{"id":992,"date":"2026-07-25T01:55:30","date_gmt":"2026-07-25T01:55:30","guid":{"rendered":"http:\/\/localhost:8081\/soyleitechnologies\/sip-1111-polyextend-polymer-modified-asphalt-formulation\/"},"modified":"2026-08-01T13:44:06","modified_gmt":"2026-08-01T13:44:06","slug":"sip-1111-polyextend-polymer-modified-asphalt-formulation","status":"publish","type":"post","link":"https:\/\/soylei-dev.ecochran.dyndns.org\/soyleitechnologies\/sip-1111-polyextend-polymer-modified-asphalt-formulation\/","title":{"rendered":"SIP-1111\u2122 PolyExtend: More Control Over Polymer-Modified Asphalt"},"content":{"rendered":"

Polymer-modified asphalt formulation is a balance among base-stock cost, polymer loading, high-temperature grade, low-temperature grade, elasticity, and production viscosity. SIP-1111\u2122 PolyExtend gives terminals another control variable: reactive soybean-oil chemistry that can be introduced before or after polymer modification to shift the finished binder\u2019s useful grade range.<\/p>\n

In a 2025 laboratory program, a neat binder and three modified formulations were compared by continuous grade, MSCR, softening point, and elastic recovery. All three polymer-modified formulations achieved E-class MSCR performance at 64\u00b0C.<\/p>\n

Addition sequence changed the grade outcome<\/h2>\n

The base binder graded 68.3\/-24.0. Adding 5% polymer produced a continuous grade of 81.1\/-27.7, corresponding to PG 76-22. Introducing 1.5% SIP-1111\u2122 before the same polymer dosage moved the high-temperature grade to 82.2\u00b0C. Adding SIP-1111\u2122 after polymer modification extended the low-temperature result to -28.2\u00b0C.<\/p>\n

\n\n\n\n\n\n\n\n\n
Formulation<\/th>\nContinuous grade<\/th>\nPG grade<\/th>\nFormulation signal<\/th>\n<\/tr>\n<\/thead>\n
Neat base binder<\/th>\n68.3\/-24.0<\/td>\nPG 64-22<\/td>\nStarting blend stock<\/td>\n<\/tr>\n
5% polymer<\/th>\n81.1\/-27.7<\/td>\nPG 76-22<\/td>\nPolymer-only reference<\/td>\n<\/tr>\n
1.5% SIP-1111\u2122 then 5% polymer<\/th>\n82.2\/-25.9<\/td>\nPG 82-22<\/td>\nHigher high-temperature grade<\/td>\n<\/tr>\n
5% polymer then 1.5% SIP-1111\u2122<\/th>\n80.3\/-28.2<\/td>\nPG 76-28<\/td>\nWider low-temperature range<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

The sequence gives a terminal two practical formulation paths from the same base binder and polymer loading. SIP-first favored the high-temperature grade. Polymer-first preserved the PG 76 high-temperature grade while reaching a PG -28 low-temperature grade.<\/p>\n

E-class MSCR performance across the modified binders<\/h2>\n

At 64\u00b0C, each modified formulation reported Jnr 3.2 below the 0.5 kPa-1<\/sup> threshold associated with E-class traffic. Elastic recovery remained above 73% for all three modified binders.<\/p>\n

\n\n\n\n\n\n\n\n\n
Formulation<\/th>\nJnr 3.2 at 64\u00b0C<\/th>\nElastic recovery<\/th>\n<\/tr>\n<\/thead>\n
Neat base binder<\/th>\n2.146 kPa-1<\/sup><\/td>\n0.57%<\/td>\n<\/tr>\n
5% polymer<\/th>\n0.138 kPa-1<\/sup><\/td>\n76.35%<\/td>\n<\/tr>\n
SIP-1111\u2122 before polymer<\/th>\n0.129 kPa-1<\/sup><\/td>\n74.88%<\/td>\n<\/tr>\n
SIP-1111\u2122 after polymer<\/th>\n0.172 kPa-1<\/sup><\/td>\n73.28%<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Elastic response persisted through short-term aging<\/h2>\n

Softening-point and elastic-recovery testing provided a second view of the polymer network. Unaged elastic recovery ranged from 93.8% to 94.5% across the three modified binders. After RTFO aging, the reported range was 88.0% to 89.2%.<\/p>\n

\n\n\n\n\n\n\n\n
Binder<\/th>\nUnaged softening point<\/th>\nUnaged elastic recovery<\/th>\nRTFO softening point<\/th>\nRTFO elastic recovery<\/th>\n<\/tr>\n<\/thead>\n
5% polymer<\/th>\n76.7\u00b0C<\/td>\n93.8%<\/td>\n74.3\u00b0C<\/td>\n88.0%<\/td>\n<\/tr>\n
SIP-1111\u2122 before polymer<\/th>\n77.2\u00b0C<\/td>\n94.3%<\/td>\n71.5\u00b0C<\/td>\n89.2%<\/td>\n<\/tr>\n
SIP-1111\u2122 after polymer<\/th>\n74.9\u00b0C<\/td>\n94.5%<\/td>\n74.7\u00b0C<\/td>\n88.3%<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

What this means for a terminal<\/h2>\n

PolyExtend can help a formulator extract more useful grade range from a difficult or lower-cost base stock while retaining the elastic response expected from a polymer-modified binder. The measured work also gives a foundation for polymer-optimization trials: reduce polymer incrementally, rerun PG and MSCR testing, and select the lowest-cost formulation that meets the required grade and traffic level.<\/p>\n

Base-stock chemistry, polymer type, shear history, digestion time, and addition sequence all affect the outcome. SoyLei works with terminal laboratories to establish the formulation window for the actual materials entering production.<\/p>\n

Review SIP-1111\u2122 PolyExtend documents<\/a> \u00b7 Plan a terminal formulation trial<\/a><\/p>\n

Source Documents<\/h2>\n