary ammonium salts (BYK® -ES 80) DBTL is not effective in catalyzing the SH/NCOreaction (at roomtemperature) Use THIOCURE® PETMP sl or PETMP cs instead of PETMP standard to slow down the reaction Add slow polyols or reaction inhibitors if the reactivity is too high BRUNO BOCK THIOCHEMICALS 15 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants Examples for reaction inhibitors are Phosphoric acid ester (Dibutyl phospate) or boric acid ester (Tributyl borate) Geltime PETMP + D'dur N 75 [min] 200 150 100 50 0 14 Control 1% Tributyl borate 0,1% Dibutyl phosphate Beware! Reactivity of comparable polyisocyanates could differ according to their producer BRUNO BOCK THIOCHEMICALS 16 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants Lower CO2-formation in comparison to the NCO-OH reaction 17-32 THIOCURE® ETTMP 700 + Desmodur® E 29 17-29 Polyetherpolyol + Desmodur® E 29 BRUNO BOCK THIOCHEMICALS 17 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants THIOCURE® for Epoxy-Systems as hardener or blend-hardener for solvent based and solvent free coating systems, castings, floorings, adhesives, sealants, plaster / mortar imparts rapid-cure / low-temperature-cure as hardener for epoxy-termininated polysulfides suitable less, respectively no color compared to amine hardeners BRUNO BOCK THIOCHEMICALS 18 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants Calculation of Hardener In general one equivalent of Epoxy-groups reacts with one equivalent of Thiol-groups (33 g/mol) THIOCURE [g] = Amount Epoxyresin [g] x 33 [g/mol] x 100 SH-content [%] x EEW [g/mol] or THIOCURE [g] = Epoxide Value x H-Equivalent of hardener EEW = Epoxy Equivalent Weight Epoxide Value = 100/EEW BRUNO BOCK THIOCHEMICALS 19 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants Use of an activator like tertiary amine is necessary The resulting thiolate anion is highly nucleophilic and quickly added to the epoxide Source: „Formulierung von Kleb- und Dichtstoffen“ (Bodo Müller / Walter Rath) BRUNO BOCK THIOCHEMICALS 20 THIOCURE Bruno Bock Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants With respect to type and concentration of amine very fast systems can be formulated Geltime] [min.] 350 331 300 250 200 150 100 50 21 0 0,10% 0,25% 8 0,50% 4 1,00% 100 g Bisphenol AStandard EP- Resin + 65.2 g PETMP Catalyst: TEDA Triethylenediamine (DABCO® LV 33 / Addocat® 105 , calculated on EP-resin) However, mixtures of tertiary amines and polythiols are not storage-stable BRUNO BOCK THIOCHEMICALS 21 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants Phosphonium Salts show also catalytic effect and can be premixed with THIOCURE [h] Geltime 12 10 8 100 g Bisphenol A-standard EP- resin + 65.2 g PETMP Catalyst: TributylhexadecylPhosphoniumbromide (Cyphos® 3472, calculated on EP-resin) 6 4 2 0 0,3 0,5 BRUNO BOCK 0,65 0,8 1 1,25 1,5 THIOCHEMICALS 22 Bruno Bock THIOCURE Evans Chemetics PU-Systems EP-Systems UV/ThiolEne Sealants THIOCURE® - Application Examples Floorings in parking garages and cold stores Concrete road repairs / repair mortars „5-minutes“ consumer adhesives Adhesives for electronic applications ©Pixelio BRUNO BOCK THIOCHEMICALS 23 THIOCURE PU-Systems Evans Chemetics EP-Systems UV/ThiolEne Sealants Types THIOCURE® for Radiation Curing Systems Ultraviolet Light / Electron Beam Free Radical Process Dual-Cure / Hybrid Cure BRUNO BOCK Cationic Process Thiol-EneReaction Anionic Catalyzed Polyaddition Process with photolatent Base MichaelAddition THIOCHEMICALS 24 THIOCURE PU-Systems Evans Chemetics EP-Systems UV/ThiolEne Sealants Types THIOCURE® for Thiol-Ene Systems The thiol-ene reaction is simply the coupling of thiol-groups with double bonds forming a thioether The thiol-ene reaction is a so called „click“ reaction and can take place as radical-mediated addition reaction or as base/ nucleophile-initiated Michael-addition Initiation occurs by radical initiators photochemically or thermically As combination partner can be used: acrylate, vinylether, propenylether, allylether, low molecular polybutadiene BRUNO BOCK THIOCHEMICALS 25 THIOCURE PU-Systems Evans Chemetics EP-Systems UV/ThiolEne Sealants Types Advantages: no oxygen inhibition!!! low volume shrinkage high conversion of the double bonds THIOCURE® - Application Examples Wood Impregnation BRUNO BOCK Doming-Labels THIOCHEMICALS 26 THIOCURE PU-Systems Evans Chemetics EP-Systems UV/ThiolEne Sealants Types THIOCURE® for Free Radical UV-Curing Systems Already 1 to 10 w/w% thiol as additive in acrylate-systems are sufficient to reduce oxygen inhibition, even in thin films The presence of thiol retards the gelpoint and reduces volume shrinkage Building of homogenous polymer networks Lower concentration of photoinitiator necessary Replacement of amine synergists in LED-curing systems BRUNO BOCK THIOCHEMICALS 27 THIOCURE PU-Systems Evans Chemetics EP-Systems UV/ThiolEne Sealants Types THIOCURE® for Sealants As modifier for sealants based on polysulfide to increase the crosslinking density BRUNO BOCK THIOCHEMICALS 28 THIOCURE PU-Systems THIOCURE® Chemical Description Evans Chemetics EP-Systems PETMP PETMP l.o. Molecular Weight [g/mol] PETMP sl „low odor“ Odorless version „slow“ Controlled reactivity, recommended for PU-Systems PETMP cs* Controlled reactivity, recommended for PU- and Thiol-EneSystems 488.6 125-128 SH-content [%w/w] ~ 26 Brookfield ISO 2555, 21°C Types 4 H-active-Equivalent Viscosity Sealants Pentaerythritoltetra(3-mercapto-propionate) Standardtype SH-functionality UV/ThiolEne ~ 400 mPa.s *Experimental Product BRUNO BOCK THIOCHEMICALS 29 THIOCURE PU-Systems Evans Chemetics EP-Systems UV/ThiolEne Sealants Types THIOCURE® TMPMP GDMP PETMA TMPMA GDMA Chemical Description Trimethylolpropanetri (3-mercaptopropionate) Glykoldi (3-mercaptopropionate) Pentaerythritoltetramercaptoacetate Trimethylolpropanetrimercaptoacetate Glykoldimercaptoacetate 3 2 4 3 2 398.6 238.3 432.5 356.5 210.2 H-activeEquivalent 136-140 122-125 111-114 122-125 107-108 SH-content [%w/w] ~ 24 ~ 26.8 ~ 29.5 ~ 26.5 ~ 30.5 ~10 mPa.s ~400 mPa.s Cristallize at RT ~120 mPa.s ~10 mPa.s SH-functionality Molecular Weight [g/mol] Viscosity Brookfield ISO 2555, 21°C ~150 mPa.s BRUNO BOCK THIOCHEMICALS 30 THIOCURE PU-Systems Evans Chemetics EP-Systems THIOCURE® UV/ThiolEne Sealants Types Di-PETMP Di-TMPMP* Di-Pentaerythritolhexakis (3-mercaptopropionate) Di-Trimethylolpropanetetra (3-mercaptopropionate) 6 4 783.0 602.8 H-active-Equivalent 135 – 139 154 – 158 SH-content [%w/w] ~ 24.1 ~ 20.8 ~ 2000 mPa.s ~ 450 mPa.s Chemical Description SH-functionality Molecular Weight [g/mol] Viscosity Brookfield ISO 2555, 21°C *Experimental Product BRUNO BOCK THIOCHEMICALS 31 THIOCURE PU-Systems THIOCURE® Chemical Description Evans Chemetics EP-Systems Einsatz UV/ThiolEne Sealants Types TEMPIC Tris[2-(3-mercaptopropionyloxy)ethyl]isocyanurate Formula SH-functionality Molecular Weight SH-content [%w/w] Viscosity Brookfield ISO 2555, 21°C BRUNO BOCK 3 525.6 g/mol 18 % ~8000 mPas THIOCHEMICALS 32 THIOCURE PU-Systems THIOCURE® Evans Chemetics EP-Systems UV/ThiolEne Sealants Types ETTMP 700 ETTMP 1300 Ethoxylated Trimethylpropan-tri(3mercapto-propionate) Ethoxylated Trimethylpropantri(3-mercapto-propionate) 3 3 4 ~700 ~1300 ~1350 H-active-Equivalent 236-262 435-448 348-375 SH-content [%w/w] ~ 13.5 ~ 7.1 ~ 9.1 ~200 mPa.s ~400 mPa.s ~1000 mPa.s Chemical Description SH-functionality Molecular Weight [g/mol] PCL4MP 1350* Polycaprolactone tetra 3-mercaptopropionate Viscosity Brookfield ISO 2555, 21°C *Experimental Product BRUNO BOCK THIOCHEMICALS 33 THIOCURE PU-Systems THIOCURE® Chemical Description Evans Chemetics EP-Systems UV/ThiolEne Sealants Types DMPT DMDS 2,3-Di((2-mercaptoethyl)thio)-1-propanethiol Dimercaptodiethylsulfide 3 2 260.5 154.3 min. 36.2 min. 40.7 < 10 mPa.s < 10 mPa.s 1.63 1.60 Formula SH-functionality Molecular Weight [g/mol] SH-content [%w/w] Viscosity Brookfield ISO 2555, 21°C Refractive Index Remark DMPT and DMDS are very smelly! Both may cause sensitization. Use only in closed applications! BRUNO BOCK THIOCHEMICALS 34 Einsatz © Bruno Bock BRUNO BOCK Chemische Fabrik GmbH & Co. KG Eichholzer Str. 23, D-21436 Marschacht, Tel. +49-4176-9098-0 Fax: +49-4176-1396, www.brunobock.de Contact Sales Jens P. Jensen Technical Service Center Elvira Schlatter Development Dr. Matthias Rehfeld +49-(0)4176-9098-13 +49-(0)4176-9098-27 +49-(0)4176-9098-21 [email protected] [email protected] [email protected] We advise our customers to the best of our knowledge and information available to us. No freedom from any patent owned by Seller or others is to be inferred. Because conditions of use and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Seller assumes no obligation or liability for the information in this document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED. BRUNO BOCK THIOCHEMICALS 08-2014
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