Orange Juice Pass Pass Grape Juice Pass Pass Ketchup Pass Pass Coff - PDF document

Orange Juice Pass Pass Grape Juice 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 Pass: No Delamination No Swelling No Swelling No Blistering No Blistering No Whitening 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 720.82 83.82 Add water, mix Water 98.31 11.82 (to maintain 30% T.S.) Add Bayhydur with moderate agitation, mix for 1 - 2 minutes. Bayhyd

ur XP-7063 42.06 4.37 Crosslinker 8
ur XP-7063 42.06 4.37 Crosslinker 861.19 100.01 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. 8.58 Density, lb./gal. 8.61 VOC pounds/gallon 0.64 VOC pounds/gallon 0.73 gm/liter 76 gm/liter 88 Viscosity -#2 Zahn, sec. 50 - 70 pH 7.5 - 8.0 pH 8.0 - 8.2 Ford #4 Cup Viscosity - seconds 20-30 Gel Time !32 hrs. Gloss 20¡/60¡ 81/88 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. 8.58
Volume, % 28.5 Density, lb./gal. 8.58 Density, lb./gal. 8.61 VOC pounds/gallon 0.64 VOC pounds/gallon 0.73 gm/liter 76 gm/liter 88 Viscosity -#2 Zahn, sec. 50 - 70 pH 7.5 - 8.0 pH 8.0 - 8.2 Ford #4 Cup Viscosity - seconds 20-30 Gel Time !32 hrs. Gloss 20¡/60¡ 81/88 PHYSICAL PROPERTIES OF 2K MIXTURE Total Solids by Weight, % 31.04 Total Solids by Weight, % 30.0 Total Solids by Volume, % 29.97 Total Solids by Volume, % 28.63 Density, lb./gal. 8.61 Density, lb./gal. 8.61 VOC pounds/gallon 0.34 VOC pounds/gallon 0.29 gm/liter 41 gm/liter 35 Viscosity -#2 Zahn, sec. 30 Ð 40 pH 7.5 - 8.0 pH 8.0 - 8.2 Ford #4Cup Viscosity - secon

ds 10-20 Gel Time !32 hrs. Gloss 20¡
ds 10-20 Gel Time !32 hrs. Gloss 20¡/60¡ 81/88 Surfynol¨ 104H 5.39 0.68 Flow Additive Water 34.44 4.15 Surfynol¨ DF66 0.70 0.08 Defoamer High speed disperse the following four ingredients to a Hegman of 7.0 Water 36.82 4.44 Byk¨-156 2.93 0.33 Dispersant Surfynol DF66 0.67 0.08 Defoamer Kronos¨ 2310 150.32 4.54 Pigment Add with good agitation 10% Ammonium Benzoate 9.43 1.10 Flash Rust Inhibitor Adjust viscosity to 30 secs using Zahn #2 Rheolate¨ 216 0.97 0.11 Rheology Modifier Add with good agitation Metacureª T-12 0.03 0.002 Catalyst* 967.64 100.00 2-K System: Mixing of Component #1 with Bayhydur XP-7063 VOC pounds/ga

llon 0.75 VOC pounds/gallon 0.65 gm/l
llon 0.75 VOC pounds/gallon 0.65 gm/liter 89 gm/liter 78 Viscosity -#2 Zahn, sec. 30 - 40 pH 7.5 - 8.0 pH 8.0 - 8.2 Ford #4 Cup Viscosity - seconds 20-30 Gel Time !32 hrs. Gloss 20¡/60¡ 50/80 Formulation Suggestions and Raw Material Information CURE RATE In most 2-K coating systems, reaction between components ÒAÓ and ÒBÓ 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 conti

nue to increase over a one-week period a
nue to increase over a one-week period at room temperature, with most of the cure completed by 24 hours. CURE RATE Ð USE OF CATALYST Accelerated cure rates can be obtained through the use of small amounts of catalyst. Formulations CR-717-01D and 02B are essentially the same, except for a small addition of Metacureª 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. Metacureª T-12 Air Products CROSSLINKERS Evaluation thus far has included water dispersible isocyanate and polyfunct

ional aziridine crosslinkers (Bayhydur X
ional 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 modestplasticizing 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 optimiz

e coating properties. Our model formula
e 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.) Bayhydur XP7063 Bayer Corporation XAMA¨-7 Bayer Corporation POT LIFE In some 2-K coating systems,

the end of useable pot life may be obser
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 ¨) Dow Chemical Company (Dowanolª) EFFECT OF pH ON OVERSL PROPERTIES Formulation CR-717-02B 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