# US 2020/0399408 A1 · Fusible oil gel compositions and methods of making and using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399408 A1 - Document ID: US20200399408A1 - Status: Published application - Kind: A1 - Application number: 16/948,224 - Filed: 2020-09-09 - Published: 2020-12-24 - Earliest claimed: 2017-03-10 - Assignees: Kraton Polymers U.S. LLC - Applicants: Kraton Polymers U.S. LLC - Inventors: Catherine A.L. Maris; Erin B. Murphy; Robert C. Bening; Xiangyun Wei; Xavier D. Muyldermans - Web page: https://patentgrep.com/patent/US20200399408A1 ## CPC - C08F 212/08: Styrene - C08F 2/48: by ultraviolet or visible light - C08F 287/00: Macromolecular compounds obtained by polymerising monomers on to block polymers - C08F 299/00: Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers - C08J 3/075: Macromolecular gels - C08K 5/005: {Stabilisers against oxidation, heat, light, ozone} - C08K 5/10: Esters; Ether-esters - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract A gel composition is herein disclosed. According to one embodiment, the composition comprises a (i) a styrenic block copolymer, (ii) an oil; and (iii) optional additives; wherein the styrenic block copolymer has a structure ABi or iAB, wherein A is a monoalkenyl arene block, B is a conjugated diene block, and i is an isoprene attachment. The isoprene attachment i is substantially unsaturated and the conjugated diene block B is substantially saturated. The gel composition before curing exhibits thixotropic behavior, with a viscosity ranging from about 5000 mPa.s to about 30000 mPa.s. at 25° C. and a shear rate of 20 s−1. ## Claims ### Claim 1 A gel composition comprising: (i) a styrenic block copolymer, (ii) an oil; and (iii) optional additives: wherein the styrenic block copolymer has a structure ABi or iAB, where A is a monoalkenyl arene block, B is a conjugated diene block, i is an isoprene attachment, the isoprene attachment i is substantially unsaturated and B is substantially saturated, the monoalkenyl arene block has a molecular weight ranging from 35 kg/mol to 100 kg/mol; wherein the gel composition before curing is not solid, with a viscosity ranging from about 5000 mPa.s to about 30000 mPa.s. at 25° C. and a shear rate of 20 s−1; and the gel composition after curing is solid. ### Claim 2 (depends on 1) The gel composition of claim 1, wherein the styrenic block copolymer has a structure of ABi or iAB, and wherein the isoprene attachment i has a hydrogenation level of <50% and the conjugated diene B block has a hydrogenation level of >90%. ### Claim 3 (depends on 2) The gel composition of claim 2, wherein the isoprene attachment i has a hydrogenation level of <40% and the conjugated diene B block has a hydrogenation level of >95%. ### Claim 4 (depends on 3) The gel composition of claim 3, wherein the isoprene attachment i has a hydrogenation level of <35% and the conjugated diene B block has a hydrogenation level of >98%. ### Claim 5 (depends on 1) The gel composition of claim 1, wherein at least 75% of double bonds present in the conjugated diene B block are hydrogenated. ### Claim 6 (depends on 1) The gel composition of claim 1, wherein from about 20% to about 60% of the double bonds in the isoprene attachment i are hydrogenated. ### Claim 7 (depends on 1) The gel composition of claim 1, wherein a difference in the hydrogenation level of the conjugated diene B block block and the hydrogenation level of the isoprene attachment i is greater than about 20%. ### Claim 8 (depends on 1) The gel composition of claim 1, wherein the styrenic block copolymer has a total residual unsaturation of from about 0.2 milliequivalents/gram to about 4 milliequivalents/gram. ### Claim 9 (depends on 1) The gel composition of claim 1, wherein the monoalkenyl arene A block comprises styrene, alpha-methylstyrene, para-methylstyrene, vinyl toluene, vinylnaphthalene, diphenyl ethylene, para-butyl styrene, or mixtures thereof ### Claim 10 (depends on 1) The gel composition of claim 1, wherein the monoalkenyl arene A block has a polystyrene content of from about 15% to about 40%. ### Claim 11 (depends on 1) The gel composition of claim 1, wherein the monoalkenyl arene A block has an apparent molecular weight of at least 40 kg/mol. ### Claim 12 (depends on 1) The gel composition of claim 1, wherein the conjugated diene B block comprises conjugated 1,3-butadiene or conjugated substituted butadienes such as, piperylene, 2,3-dimethyl-1,3 -butadiene, 1-phenyl-1,3-butadiene or mixtures thereof. ### Claim 13 (depends on 1) The gel composition of claim 1, wherein the conjugated diene block B has an apparent molecular weight of from about 30 kg/mol to about 150 kg/mol. ### Claim 14 (depends on 1) The gel composition of claim 1, wherein the isoprene attachment i has an apparent molecular weight of from about 2 kg/mol to about 15 kg/mol. ### Claim 15 (depends on 1) The gel composition of claim 1, wherein the styrenic block copolymer further comprises less than about 5 wt. % of a styrenic triblock copolymer based on the total weight of the styrenic block copolymer. ### Claim 16 (depends on 1) The gel composition of claim 1, wherein the styrenic block copolymer is present in an amount of from about 1 wt. % to about 30 wt. % based on the total weight of the composition. ### Claim 17 (depends on 1) The gel composition of claim 1, wherein the oil is present in an amount of from about 70 wt. % to about 99 wt. % based on the total weight of the composition, and wherein the oil comprises a paraffin, a mineral oil, a gas-to-liquid oil, a synthetic oil, or combinations thereof ### Claim 18 (depends on 1) The gel composition of claim 1, wherein the optional additives comprise an antioxidant, a metal deactivator, a curing accelerator, a rheology modifier, or combinations thereof. ### Claim 19 (depends on 1) The gel composition of claim 1, wherein the gel composition is cured by any of UV irradiation, thermal treatment, or both, to form a solid gel after curing.