Carboset CR-717 Acrylic Copolymer Emulsion TECHNICAL DATA SHEET

Transcription

1 Acrylic Copolymer Emulsion TECHNICAL DATA SHEET General Description Carboset CR-717 resin is a non-yellowing, water white hydroxy-functional acrylic copolymer emulsion designed to be crosslinked for optimal performance in lacquer topcoats and sealers on wood. Coatings produced with Carboset CR-717 resin demonstrate exceptional hardness, clarity, appearance and chemical/stain resistance. Carboset CR-717 resin can also be catalyzed for faster development of hardness and print resistance. The hydroxy-functionality of Carboset CR-717 resin is ideal for crosslinking to provide performance properties exceeding that of traditional nitrocellulose lacquers. A suitable crosslinking agent is Bayhydur XP-7063 (Bayer Corporation). Bayhydur XP-7063 is a water dispersible aliphatic polyisocyanate which crosslinks with the hydroxy-functionality of the Carboset CR-717 resin. The resultant coating has good pot life, excellent application characteristics (low microfoam), rapid cure and outstanding cured-coating performance. Other crosslinkers may also be used with Carboset CR-717 resin. Suggested Applications Factory applied wood lacquers Institutional furniture finishes Kitchen cabinet finishes-passes KCMA Office product finishes Sanding sealers High-gloss or satin finishes Performance Features Water white, non yellowing KCMA performance Low microfoam, excellent clarity Excellent hardness Excellent water resistance Excellent chemical and stain resistance Typical Physical Properties* Appearance White Translucent Emulsion Total Solids by Weight, % 38.0 Total Solids by Volume, % 36.4 Density, pounds per gallon 8.7 Density, Specific Gravity 1.04 ph MFFT 26 C Brookfield Viscosity-RVT C, #3 Spindle, cps Acid Number 24 Hydroxyl Number 52 Equivalent Wt Freeze/Thaw Stability Protect from Freezing *Property values represent typical results only and are not to be considered specifications. June 4, 2007 The information contained herein is believed to be reliable, but no representations, guarantees or warranties of any kind are made as to its accuracy, suitability for particular applications or the results to be obtained. The information is based on laboratory work with small-scale equipment and does not necessarily indicate end product performance. Because of the variations in methods, conditions and equipment used commercially in processing these materials, no warranties or guarantees are made as to the suitability of the products for the applications disclosed. Full-scale testing and end product performance are the responsibility of the user. Lubrizol Advanced Materials, Inc. shall not be liable for and the customer assumes all risk and liability of any use or handling of any material beyond Lubrizol Advanced Materials, Inc.'s direct control. The SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Nothing contained herein is to be considered as permission, recommendation, nor as an inducement to practice any patented invention without permission of the patent owner. Lubrizol Advanced Materials, Inc Brecksville Road Cleveland, OH The Lubrizol Corporation

2 Page 2 Typical Performance Data CURE RESPONSE DEVELOPMENT OF MEK RESISTANCE Model Formula CR B (1.5 WFT over Aluminum Panel) MEK DOUBLE RUBS (1) 1 Hour 2 Hours 3 Hours 4 Hours 6 Hours 8 Hours 16 Hours 24 Hours Room Temperature Bake F Bake F Notes: (1) Heavy pressure with finger wrapped in gauze, soaked in MEK. (2) Ultimate MEK resistance at 2-3 week cure is MEK double rubs, regardless of initial bake temperature. (3) Uncrosslinked formulation (not shown) shows less than 10 MEK double rubs. HARDNESS DEVELOPMENT WITH VARIOUS CROSSLINKERS Formulation Model Formula CR B Crosslinker 0.9/1.0 NCO/OH Ratio Konig Hardness -- seconds (4) 20 min. Cool Down (1) After 3 Weeks Cured 10 min. Cured F Cured F 48 (25) 67(64) 118(107) 125(120) 1.0/ / / Model Formula XAMA 6 phr 66(69) 95(100) 110(114) 111(124) CR B (3) XAMA 6 phr 65(75) 83(89) 98(120) 110(122) Notes: (1) Numbers in parentheses are values obtained when original 2-K coating mixes were re-inoculated with additional crosslinker after 8 hours. For Bayhydur, lower Konig values at 20 minute interval likely due to some plasticization with additional Bayhydur. (2) Bayhydur XP-7063 (3) XAMA-2 or XAMA-7 replaces Bayhydur as the crosslinker. NOTE: Xama -2 has been discontinued by the manufacturer. (4) Konig hardness reproducibility is approximately ± F Print Resistance Results CARBOSET CR-717 Resin Model Formula Model Formula Model Formula CR B CR CR D Catalyzed (Non-HAPS) Immediate (10 min. cool) hours days Test Rating: 0 = No effect; 6 = Worst effect Coatings were sprayed on white oak; 2 coats (self-primed); total dft=1.5 mil; Each coat baked F. Print Test: 4 Pound Weight, F.

3 Page 3 Typical Performance Data CARBOSET CR-717 Resin KCMA Test Results Model Formula Model Formula CR D CR B (Catalyzed) Stain Tests (24 hr.) Vinegar Pass Pass Lemon Juice Pass Pass Orange Juice Pass Pass Grape Juice Pass Pass Ketchup Pass Pass Coffee Pass Pass Olive Oil Pass Pass 100 Proof Alcohol Pass Pass Mustard (1 hr) Stain, fades to pass Stain, fades to pass 409 Cleaner Pass Pass Detergent and Water Resistance Pass: No Delamination No Swelling No Blistering No Whitening Pass: No Delamination No Swelling No Blistering No Whitening Coatings were sprayed on white oak; 2 coats (self-primed); total dft = 1.5 mil; panels allowed to dry 14 Days. Office Furniture Test Results Carboset CR-717 Resin System Model Formula Competitive Test Reagent Model Formula CR B 2-K W/B Commercial Commercial W/B CR D Catalyzed Acrylic Emulsion S/B NC Lacquer Acid Catalyzed Tap Water Coffee % Dawn Detergent Old English Red Oil Mineral Spirits % Ethanol Black Felt Papermate Marker Acetone Nail Polish Remover (Cutex) Amyl Acetate Coty 24 Lipstick Mustard Tomato Juice Grape Juice Coca-Cola Papermate Blue Ball Pen Liquid Correction Fluid Total Sum Coatings were sprayed on white oak; 2 coats (self-primed); total dft = 1.5 mil; panels allowed to dry 14 days. Reagents placed on coated panel, covered with watch gloss for 16 hours. Individual test ratings: 0 = No effect; 6 = Worst effect.

4 Page 4 Typical Performance Data GLOSS CLEAR WOOD LACQUER Model Formula CR D Material Pounds Gallons Use Component #1: This is a 2-K system, with Components #1 & #2 to be mixed just prior to use. Add to clean tank. Add all ingredients with agitation. Carboset CR-717 resin OH-Functional Acrylic Emulsion Water Adjust ph to 8.0 with DMEA or ammonia Premix next four items before adding. Add slowly with agitation. Glycol Ether EB Cosolvent Surfynol 104H Flow Additive Water Surfynol DF Defoamer K System: Mixing of Component #1 with Bayhydur XP-7063 (Recommended Ratio: 100 parts polymer to 20 parts Bayhydur) (NCO:OH ratio is 0.87:1.0) Component # Add water, mix Water (to maintain 30% T.S.) Add Bayhydur with moderate agitation, mix for 1-2 minutes. Bayhydur XP Crosslinker PHYSICAL PROPERTIES OF COMPONENT #1 PHYSICAL PROPERTIES OF 2K MIXTURE Total Solids by Weight, % 30.0 Total Solids by Weight, % 30.0 Total Solids by Volume, % 28.9 Total Solids by Volume, % 28.5 Density, lb./gal Density, lb./gal VOC pounds/gallon 0.64 VOC pounds/gallon 0.73 gm/liter 76 gm/liter 88 Viscosity -#2 Zahn, sec ph ph Ford #4 Cup Viscosity - seconds Gel Time 32 hrs. Gloss 20 /60 81/88 DOI 97 MFT - C 5

5 Page 5 Formulation GLOSS CLEAR WOOD LACQUER -- CATALYZED Model Formula CR B Material Pounds Gallons Use Component #1: This is a 2-K system, with Components #1 & #2 to be mixed just prior to use. Add to clean tank. Add all ingredients with agitation. Carboset CR-717 resin OH-Functional Acrylic Emulsion Water Adjust ph to 8.0 with DMEA or ammonia. Premix next four items before adding. Add slowly with agitation. Glycol Ether EB Cosolvent Surfynol 104H Flow Additive Water Surfynol DF Defoamer Add with good agitation. Metacure T Catalyst* (*Note on Catalyst: Level of catalyst can be varied to achieve faster or slower cure, depending on application and drying requirements.) 2-K System: Mixing of Component #1 with Bayhydur XP-7063 (Recommended Ratio: 100 parts polymer to 20 parts Bayhydur) (NCO:OH ratio is 0.87:1.0) Component # Add water, mix Water (to maintain 30% T.S.) Add Bayhydur with moderate agitation, mix for 1-2 minutes. Bayhydur XP Crosslinker PHYSICAL PROPERTIES OF COMPONENT #1 PHYSICAL PROPERTIES OF 2K MIXTURE Total Solids by Weight, % 30.0 Total Solids by Weight, % 30.0 Total Solids by Volume, % 28.9 Total Solids by Volume, % 28.5 Density, lb./gal Density, lb./gal VOC pounds/gallon 0.64 VOC pounds/gallon 0.73 gm/liter 76 gm/liter 88 Viscosity -#2 Zahn, sec ph ph Ford #4 Cup Viscosity - seconds Gel Time 32 hrs. Gloss 20 /60 81/88 DOI 97 MFT - C 5

6 Page 6 Formulation GLOSS CLEAR WOOD LACQUER LOW VOC/NON-HAPS Model Formula CR Material Pounds Gallons Use Component #1: This is a 2-K system, with Components #1 & #2 to be mixed just prior to use. Add to clean tank. Add all ingredients with agitation. Carboset CR-717 resin OH-Functional Acrylic Emulsion Water Adjust ph to 8.0 with DMEA or ammonia. Premix next five items before adding. Add slowly with agitation. Glycol Ether TPnB Cosolvent Surfynol 104H Flow Additive Water Byk Slip Aid Surfynol DF Defoamer Add with good agitation. Metacure T Catalyst* K System: Mixing of Component #1 with Bayhydur XP-7063 (Recommended Ratio: 100 parts polymer to 20 parts Bayhydur) (NCO:OH ratio is 0.87:1.0) Component # Add water, mix Water (to provide 30% T.S.) Add Bayhydur with moderate agitation, mix for 1-2 minutes. Bayhydur XP Crosslinker PHYSICAL PROPERTIES OF COMPONENT #1 PHYSICAL PROPERTIES OF 2K MIXTURE Total Solids by Weight, % Total Solids by Weight, % 30.0 Total Solids by Volume, % Total Solids by Volume, % Density, lb./gal Density, lb./gal VOC pounds/gallon 0.34 VOC pounds/gallon 0.29 gm/liter 41 gm/liter 35 Viscosity -#2 Zahn, sec ph ph Ford #4Cup Viscosity - seconds Gel Time 32 hrs. Gloss 20 /60 81/88 DOI 97 MFT - C 5

7 Page 7 Formulation WHITE HIGH GLOSS BAKING ENAMEL Model Formula CR Material Pounds Gallons Use This is a 2-K system, with Components #1 & #2 to be mixed just prior to use. Component #1: Add to clean tank. Add all ingredients with agitation. Carboset CR-717 resin OH-Functional Acrylic Emulsion Water Adjust ph to 8.0 with DMEA or ammonia. Premix next four items before adding. Add slowly with agitation. Glycol Ether EB Cosolvent Surfynol 104H Flow Additive Water Surfynol DF Defoamer High speed disperse the following four ingredients to a Hegman of 7.0 Water Byk Dispersant Surfynol DF Defoamer Kronos Pigment Add with good agitation 10% Ammonium Benzoate Flash Rust Inhibitor Adjust viscosity to 30 secs using Zahn #2 Rheolate Rheology Modifier Add with good agitation Metacure T Catalyst* K System: Mixing of Component #1 with Bayhydur XP-7063 (Recommended Ratio: 100 parts polymer to 20 parts Bayhydur) (NCO:OH ratio is 0.87:1.0) Component # Add water, mix Water (to maintain 35% T.S.) Add Bayhydur with moderate agitation, mix for 1-2 minutes. Bayhydur XP Crosslinker PHYSICAL PROPERTIES OF COMPONENT #1 PHYSICAL PROPERTIES OF 2K MIXTURE Total Solids by Weight, % 39.3 Total Solids by Weight, % 35.0 Total Solids by Volume, % 30.2 Total Solids by Volume, % 26.3 Density, lb./gal Density, lb./gal VOC pounds/gallon 0.75 VOC pounds/gallon 0.65 gm/liter 89 gm/liter 78 Viscosity -#2 Zahn, sec ph ph Ford #4 Cup Viscosity - seconds Gel Time 32 hrs. Gloss 20 /60 50/80 MFT - C 5

8 Page 8 Formulation Suggestions and Raw Material Information CURE RATE In most 2-K coating systems, reaction between components A and B takes hours or days to complete. While much of crosslinker is reacted within the first 4-8 hours after the coating has dried, cure can actually continue to progress over the next few days. Resistance properties and hardness are two typical measures of cure. As shown in data on page 2, Konig hardness and MEK resistance continue to increase over a one-week period at room temperature, with most of the cure completed by 24 hours. CURE RATE USE OF CATALYST Accelerated cure rates can be obtained through the use of small amounts of catalyst. Formulations CR D and 02B are essentially the same, except for a small addition of Metacure T-12 catalyst. The speed of cure can be observed through the rate at which print resistance develops. See page 2 for the data which shows the catalyzed formula develops print resistance more quickly than the uncatalyzed formula. Metacure T-12 CROSSLINKERS Air Products Evaluation thus far has included water dispersible isocyanate and polyfunctional aziridine crosslinkers (Bayhydur XP-7063 and XAMA -7). Cure response and performance properties are generally quite similar in testing to date. There may be a slight advantage in early hardness development for systems which are crosslinked with XAMA-7, but this is likely due to modest plasticizing effects when Bayhydur XP-7063 is used. (Bayhydur plasticizes the acrylic emulsion somewhat, leading to a slightly softer coating immediately after application. As the isocyanate crosslinks with the OH functionality in the acrylic, full hardness is obtained.) As with most crosslinkers, the amount used should be carefully evaluated by the formulator to optimize coating properties. Our model formulation shows a slightly less than stoichiometric level of Bayhydur XP-7063 (NCO:OH level 0.87:1.0). Some of the OH functionality resides inside the acrylic emulsion miscelles, and, therefore, is unavailable for crosslinking reactions. Other crosslinkers may be more or less likely to react, depending on diffusion rates into the acrylic miscelles, and overall reaction rates. Evaluations of crosslinker levels should include levels slightly above, at, and below stoichiometric balance. (See data on page 2.) POT LIFE In some 2-K coating systems, the end of useable pot life may be observed by a viscosity drop, viscosity increase, or even gelation. However, in the formulations for Carboset CR-717 resin included in this TDS, end of pot life is not easily observed. No viscosity drop or increase is typically seen. Based on extensive evaluation of coating performance properties, such as hardness, print resistance, chemical resistance, and MEK resistance, pot life can be considered to be approximately 4-6 hours, at which point some marginal drop-off in resistance properties can be observed. This was noted for crosslinkers Bayhydur XP-7063 and XAMA-7. Re-inoculation to restore cure response, can be done at the 4 or 6 hour point or the next day. When re-inoculating, use the same amount of crosslinker as originally used, and add under constant agitation. (Early print resistance will suffer slightly, but full hardness and print properties should be observed in 1-3 days.) All three crosslinkers noted above were used in the re-inoculation study. (Data on pg. 2) COALESCENT SOLVENTS Carboset CR-717 resin responds very well to a variety of ethylene and propylene based glycol ethers and blends. This offers the formulator wide latitude of options when coalescing Carboset CR-717 resin to meet the demanding needs of customer line configurations and temperature/humidity contraints. A very important step in formulating with Carboset CR-717 resin is to adjust the ph prior to coalescing. (See individual Model Formulas.) The suggested coalescent level for Carboset CR-717 resin is 3-12% on polymer solids, although temperature, humidity and efficiency of coalescent may alter the optimum level. The coalescent recommendations found in this technical data sheet provide good continuous film formation over a broad range of conditions and should be used for initial screening. Bayhydur XP7063 XAMA -7 Bayer Corporation Bayer Corporation

9 Page 9 Formulation Suggestions and Raw Material Information COALESCENT SOLVENTS Characteristics of the coating such as drying time, hardness development, hot print or block resistance, VOC and ultimate performance can vary with the amount and the type of different coalescents. Optimum coalescent selection is dependent on drying speed requirements. Hydrophilic coalescents such as Butyl Cellosolve (Model Formula #CR B) will evaporate more rapidly, leading to quicker development of initial print or block resistance. Use of hydrophobic coalescents (Model Formula #CR may, at times, slow the initial hardness development without altering the final performance properties. SUGGESTED COALESCENTS Ethylene Glycol Butyl Ether (EB) Tripropylene Glycol n-butyl Ether (TPnB) Dipropylene Glycol n-propyl Ether (DPnP) Dipropylene Glycol Methyl Ether (DPM) COALESCENT SUPPLIERS ARCO Chemical Company Aldrich Chemical Company Eastman Chemicals company (Ektasolve ) Dow Chemical Company (Dowanol ) EFFECT OF ph ON OVERSL PROPERTIES Formulation CR B was evaluated at ph 7.0, 7.5, and 8.0, the typical ph range for wood coatings. The only noticeable effect was a slight instability of the formulation at ph below 8 (and at 9.0 or above). This was easily resolved by replacing Surfynol 104H with Surfynol 465. Properties examined that showed essentially no effect throughout the ph range of were: pot life, Konig hardness, chemical resistance (common household reagents), and MEK resistance. OTHER RAW MATERIALS Glycol Ether EB Eastman Chemical Dowanol TPnB Dow Bayhydur XP-7063 Bayer Corporation Kronos 2310 Kronos Incorporated Rheolate 216 Rheox Incorporated Surfynol 104H Air Products Surfynol DF66 Air Products Surfynol DF110D Air Products Byk 333 Byk-Chemie Byk 156 Byk-Chemie Metacure T-12 Air Products