{"id":1293,"date":"2025-07-28T05:49:21","date_gmt":"2025-07-28T05:49:21","guid":{"rendered":"https:\/\/ws-b9o6hg.wpkz.site\/?p=1293"},"modified":"2025-07-28T05:49:26","modified_gmt":"2025-07-28T05:49:26","slug":"environmentally-friendly-mmp-as-a-replacement-for-pma-part-4-coating-performance-comparison","status":"publish","type":"post","link":"https:\/\/www.prechems.com\/es\/lab-reports\/environmentally-friendly-mmp-as-a-replacement-for-pma-part-4-coating-performance-comparison\/","title":{"rendered":"Environmentally Friendly MMP as a Replacement for PMA (Part 4): Coating Performance Comparison"},"content":{"rendered":"

Dise\u00f1o experimental<\/strong><\/h2>\n\n\n\n

MMP and PMA were formulated into thinners and applied through spray coating. Technicians\u00a0also used both solvents in practical coating formulations and all tested relevant performance data to compare their advantages and disadvantages in various applications.<\/p>\n\n\n\n

An\u00e1lisis de datos<\/strong><\/strong><\/h2>\n\n\n\n
\n
\n

Prepare Thinner Samples<\/strong><\/p>\n\n\n\n

Four 500 ml sample bottles were prepared with four formulated thinners labeled Thinner Samples 01#, 02#, 03#, and 04#. Detailed compositions are shown in Table 1:<\/p>\n\n\n\n

Component<\/strong><\/strong><\/td>01#(g)<\/strong><\/td>02#(g)<\/strong><\/td>03#(g)<\/strong><\/td>04#(g)<\/strong><\/td><\/tr>
Ethyl Acetate<\/td>30<\/td>30<\/td>30<\/td>30<\/td><\/tr>
Isopropanol<\/td>20<\/td>20<\/td>20<\/td>20<\/td><\/tr>
Isopropanol<\/td>110<\/td>110<\/td>110<\/td>110<\/td><\/tr>
MMP<\/td>0<\/td>15<\/td>25<\/td>40<\/td><\/tr>
PMA<\/td>40<\/td>25<\/td>15<\/td>0<\/td><\/tr>
Total<\/td>200<\/td>200<\/td>200<\/td>200<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Table 1: Thinner Samples<\/p>\n<\/div>\n\n\n\n

\n

Test 1: Performance Comparison of Thinners in PU Topcoat<\/strong><\/strong><\/p>\n\n\n\n

Four in-house thinners and a commercial PU thinner were adjusted to a suitable application viscosity for spray coating. Panel performance was compared as shown in Table 2:<\/p>\n\n\n\n

<\/td>01#<\/strong><\/td>02#<\/strong><\/td>03#<\/strong><\/td>04#<\/strong><\/td>Commercial<\/strong><\/strong><\/td><\/tr>
PU Coating : Thinner<\/td>5:1<\/td>5:1<\/td>5:1<\/td>5:1<\/td>5:1<\/td><\/tr>
Viscosity (s, Ford Cup #4)<\/td>14.01<\/td>14.02<\/td>14.01<\/td>14.01<\/td>14.02<\/td><\/tr>
Surface Dry Time (min)\u200b<\/td>113<\/td>112<\/td>112<\/td>111<\/td>110<\/td><\/tr>
Hard Dry Time
(h)\u200b\u200b<\/td>		24<\/td>24<\/td>23.5<\/td>23.5<\/td>23<\/td><\/tr>
Leveling\u00a0(0\u201310\u00a0scale)<\/td>10<\/td>10<\/td>10<\/td>10<\/td>10<\/td><\/tr>
Pencil Hardness<\/td>2B<\/td>2B<\/td>2B<\/td>2B<\/td>2B<\/td><\/tr>
Gloss (60\u00b0)<\/td>138<\/td>141<\/td>139<\/td>140<\/td>128<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Table 2: Performance of Thinners in PU\u00a0Topcoat<\/p>\n\n\n\n

Conclusion<\/strong><\/strong>: MMP-based PU thinners exhibit slightly faster surface evaporation (shorter dry time) and higher gloss than PMA-based thinners. Other performance\u00a0are equivalent.<\/p>\n<\/div>\n\n\n\n

\n

Test 2: Performance Comparison of Thinners in Nitrocellulose (NC) Topcoat<\/strong><\/strong><\/strong><\/p>\n\n\n\n

Data for NC topcoat applications are shown in Table 3:<\/p>\n\n\n\n

<\/td>01#<\/strong><\/td>02#<\/strong><\/td>03#<\/strong><\/td>04#<\/strong><\/td>\u5916\u8d2d<\/strong><\/td><\/tr>
NC Coating : Thinner<\/td>1:2<\/td>1:2<\/td>1:2<\/td>1:2<\/td>1:2<\/td><\/tr>
Viscosity (s, Ford Cup #4)<\/td>14.05<\/td>14.03<\/td>14.05<\/td>14.04<\/td>14.02<\/td><\/tr>
Surface Dry Time (min)\u200b\u200b<\/td>5<\/td>4<\/td>4<\/td>3<\/td>2<\/td><\/tr>
Hard Dry Time (min)\u200b<\/td>18<\/td>18<\/td>16<\/td>16<\/td>15<\/td><\/tr>
Leveling (0\u201310\u00a0scale)<\/td>10<\/td>10<\/td>10<\/td>10<\/td>10<\/td><\/tr>
Pencil Hardness<\/td>2H<\/td>2H<\/td>2H<\/td>2H<\/td>2H<\/td><\/tr>
Gloss (60\u00b0)<\/td>146<\/td>165<\/td>157<\/td>168<\/td>126<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Table 3: Performance of Thinners in NC Topcoat<\/p>\n\n\n\n

Conclusion<\/strong><\/strong>: MMP-based NC thinners show faster surface evaporation, stronger solvency (lower viscosity), and higher gloss than\u00a0PMA-based thinners. Other performance\u00a0are equivalent.<\/p>\n<\/div>\n\n\n\n

\n

Test 3: Performance Comparison of Thinners in Acrylic Topcoat<\/strong><\/strong><\/strong><\/p>\n\n\n\n

Data for acrylic topcoat applications are shown in Table 4:<\/p>\n\n\n\n

<\/td>01#<\/strong><\/td>02#<\/strong><\/td>03#<\/strong><\/td>04#<\/strong><\/td>\u5916\u8d2d<\/strong><\/td><\/tr>
Acrylic Coating : Thinner<\/td>5:3<\/td>5:3<\/td>5:3<\/td>5:3<\/td>5:3<\/td><\/tr>
Viscosity (s, Ford Cup #4)<\/td>14.10<\/td>14.13<\/td>14.15<\/td>14.14<\/td>14.12<\/td><\/tr>
Surface Dry Time (min)\u200b<\/td>110<\/td>110<\/td>100<\/td>101<\/td>122<\/td><\/tr>
Hard Dry Time (h)\u200b<\/td>24<\/td>25<\/td>25<\/td>24<\/td>25<\/td><\/tr>
Leveling (0\u201310 scale)<\/td>10<\/td>10<\/td>10<\/td>10<\/td>10<\/td><\/tr>
Pencil Hardness<\/td>3B<\/td>3B<\/td>3B<\/td>3B<\/td>3B<\/td><\/tr>
Gloss (60\u00b0)<\/td>130<\/td>135<\/td>136<\/td>141<\/td>129<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Table 4: Performance of Thinners in Acrylic\u00a0Topcoat<\/p>\n\n\n\n

Conclusion<\/strong><\/strong>: MMP-based acrylic thinners exhibit faster surface evaporation and higher gloss than\u00a0PMA-based thinners. Other properties are equivalent.<\/p>\n<\/div>\n <\/div><\/div>\n\n\n\n

Test 4: Performance Comparison of MMP vs. PMA in Appliance Enamel<\/strong><\/strong><\/p>\n\n\n\n

\n
\n
Ingredient<\/strong><\/td>Weight (g)<\/strong><\/strong><\/td><\/tr>
Polyester Resin<\/td>220.1<\/td><\/tr>
Titanium Dioxide<\/td>317.6<\/td><\/tr>
Titanium Dioxide<\/td>5.8<\/td><\/tr>
Titanium Dioxide<\/td>49.2<\/td><\/tr>
Titanium Dioxide<\/td>15.0<\/td><\/tr>
Dispersed via high-speed disperser<\/td><\/tr>
Polyester Resin<\/td>154.2<\/td><\/tr>
Crosslinker<\/td>58.2<\/td><\/tr>
Catalyst<\/td>7.5<\/td><\/tr>
PMA or MMP\u200b<\/td>225<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Table\u00a05: Appliance Enamel Formulation<\/p>\n<\/div>\n\n\n\n

\n
Performance Parameter<\/strong><\/strong><\/td>PMA<\/strong><\/td>MMP<\/strong><\/td><\/tr>
Viscosity (Ford Cup #4, s)<\/td>Initial<\/td>38<\/td>38<\/td><\/tr>
After 2 weeks at 50\u00b0C<\/td>30<\/td>38<\/td><\/tr>
Storage Stability (50\u00b0C, 2 weeks; Score 0\u201310)<\/td>Liquid Separation<\/td>6<\/td>6<\/td><\/tr>
Sedimentation<\/td>9<\/td>10<\/td><\/tr>
Ease of Redispersion<\/td>8<\/td>8<\/td><\/tr>
Curing (MEK Double Rubs)\u200b<\/td>540<\/td>600<\/td><\/tr>
Leveling (Score 0\u201310)<\/td>10<\/td>10<\/td><\/tr>
Leveling (Score 0\u201310)<\/td>75<\/td>78<\/td><\/tr>
Whiteness (4B-3G)\u200b<\/td>78.2<\/td>78.8<\/td><\/tr>
Whiteness (4B-3G)\u200b<\/td>100<\/td>100<\/td><\/tr>
Pencil Hardness<\/td>HB<\/td>HB<\/td><\/tr>
Impact Resistance (Direct, N\u00b7cm)\u200b<\/td>160+<\/td>160+<\/td><\/tr>
Water Resistance (5 weeks; Score 0\u201310)<\/td>Blistering<\/td>10<\/td>10<\/td><\/tr>
Color Change<\/td>10<\/td>10<\/td><\/tr>
Gloss Change<\/td>10<\/td>10<\/td><\/tr>
Hardness<\/td>10<\/td>10<\/td><\/tr>
Xylene Resistance (72 h)<\/td>\u9f13\u8d77<\/td>\u9f13\u8d77<\/td><\/tr>
Acid Resistance (10% HCl, 3 h; Score 0\u201310) Blistering<\/td>3<\/td>3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u200b\u200bTable 6: Performance of MMP vs. PMA in Appliance Enamel\u200b<\/p>\n\n\n\n

Conclusion<\/strong>: Performance of MMP and PMA in appliance enamel is comparable. MMP shows higher curing resistance and gloss.<\/p>\n<\/div>\n <\/div><\/div>\n\n\n\n

Conclusiones experimentales<\/strong><\/h2>\n\n\n\n
    \n
  1. Thinners formulated with MMP and PMA exhibit similar overall performance in PU, NC, and acrylic topcoats. However, MMP-based thinners show faster surface evaporation and higher gloss than PMA-based thinners.<\/li>\n\n\n\n
  2. MMP and PMA demonstrate comparable performance in appliance enamel, with MMP\u00a0offering higher curing resistance and gloss.<\/li>\n<\/ol>\n\n\n\n

    Summary of MMP vs. PMA Application Testing Series:\u200b<\/strong><\/strong><\/h2>\n\n\n\n

    Through comparative testing, the following conclusions are drawn:<\/p>\n\n\n\n

      \n
    1. MMP and PMA exhibit similar evaporation rates (as pure solvents or in blends).<\/li>\n\n\n\n
    2. MMP has stronger solvency than PMA for nitrocellulose, alkyd resins, and acrylic resins.<\/li>\n\n\n\n
    3. MMP has significantly higher water solubility than PMA.<\/li>\n\n\n\n
    4. MMP shows far superior tolerance to non-polar solvents\u00a0versus PMA.<\/li>\n\n\n\n
    5. The thermal stability of PMA and MMP is equivalent under identical conditions.<\/li>\n\n\n\n
    6. Both solvents inhibit hydrolysis when water-saturated. Under unsaturated conditions (4% water), MMP exhibits\u00a0minor\u00a0acid value changes and better stability.<\/li>\n\n\n\n
    7. MMP-based thinners show faster surface evaporation and higher gloss in PU, NC, and acrylic topcoats versus PMA.<\/li>\n\n\n\n
    8. MMP offers higher curing resistance and gloss in appliance enamel.<\/li>\n<\/ol>\n\n\n\n

      Overall Conclusion<\/strong>:\u00a0MMP matches or exceeds PMA in all solvent performance and practical coating applications. With higher solvency and tolerance, MMP reduces the need for active solvents\u00a0and allows greater use of low-cost diluents, lowering total solvent costs. As an\u00a0eco-friendly solvent, MMP is a viable substitute for PMA in coatings.<\/p>\n\n\n\n

      Fondo<\/strong><\/h2>\n\n\n\n

      Solvents are widely used in coatings and inks to dissolve components (e.g., active agents, polymer resins, pigments) for ease of transport and application. However, solvents evaporate during film formation, releasing volatile organic compounds (VOCs) into the atmosphere. Global environmental regulations are increasingly tightening restrictions on solvent emissions, thereby driving the demand for high-solvency, low-toxicity alternatives to minimize solvent usage and reduce VOC emissions.<\/p>\n\n\n\n

      Oxygenated solvents like glycol ethers and glycol ether esters combine ether\/alcohol or ether\/ester properties for broader applicability. PMA, an exemplary ether-ester solvent, is widely used in coatings. Recent advancements have introduced MMP as a superior alternative to PMA. This study compares MMP and PMA in coating applications.<\/p>\n\n\n\n

      Para m\u00e1s informaci\u00f3n sobre disolventes funcionales, visite Disolvente PREC MMP<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

      MMP and PMA were formulated into thinners and applied through spray coating. Technicians\u00a0also used both solvents in practical coating formulations and all tested relevant performance data to compare their advantages and disadvantages in various applications. Test 4: Performance Comparison of MMP vs. PMA in Appliance Enamel Through comparative testing, the following conclusions are drawn: Overall […]<\/p>\n","protected":false},"author":2,"featured_media":1294,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Environmentally Friendly MMP as a Replacement for PMA (Part 4): Coating Performance Comparison","_seopress_titles_desc":"MMP and PMA were formulated into thinners and applied through spray coating. Technicians also used both solvents in practical coating formulations and all tested relevant performance data to compare their advantages and disadvantages in various applications.","_seopress_robots_index":"","_gspb_post_css":"#gspb_row-id-gsbp-3458db1,#gspb_row-id-gsbp-699f96c{justify-content:space-between;margin-top:0;margin-bottom:0;display:flex;flex-wrap:wrap}#gspb_row-id-gsbp-699f96c>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}.gspb_row{position:relative}div[id^=gspb_col-id]{box-sizing:border-box;position:relative;padding:var(--gs-row-column-padding, 15px min(3vw, 20px))}#gspb_col-id-gsbp-aa8dd06.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-aa8dd06.gspb_row__col--6{width:100%}}#gspb_col-id-gsbp-b17bace.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-b17bace.gspb_row__col--6{width:100%}}#gspb_row-id-gsbp-3458db1>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}body.gspb-bodyfront #gspb_row-id-gsbp-3458db1>.gspb_row__content,body.gspb-bodyfront #gspb_row-id-gsbp-699f96c>.gspb_row__content{width:var(--theme-container-width, 1200px);max-width:var(--theme-normal-container-max-width, 1200px)}#gspb_col-id-gsbp-7d07bba.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-7d07bba.gspb_row__col--6{width:100%}}#gspb_col-id-gsbp-ec992e1.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-ec992e1.gspb_row__col--6{width:100%}}#gspb_col-id-gsbp-7784b9e.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-7784b9e.gspb_row__col--6{width:100%}}#gspb_col-id-gsbp-4a19517.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-4a19517.gspb_row__col--6{width:100%}}","footnotes":""},"categories":[14],"tags":[],"class_list":{"0":"post-1293","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-lab-reports"},"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/posts\/1293","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/comments?post=1293"}],"version-history":[{"count":0,"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/posts\/1293\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/media\/1294"}],"wp:attachment":[{"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/media?parent=1293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/categories?post=1293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.prechems.com\/es\/wp-json\/wp\/v2\/tags?post=1293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}