Document rpbggqB8zjv7B277x4NX3Eg8v

PRODUCT DEVELOPMENT REPORT PAINT, VARNISH & LACQUER LABORATORIES JANUARY, 1961 PRODUCT DEVEIOPMEMT REPORT PAINT, VARNISH & LACQUER LABORATORIES JANUARY, 1961 r> g *-D00657? -3- A good intumescent coating makes use of what is called a "triangulated formula" or one making use of a combination of a polyol, a mono or diammonium phosphate and an amine. This combination can be used in both emulsion types and solvent thinned types of fire retardant coatings. Some caution should be taken when these paints serve as top coats over various paints or primers under other coats. The salts in these paints could give trouble in some cases and no recommendations should be made as such without previous checking. The public will want a fire retardant coating that has all the good properties of a quality paint arid at a reasonable cost. They will only pay for a limited increase in price, based on what they consider this safety insurance to be worth. The intumescent factor can be easily demonstrated by coating a Horest Chart or sized cardboard with a coat of "Duotex" and holding a match flame under the dried film. Almost immediate swelling and puffing of the film will occur. Burn an uncoated section of Horest Chart for a very effective comparison. Paul Hawkins METALLIC GOLD OR BRONZE FINISH A new metallic gold finish was prepared. This work was based on previous data gained from our experience with aluminum powder in a latex emulsion system. The metallic gold finish is obtained by directly substituting M-458 (No. 11 Brush .Brass Lining) pigment for Reynolds Aluminum 4-591 and the system was found to be compatible. The direct replacement of 4-591 with M-458 at the same weight level was found to give a light gold appearance in the dry film. Higher concentrations of the M-458 are quite compatible at double the amount. This gives a color range from a light yellow to a bright gold finish. As a safety factor any unused paint should be dumped as a precaution against any possible gassing. Jerry Waters TALLATE DRIERS Because of the interest cited in this subject, we are quoting verbatim# a report compiled by Mr. G. H. Eick of our Organic Chemical Department in Jacksonville. "At the present time, tallates enjoy a position of being definitely equal po Napthenates for dry, solubility, stability characteristics, and are superior in color, odor and cost. The cost factor appears likely to become more of a major issue with time. As GLD006578 the months progress, world production of naphthenic acids Is decreasing, and high quality naphthenic acids are in very short supply. Conversely, tall oil acids are plentiful with quality high and prospects of even improved quality. The drier manufacturers can market tallate driers between $14 to $20 cheaper, than comparable naphthenates, on a 55 gallon drum basis. Another major factor in favor of tall oil scids is their uniformity} whereas, naphthenic acids vary considerably from one fractionizatlon to another, tall oil acids are uniform. Of course, to the protective coating industry, the superiority of color and odor of tallates is much in their favor. The advantages of tallate driers appear to bes 1. Lower Cost;" 2. Dependability 3. Plentiful supply 4. More active per metal percentage 5. Tend to retain activity 6. Acid quality more uniform 7. Tallates, including lead, are equivalent to naphthenates over a wide range of tempejrature from -15 C to 60*C 8. No oxidation along *the side of the container, or sklipming on the surface of the liquid drier, since the change to low-rosin tall oil fatty acids, several years ago 9. Stability of tallate driers in admixture is good; they are compatible with one another 10. Reactivity of tallate driers in pigmented systems is no more of a problem than with naphthenates 11. Tallates can be substituted across-the-board, on a direct metal basis for naphthenates, almost without exception in any formulation , 12. No change in drying speed, comparability, or quality standards, wherever naphthenates are replaced with tallates 13. A ten per cent savings in the tallate type of drier, compared to the naphthenate 14. Tallates are better in odor and have the best residual odor of any of the driers on the market, so that they may be used in low odor and odorless paints, without any difficulty. The advantages of naphthenates are: 1. Can be used in Government specifications prohibiting the use of rosin 2. Tend to be less viscous at high solids content (equivalent metal strengths.) Excerpts from letters received by drier manufacturers, in this study: Mooney Chemicals...'tallate driers have made tremendous strides since the war, when low quality tallates built many prejudices into peoples' mind'... GLD006579 -5- ..s'- - v.H .:*. s >.*.c-: Advance Solvents.,..'our sales and production figures definitely;show that the use of tallate driers is increasing annually, and the gap between'these and naphthenate driers is gradually becoming narrower'.... ' Karshaw Chemicals....'the light color and sparkling clarity of these improved Linoresinates are indicative of the care and control that have gone into'their ; manufacture. Tests indicate good stability, both in storage and when dispersed : in paint and varnish vehicles. Their excellent overall drying performance is comparable with that of naphthenates1...... Nuodex Products......... 'in regard to odor the tallates are definitely milder in odor. Dry performance of the two types of drier is substantially equal'.... TrpycGhesnichla.....'we find that Troyolin oleate-linoleate driers are superior to the naphthenates and, in some instances, to the octoates in the following properties: 1. 'Better efficiency -- the Troyolins are based on a combination of oleic and lineoleic acids; these show an improvement in drying, over the naphthenates, from zero to twenty per cent. They are at least .equal in drying efficiency and, in many instances, they show a definitely better dry. We recently ran a.drying comparison in a long oil alkyd enamel.' The alkyd vehicle was a 23X phthalic alkyd. We found an improvement of 1-1/2 hours in drying time, using our Troylin Driers, as against competitive naphthenates.' 2. 'Color -- our lead and manganese are extremely pale. The lead is 1-2 units lighter in color than competitive lead naphthanates, and the manganese is very much lighter, being as pale as some competitive lead driers. They may, therefore, be used in whites and light tints with miniguimdtlscoioratlon. For durability, manganese - lead is the ideal drier combination for house paints; but, they are rarely used because of the staining effect of manganese naphthenate. Our Troylin manganese - lead (combination in such paints should be satisfactory. 'Because of the low rosin content, they may be used in specification paints as they have never given a positive Lleberman - Storch test, although millions of gallons of paint requiring a negative test have been made with these driers.' George H. Eick mhd Gl_D00b580