# US 2008/0188607 A1 · Low odor resin compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0188607 A1 - Document ID: US20080188607A1 - Status: Published application - Kind: A1 - Application number: 11/971,247 - Filed: 2008-01-09 - Published: 2008-08-07 - Earliest claimed: 2007-02-07 - Assignees: NOVA Chemicals Inc. - Inventors: William Guerrieri; Stephen Michalik - Web page: https://patentgrep.com/patent/US20080188607A1 ## CPC - C08K 3/346: {Clay} - C08L 9/00: Compositions of homopolymers or copolymers of conjugated diene hydrocarbons - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A method of reducing the odor of a resin that includes the step of adding about 0.1% to about 10% by weight of an absorbent clay to the resin. A resin composition with low odor is provided that includes 60% to 99.9% of a styrenic polymer; optionally 0.1% to 30% of one or more elastomeric polymers; and 0.1% to 10% of an absorbent clay. The styrenic polymer is formed by polymerizing a mixture containing 35% to 100% by weight of one or more styrenic monomers, optionally 1% to 49% by weight of one or more maleate-type monomers, and optionally 1% to 65% by weight of one or more other polymerizable monomers. The resin composition and/or method can be used to make molded articles or a resin foam. ## Claims ### Claim 1 A resin composition comprising: a) about 65% to about 99.9% by weight of a polymer formed by polymerizing a mixture comprising: i) about 35% to about 100% by weight of one or more styrenic monomers, ii) optionally about 1% to about 49% by weight of one or more maleate-type monomers, and iii) optionally about 1% to about 65% by weight of one or more other polymerizable monomers; b) optionally about 0.1% to about 30% by weight of one or more elastomeric polymers; and c) about 0.1% to about 10% by weight of an absorbent clay. ### Claim 2 (depends on 1) The resin composition according to claim 1, wherein the absorbent clay is one or more selected from the group consisting of pyrophyllite, talc, vermiculite, sauconite, saponite, nontronite and montmorillonite, kaolinite, dickite, halloysite, nacrite, and combinations thereof. ### Claim 3 (depends on 1) The resin composition according to claim 1, wherein the clay comprises bentonite. ### Claim 4 (depends on 1) The resin composition according to claim 1, wherein the styrenic monomers are selected from the group consisting of styrene, p-methyl styrene, α-methyl styrene, tertiary butyl styrene, dimethyl styrene, nuclear brominated or chlorinated derivatives thereof and combinations thereof. ### Claim 5 (depends on 1) The resin composition according to claim 1, wherein the maleate-type monomers are selected from the group consisting of maleic anhydride, maleic acid, fumaric acid, C1-C12 linear, branched or cyclic alkyl esters of maleic acid, C1-C12 linear, branched or cyclic alkyl esters of fumaric acid, itaconic acid, C1-C12 linear, branched or cyclic alkyl esters of itaconic acid, and itaconic anhydride. ### Claim 6 (depends on 1) The resin composition according to claim 1, wherein the elastomeric polymers are selected from the group consisting of homopolymers of butadiene or isoprene, and random, block, AB diblock, or ABA triblock copolymers of a conjugated diene with a styrenic monomer and/or acrylonitrile. ### Claim 7 (depends on 1) The resin composition according to claim 1, wherein the elastomeric polymers are one or more block copolymers selected from the group consisting of diblock and triblock copolymers of styrene-butadiene, styrene-butadiene-styrene, styrene-isoprene, styrene-isoprene-styrene, partially hydrogenated styrene-isoprene-styrene and combinations thereof. ### Claim 8 (depends on 1) The resin composition according to claim 1, wherein the other monomers are one or more selected from the group consisting of divinylbenzene, conjugated dienes, alkyl methacrylates, alkyl acrylates, acrylonitrile, alpha olefins, and combinations thereof. ### Claim 9 (depends on 1) The resin composition according to claim 1 comprising one or more additives selected from the group consisting of heat stabilizers, light stabilizers, softening agents; plasticizers, dyes, pigments; anti-blocking agents; slip agents; lubricants; coloring agents; antioxidants; ultraviolet light absorbers; fillers; anti-static agents; impact modifiers, and combinations thereof. ### Claim 10 (depends on 1) The resin composition according to claim 1, wherein the weight average molecular weight of the copolymer is from about 20,000 to about 1,000,000. ### Claim 11 (depends on 1) The resin composition according to claim 1 having a styrene monomer headspace value determined by gas chromatography of not more than 30 ppm. ### Claim 12 (depends on 1) The resin composition according to claim 1 having a butadiene dimer headspace value determined by gas chromatography of not more than 5 ppm. ### Claim 13 (depends on 1) The resin composition according to claim 1 having a tensile strength of greater than 55 MPa determined by ISO 527-2 (First Edition 1993-06-15). ### Claim 14 (depends on 1) The resin composition according to claim 1 having an Izod Impact value of greater than 5 kJ/m2 determined by ISO 180 (Third Edition 2000-12-15 with Amendment 1, 2006-12-01). ### Claim 15 (depends on 1) A molded article comprising the resin according to claim 1. ### Claim 16 (depends on 1) A resin foam comprising the resin according to claim 1. ### Claim 17 A method of reducing the odor of a resin comprising adding about 0.1% to about 10% by weight of an absorbent clay to the resin. ### Claim 18 (depends on 17) The method according to claim 17, wherein the absorbent clay is one or more selected from the group consisting of pyrophyllite, talc, vermiculite, sauconite, saponite, nontronite and montmorillonite, kaolinite, dickite, halloysite, nacrite, and combinations thereof. ### Claim 19 (depends on 17) The method according to claim 17, wherein the clay comprises bentonite. ### Claim 20 (depends on 17) The method according to claim 17, wherein the monomer headspace value determined by gas chromatography for the resin is not more than 30 ppm.