# US 9,752,068 B2 · Hot melt pressure sensitive adhesive and thermoset comprising styrene-butadiene polymers having high vinyl and high di-block > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,068 B2 - Document ID: US9752068B2 - Status: Granted - Kind: B2 - Application number: 14/586,079 - Filed: 2014-12-30 - Published: 2015-07-09 - Granted: 2017-09-05 - Earliest claimed: 2014-01-06 - Assignees: Kraton Polymers U.S. LLC - Applicants: Kraton Polymers U.S. LLC - Inventors: Jason Drew Gillen - Web page: https://patentgrep.com/patent/US9752068B2 ## CPC - C09J 193/04: Rosin - C08L 53/02: of vinyl-aromatic monomers and conjugated dienes - C09J 125/02: Homopolymers or copolymers of hydrocarbons - C09J 125/06: Polystyrene - C09J 153/02: Vinyl aromatic monomers and conjugated dienes - C09J 171/02: Polyalkylene oxides - C09J 171/12: Polyphenylene oxides - C09J 191/00: Adhesives based on oils, fats or waxes; Adhesives based on derivatives thereof - C08G 2170/20: Compositions for hot melt adhesives - C08L 91/00: Compositions of oils, fats or waxes; Compositions of derivatives thereof - C08L 93/04: Rosin - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ## Abstract The present invention provides methods and systems for a hot melt pressure sensitive adhesive and thermoset that comprises from about 5 to about 50 wt. % of a block copolymer, from about 0 to about 75 wt. % of a tackifying resin, from about 0 to about 45 wt. % of an oil, and from about 0 to about 3 wt. % of an antioxidant. ## Claims ### Claim 1 A hot melt pressure sensitive adhesive, comprising: from about 20 to about 35 wt. % of a block copolymer composition comprising (i) a diblock copolymer comprising one block of a monovinylaromatic hydrocarbon, an A block, and one block of a conjugated diene, a B block, having a peak molecular weight from 30,000 to 78,000 and a vinyl content from 35 to 80 mol percent based on the number of repeat monomer units in the conjugated diene block, and (ii) a block copolymer comprising at least two blocks of monovinylaromatic hydrocarbon and at least one block of conjugated diene, the block copolymer selected from the group consisting of linear triblock copolymers having a peak molecular weight that is 1.5 to 3.0 times the peak molecular weight of the diblock copolymer, multiarm coupled block copolymers having a peak molecular weight that is 1.5 to 9.0 times the peak molecular weight of the diblock copolymer, and mixtures thereof, wherein each block copolymer has a vinyl content from 35 to 80 mol percent based on the number of repeat monomer units in the conjugated diene block, wherein the melt index for the block copolymer composition is from about 20 g/10 min. to about 35 g/10 min. as determined by ASTM D-1238, condition G (200° C., 5 kg) and wherein the ratio of (i) to (ii) in the block copolymer composition is greater than 1:1; from about 30 to about 60 wt. % of a tackifying resin; from about 0 to about 45 wt. % of an oil; and from about 0 to about 3 wt. % of an antioxidant, wherein said wt. % is based on the total weight of the hot melt pressure sensitive adhesive. ### Claim 2 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein the block copolymer (ii) has a polystyrene content (PSC) within a range of from about 10 to about 55 wt. %. ### Claim 3 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, further comprising an unsaturated block copolymer. ### Claim 4 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein said oil is a paraffinic and/or naphthenic processing oil. ### Claim 5 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein the tackifying resin is compatible with the B block and is selected from the group consisting of C5 hydrocarbon resins, hydrogenated C9 hydrocarbon resins, rosin esters, and styrenated terpene resins. ### Claim 6 (depends on 5) The hot melt pressure sensitive adhesive according to claim 5, wherein the tackifying resin is a rosin ester tackifier resin or a terpene tackifier resin. ### Claim 7 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein the tackifying resin is compatible with the A block and is selected from the group consisting of coumarone-indene rosin, polyindene resin, poly(methyl indene) resin, polystyrene resin, vinyltoluene-alphamethylstyrene resin, alphamethylstyrene resin and polyphenylene ether. ### Claim 8 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein the amount of block copolymer composition is from about 23 to about 32 wt. %. ### Claim 9 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein the oil is present in an amount of from about 10 to 35 wt. %. ### Claim 10 (depends on 1) The hot melt pressure sensitive adhesive according to claim 1, wherein the block copolymer (ii) has a vinyl content of about 46 mol % to about 70 mol %. ### Claim 11 (depends on 1) The thermoset according to claim 1, wherein the oil is a naphthenic processing oil present in an amount of from about 0 to about 10 wt. %.