ANCAMIDE 702-B75 Curing Agent

Transcription

1 Epoxy Curing Agents and Modifiers ANCAMIDE 702-B75 Curing Agent DESCRIPTION Ancamide 702-B75 curing agent is a member of a new series of reactive polyamides developed for use in te curing of epoxy resins in solvent-based surface coatings applications. Ancamide 702-B75 curing agent is an epoxy adduct of te low viscosity polyamide curing agent, Ancamide 351A, supplied as a 75% solids by weigt solution in n-butanol. Special features of tis pre-adducted polyamide include; good epoxy resin compatibility witout induction; excellent adesion and cure under adverse conditions. TYPICAL PROPERTIES Appearance Clear amber liquid Colour 1 (Gardner) 8 max Viscosity 25 C [mpa.s] 4,000-8,000 Amine Value 3 [mg KOH/g] 245±15 Specific 21 C 0.96 Equivalent Weigt {AHEW} 170 Recommended use Level 4 [PHR] 90 Solids Content, [%] 75±1 ADVANTAGES Good corrosion resistance Fast touc dry Good colour and ligt stability Good adesion APPLICATIONS Hig solid marine and protective coatings Primers, sealers and coatings for concrete SHELF LIFE At least 24 monts from te date of manufacture in te original sealed container at ambient temperature. Store away from excessive eat and umidity in tigtly closed containers. STORAGE AND HANDLING Refer to te Safety Data Seet for Ancamide 702-B75 curing agent. TYPICAL HANDLING PROPERTIES Primer formulations 32.5% PVC Liquid Epoxy Resin (80pr, 90% stoiciometric loading) Set to touc (finger) [] 1.5 Hard dry tumb twist [] 3.5 Pot Life 5 [] 3 Perzoz Hardness 240 Direct impact [cm.kg] 80 Reverse impact [cm.kg] 4 TYPICAL PERFORMANCE PROPERTIES Primer formulations 34% PVC. Semi Solid Epoxy Resin (EEW 375, 40pr, 90% stoiciometric loading) Set to touc (finger) [] 1.0 Hard dry tumb twist [] 3.0 Pot Life 5 [] 5 Perzoz Hardness 220 Direct impact [cm.kg] 200 Reverse impact [cm.kg] 12 Footnotes: (1) ASTM D (2) Brookfield RVTD, Spindle 4 (3) Percloric Acid Titration (4) Teoretical value wit Bispenol A diglycidyl eter (EEW=190) (5) Paint formulation, time to double in viscosity Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

2 SUPPLEMENTARY DATA Ancamide 702-B75 curing agent is low viscosity, solvent based polyamide adduct, supplied at 75% solids in n-butanol. Te product is intended for use wit a variety of epoxy resin types in te development of ig performance, corrosion resistant coatings for te protection of steel and concrete. Wen used wit a semi solid epoxy resin (EEW ), Ancamide 702- B75 curing agent offers fast lacquer dry, rapid mecanical property development, good adesion to te steel substrate and excellent long-term umidity and corrosion resistance. In addition, Ancamide 702-B75 curing agent exibits excellent compatibility wit liquid epoxy resins and terefore ig solid, solvent based coatings can be formulated using tis product, wic can ten be used for a wide variety of industrial maintenance and marine applications. Ancamide 702-B75 curing agent as a teoretical loading wit standard bispenol A diglycidyl eter resin of 90 pr, owever, for optimum performance it is recommended tat te Ancamide 702-B75 curing agent is used at or below stoiciometry. Were good corrosion and umidity resistance are required, it is recommended to use less tan te stoiciometric ratio and to use te curing agent in te pr range, wit an epoxy resin EEW of 190. Ancamide 702-B75 curing agent, like oter polyamide curing agents, is igly soluble in polar solvents suc as n-butanol, glycol eters and ketones. Ancamide 702-B75 curing agent does, owever, exibit lower solubility in aromatic solvents, suc as Xylene, terefore it is important wen developing coating formulations to maintain a suitable balance of polar and non-polar solvents. Tis is particularly important because as pot life progresses and molecular weigt increases, stronger solvents may be needed to maintain good solubility of te polyamide-epoxy resin polymer. Te addition of benzyl alcool or propylene glycol penyl eter (PP) can also be beneficial, in tat tese materials will improve te initial compatibility of Ancamide 702-B75 curing agent wit epoxy resin, minimizing any induction time. Formulations based on Ancamide 702-B75 curing agent can also be accelerated to enance dry speed bot at ambient at low temperature, using Ancamine K54 (penolic, tertiary amine accelerator). Levels can be varied to acieve te desired dry speed properties, wit te preferred level in te % range based on Ancamide 702-B75 curing agent loading. STARTING POINT FORMULATIONS Appendix 1 contains preliminary starting point formulations based on Ancamide 702-B75 curing agent for a series of anticorrosive primers and top coats. Wen pigmented, Ancamide 702-B75 coatings exibit a fast lacquer dry, as measured using te finger dry to touc metod, were coatings are dry to touc in less tan 2. Using te Beck Koller metod, dryard times range from 2-3 rs depending upon te system tested, wen applied and cured at 23 C. As wit all solvent based coatings, dry times are influenced by solvent coice, so dry times may vary depending upon te ratio of polar and nonpolar solvents incorporated into te coating formulation. Pot life as measured by te time for te mix to double in viscosity corresponds to 3rs for a formulated coating based on liquid epoxy resin and 5rs for a coating formulated wit a semi-solid epoxy resin, tese are typical for tis type of polyamide system. Formulation A702-B75P1 is a medium volume solids (62%), anti-corrosive primer, based on liquid bispenol A diglycidyl eter (EEW 190). Te formulation as a 2:1 mix ratio by volume, based on epoxy resin to amine ardener. Te initial viscosity of te formulated resin base is 3,000mPa.s and te mix viscosity of te system is 1000mPa.s wit a total VOC of 320g/l. Te primer formulation is compatible wit a variety of different let down solvents (including xylene, n-butanol, MIBK, metoxy-propanol, etc) and can be furter let down if required for additional spray applications. Te coating formulation can be applied wit conventional spray equipment or brus applied to te steel substrate and as a pot life of 3. After application te primer is tack free after 2 and dry to andle (tumb twist) after 5, following cure at 23 C. Formulation A702-B75P2 is a medium volume solids (55%), anticorrosive primer, based on a semi-solid, bispenol A diglycidyl eter mixture (EEW 375). Te formulation as a 3:1 mix ratio by volume, and a VOC of 380g/l. Te coating formulation can be applied wit conventional spray equipment or brus applied to te steel substrate and as a pot life of 4. After application te primer is tack free after 1 and dry to andle after 3, following cure at 23 C. Formulation A702-B75P3 is a low volume solids (48%), anticorrosive primer, based on a modified solid bispenol A diglycidyl eter (EEW 525). Te formulation as a 4:1 mix ratio by volume, and a VOC of 485g/l. Te coating formulation can be applied wit conventional spray equipment or brus applied to te steel substrate and as a pot life of 6. After application te primer is tack free after 1 and dry to andle after 3 following cure at 23 C. Formulation A702-B75W1 is a medium volume solids (57%), medium PVC (29%) wite top coat based on a modified solid epoxy resin (EEW 525). Tis formulation demonstrates te utility of te Ancamide 702-B75 curing agent for use as eiter a tie coat or a top coat for primer systems. Te above formulations ave as been evaluated for corrosion resistance properties using salt spray, umidity and proesion resistance accelerated weater tests. After 1000 exposure, coatings exibit excellent corrosion resistance. Te primer system based on te solid epoxy resin was also tested after overcoating wit te wite topcoat. Te two coat system exibited >1000 salt spray and salt water immersion Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

3 resistance. For comparative purposes, Ancamide 700-B75 curing agent was also included in te test study as te industry standard reference. In all te corrosion resistance tests carried out, bot Ancamide 702-B75 and Ancamide 700- B75 curing agents demonstrated comparable performance. PERFORMANCE EVALUATION All coatings were evaluated in 5% salt spray, and in continuous umidity at 35 C. Tey were also evaluated using a proesion - cyclic weatering tester, and Cleveland constant umidity exposure, following a 10 day ambient cure of applied coatings. In addition te two coat system (A702-B75P3 overcoated wit A702-B75W1) was assessed for 1000 corrosion resistance following immersion in a 3.5% NaCl salt solution Primer coatings were applied to grit blasted, ot rolled steel (SA2.5), using conventional spray equipment, in double coats to give coatings wit a µ dry film tickness (DFT). Were multi-coat systems were tested, te primer was over coated wit a wite enamel via spray application in order to acieve a total dry film tickness of approximately 200µ. In salt spray, (ASTM B-117) panels were scribed and evaluated for field blisters using te US Federal Standard Test Metod 141a, Metod 6461 and te scribe creep was rated in accordance wit ASTM D Similar evaluations were made for panels placed in te proesion cabinet (ASTM G85-94). Panels exposed to umidity and salt solution immersion, were also scribed and coatings were also assessed for scribe damage, blistering and for canges in visual appearance. CORROSION RESISTANCE Anti-corrosion resistant primers based on Ancamide 702-B75 and Ancamide 700-B75 curing agents, were evaluated for salt spray, salt water immersion and constant umidity resistance. Te results obtained are presented in Table 2-4. TABLE 2: SALT SPRAY RESISTANCE ANCAMIDE 702-B75 AND ANCAMIDE 700-B75 Formulation Scribe Creep Field Blistering A702-B75P F A700-B75P F A702-B75P F A700-B75P F A702-B75P F A700-B75P F A702-B75 (P3/W1) A700-B75 (P3/W1) % salt spray, cabinet temperature 35oC - ASTM B-117, film tickness µ; Rating: ASTM D714: 10 = Best (no blisters), 0 = Worst, F= few TABLE 3: SALT WATER IMMERSION ANCAMIDE 702-B75 AND ANCAMIDE 700-B75 Formulation Scribe Creep 3.5% NaCl solution at 23 C Film tickness µ. Rating: 10 = Best, 0 = Worst For blister size, rating 10= no blisters observed: F= Few blisters TABLE 4: CLEVELAND HUMIDITY ANCAMIDE 702-B75 AND ANCAMIDE 700-B75 Continuous 100% umidity exposure ASTM D-2247, cabinet temperature 50 C Film tickness µ. Rating: 10 = Best, 0 = Worst For blister size, rating 10 = no blisters observed PERFORMANCE RESULTS Field Blistering Appearance A702-B75P1 10 6F Sligt blancing A700-B75P1 10 6F Blancing A702-B75P3 10 4F Sligt blancing A700-B75P3 10 4F Sligt blancing A702-B75 (P3/W1) Sligt rusting A700-B75 (P3/W1) Sligt rusting Formulation Scribe Creep Field Blistering Appearance A702-B75P No defects A700-B75P No defects A702-B75P No defects A700-B75P No defects Ancamide 702-B75 curing agent can readily be formulated into a wide range of anti-corrosive primers and top coats depending upon te epoxy resin system required. General andling properties of te formulated coatings are comparable to Ancamide 700-B75 curing agent and coatings can easily be applied using a range of application metods suc as brus, roller and spray application. In accelerated weater testing, corrosion resistance indicates tat Ancamide 702-B75 curing agent delivers te ig level of corrosion resistance typically observed for tis class of polyamide adduct. Resistance up to 1000 resistance was easily acieved for all systems tested wit no noticeable damage around te scribe during tis period. Primer panels after 1500 exposure did demonstrate some minor scribe damage and panels also began to sow te early development of field blistering, owever, te results obtained wit Ancamide 702- B75 curing agent were comparable to tose obtained wit te standard reference, Ancamide 700-B75 curing agent. Te test data sows tat multi-coat systems, based on te Ancamide 702-B75 curing agent, also deliver excellent protection. Primer panels over coated wit a wite Titanium dioxide based enamel, sowed no signs of damage following 1000 accelerated salt spray exposure. In addition exposure to bot Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

4 constant umidity ad immersion in a NaCl (3.5%) salt solution indicates tat te curing agent can be formulated into barrier coatings offering a ig level of protection, tus making Ancamide 702-B75 curing agent an excellent coice in te area of metal protection. CORROSION RESISTANCE FOLLOWING 1000H ACCELERATED SALT SPRAY EXPOSURE Anti-corrosive Primer A700-B75P1 and A702-B75P1 Coatings applied using conventional spray equipment. 2 coatings applied to acieve total dry film tickness µ Anti-Corrosive Primer A700-B75P3 and A702-B75P3 over coated wit Wite Top Coats A700-B75W1 and A702-B75W Coatings applied using conventional spray equipment. 2 primer coatings applied to acieve total dry film tickness µ, followed by top coat to give a total dry film tickness ~200µ CORROSION RESISTANCE FOLLOWING 1000HRS IMMERSION IN 3.5% NACL SOLUTION Anti-Corrosive Primer and Top Coat based on A700-B75P3 and A702-B75P3 Top Coated wit A700-B75W1 and A702-B75W1 Coatings applied using conventional spray equipment. 2 primer coatings applied to acieve total dry film tickness µ, followed by top coat to give a total dry film tickness ~200µ Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

5 APPENDIX I PRIMER FORMULATIONS ANCAMIDE 702-B75P1 ANTI-CORROSIVE PRIMER BASED ON LIQUID EPOXY RESIN EEW 190. CURING AGENT LOADING 90% OF THEORETICAL STOICHIOMETRY Anti-Corrosive Primer A-Component (g) 1. Epoxy Resin Bis A diglycidyl eter (EEW190) Settling agent Antiterra U Tixotrope Bentone SD Solvent Xylene n butanol Filler Blanc fix micro Filler Microtalc mica W Filler Heucopos ZP10 Heubac Filler Bayferrox 130M Bayer Filler Wollastocoat 10ES , A-Component Manufacture Procedure: Carge components 1-4 and stir omogeneous at low sear Slowly add components 5-9 and ten mix under ig sear for 30 mins until Hegman gauge 7 is acieved B-Component (g) 1. Curing Agent Ancamide 221-X70 Evonik Curing Agent Ancamine K54 Evonik Solvent Xylene Solvent Dowanol PM Total 1, After mixing Part A and B, apply a minute induction time prior to application. TECHNICAL DATA Mixing ratio Density (g/ml) (weigt %) (Volume %) Weigt Volume 3.5 :1 2.0 : Mix Viscosity 25 C mpa.s 1000 VOC PVC g/l % Pot-life 3 Gloss (60 ) 45 BK Dry time 23 C Pase I Pase II Hard Dry Tumb Twist 3.50 Persoz Hardness 7 days 240 Direct impact Reverse impact cm.kg cm.kg 80 4 Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

6 ANCAMIDE 702-B75P2 ANTI-CORROSIVE PRIMER BASED ON SEMI-SOLID EPOXY RESIN EEW 375. CURING AGENT LOADING 90% OF THEORETICAL STOICHIOMETRY Anti-Corrosive Primer A-Component (g) 1. Epoxy Resin Solvent BADGE (EEW 670) 75% wt Epoxy Resin Liquid BADGE (EEW 190) in xylene Settling agent Antiterra U Solvent Xylene n butanol MIBK Filler Blanc fix micro Filler Microtalc mica W Filler Heucopos ZP10 Heubac Filler Bayferrox 130M Bayer Filler Talc 10m , A-Component Manufacture Procedure: Carge components 1-4 and stir omogeneous at low sear Slowly add components 5-9 and ten mix under ig sear for 30 mins until Hegman gauge 7 is acieved B-Component (g) 1. Curing Agent Ancamide 221-X70 Evonik Curing Agent Ancamine K54 Evonik Solvent n butanol Solvent Xylene Total 1, After mixing Part A and B, apply a 30 minute induction time prior to application. TECHNICAL DATA Mixing ratio Density (g/ml) (weigt %) (Volume %) Weigt Volume 5.0 :1 3.0 : Mix Viscosity 25 C mpa.s nd VOC PVC g/l % Pot-life 35 Gloss (60 ) 46 BK Dry time 23 C Pase I Pase II Hard Dry Tumb Twist 3.00 Persoz Hardness 7 days 220 Direct impact Reverse impact cm.kg cm.kg Examples of solvent based, solid BADGE: Examples of liquid based BADGE: Dow DER 671-X75 or Epon 1001-X75 types Nanya NPEL 128, Dow DER 331 or Epon 828 types Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

7 ANCAMIDE 702-B75P3 ANTI-CORROSIVE PRIMER BASED ON SOLID EPOXY RESIN EEW 525. CURING AGENT LOADING 90% OF THEORETICAL STOICHIOMETRY Anti-Corrosive Primer A-Component (g) 1. Epoxy Resin Solvent BADGE (EEW 670) 75% wt in xylene Epoxy Resin Liquid BADGE (EEW 190) Diluent Epodil LV Tixotrope Bentone SD Dispersant Disperbyk Solvent Xylene Dowanol PM MIBK Filler Barite Filler Quartz 400 mes Filler Heucopos ZPA Heubac Filler Bayferrox 130M Bayer Filler Talc 400 mes A-Component Manufacture Procedure: Carge components 1-4 and stir omogeneous at low sear Slowly add components 5-9 and ten mix under ig sear for 30 mins until Hegman gauge 7 is acieved B-Component (g) 1, Curing Agent Ancamide 221-X70 Evonik Curing Agent Ancamine K54 Evonik Solvent n butanol Solvent Xylene Total 1, After mixing Part A and B, apply a 30 minute induction time prior to application. TECHNICAL DATA Mixing ratio Density (g/ml) (weigt %) (Volume %) Weigt Volume 5.0 :1 3.0 : Mix Viscosity 25 C mpa.s nd VOC PVC g/l % Pot-life 5 Gloss (60 ) 58 BK Dry time 23 C Pase I Pase II Cross Hatc Ad (no loss) Persoz Hardness 7 days nd Direct impact cm.kg 200 Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

8 ANCAMIDE 702-B75W1 WHITE TOP COAT BASED ON SOLID EPOXY RESIN EEW 525. CURING AGENT LOADING 95% OF THEORETICAL STOICHIOMETRY Anti-Corrosive Primer A-Component (g) 1. Epoxy Resin Solvent BADGE (EEW 670) 75% wt in xylene Epoxy Resin Liquid BADGE (EEW 190) Additive Cymel Reology aid MPA 2000X Tixotrope Bentone SD Flow agent Modaflow Additive Antiterra U Pigment Titanium Dioxide Filler Barite Filler Quartz 400 mes Solvent Xylene Solvent n butanol A-Component Manufacture Procedure: Carge components 1-7 and stir omogeneous at low sear Carge appropriates amounts of 11 and 12 to aid dispersion Slowly add components 8-10 and ten mix under ig sear for 30 mins until Hegman gauge 7 is acieved Add remaining 11 and 12 after grind B-Component (g) 1, Curing Agent Ancamide 221-X70 Evonik Curing Agent Ancamine K54 Evonik Solvent n butanol Solvent Xylene Total 1, After mixing Part A and B, apply a minute induction time prior to application. TECHNICAL DATA Mixing ratio Density (g/ml) (weigt %) (Volume %) Weigt Volume 5.4 :1 3.0 : Mix Viscosity 25 C mpa.s nd VOC PVC g/l % Pot-life 5 Gloss (60 ) 82 BK Dry time 23 C Pase I Pase II Cross Hatc Ad (no loss) Persoz Hardness 7 days nd Direct impact cm.kg 180 Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May /9

9 Epoxy Curing Agents and Modifiers ANCAMIDE 702-B75 Curing Agent EVONIK RESOURCE EFFICIENCY GMBH Business Line Crosslinkers Paul-Baumann-Straße Marl Germany apcsepx@evonik.com Tis information and any recommendations, tecnical or oterwise, are presented in good fait and believed to be correct as of te date prepared. Recipients of tis information and recommendations must make teir own determination as to its suitability for teir purposes. In no event sall Evonik assume liability for damages or losses of any kind or nature tat result from te use of or reliance upon tis information and recommendations. EVONIK EXPRESSLY DISCLAIMS ANY REPRESENTATIONS AND WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, AS TO THE ACCURACY, COMPLETENESS, NON-INFRINGEMENT, MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE (EVEN IF EVONIK IS AWARE OF SUCH PURPOSE) WITH RESPECT TO ANY INFORMATION AND RECOMMENDATIONS PROVIDED. Reference to any trade names used by oter companies is neiter a recommendation nor an endorsement of te corresponding product, and does not imply tat similar products could not be used. Evonik reserves te rigt to make any canges to te information and/or recommendations at any time, witout prior or subsequent notice. Evonik Corporation, 2018 ANCAMIDE 702-B75 CURING AGENT European Version I May / EU