# US 2013/0157049 A1 · Laminates of Partially Scorched Adhesive and DVA Film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157049 A1 - Document ID: US20130157049A1 - Status: Published application - Kind: A1 - Application number: 13/330,233 - Filed: 2011-12-19 - Published: 2013-06-20 - Earliest claimed: 2011-12-19 - Assignees: ExxonMobil Chemical Patents Inc. - Inventors: Porter C. Shannon; Michael J. Vinck - Web page: https://patentgrep.com/patent/US20130157049A1 ## CPC - C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) - B29B 7/60: for feeding, e.g. end guides for the incoming material {(B29B7/7615 takes precedence; feeding predetermined amounts for mixing in general B01F35/714)} - B29B 7/7466: {Combinations of similar mixers} - B29B 7/748: {Plants (B29B7/7433, B29B7/7485, B29B7/7495 take precedence)} - B29B 7/7495: {for mixing rubber} - B29C 48/0017: {combined with blow-moulding or thermoforming} - B29C 48/022: {characterised by the choice of material} - B29C 48/21: the layers being joined at their surfaces - B29C 48/49: using two or more extruders to feed one die or nozzle - B29C 48/92: Measuring, controlling or regulating - C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence) - C09J 7/20: characterised by their carriers - B29B 7/38: rotary (B29B7/52 takes precedence) - B29C 48/09: Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels - B29C 48/10: flexible, e.g. blown foils - B29C 2948/92704: Temperature - B29C 2948/92714: Degree of crosslinking, solidification, crystallinity or homogeneity - C09J 2415/006: in the substrate - C09J 2453/00: Presence of block copolymer - C09J 2477/006: in the substrate - Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - 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) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A process to produce a laminate comprising coextruding a dynamically vulcanized alloy (DVA) film with an adhesive layer comprising a vulcanizable elastomeric composition through a die to produce the laminate. The process provides a residence time of the vulcanizable elastomeric composition in the melt to partially scorch the vulcanizable elastomeric composition. A melt of the DVA is in contact with the melt of the vulcanizable elastomeric composition in the die for at least 5 seconds, optionally also with a change in the area of the contact between the DVA film and the adhesive layer as it passes through the die, to increase the adhesion between the adhesive layer and the DVA layer relative to a shorter co-residence time. A laminate and a pneumatic tire comprising the laminate are also disclosed. ## Claims ### Claim 1 A process to produce a laminate comprising: coextruding a dynamically vulcanized alloy with an adhesive composition through a die to produce a laminate comprising a film of the dynamically vulcanized alloy and a layer of the adhesive composition; wherein the dynamically vulcanized alloy comprises a thermoplastic elastomer composition containing a thermoplastic resin as a continuous phase, and a rubber composition dispersed therein, as a dispersed phase; wherein the adhesive composition comprises a vulcanizable elastomeric composition; providing a residence time of the adhesive composition in a molten state to partially scorch the vulcanizable elastomeric composition; and providing a co-residence time in the die of a melt of the dynamically vulcanized alloy in contact at a surface with the melt of the adhesive composition of at least 5 seconds. ### Claim 2 (depends on 1) The process of claim 1, comprising changing an area of the contact surface between the dynamically vulcanized alloy melt and the adhesive composition melt during the co-residence time in the die. ### Claim 3 (depends on 2) The process of claim 2, comprising increasing the area of the contact surface between the dynamically vulcanized alloy melt and the adhesive composition melt during the co-residence time in the die by from 5% to 300% with respect to an initial area of contact surface. ### Claim 4 (depends on 1) The process according to claim 1, wherein the laminate has a Mocon air permeation coefficient of less than or equal to about 25×10−12 cc cm/cm2 sec cm Hg at 30° C. ### Claim 5 (depends on 1) The process according to claim 1, wherein the adhesive layer has a self-tack of less than about 10 N/cm. ### Claim 6 (depends on 1) The process according to claim 1, wherein the adhesive layer has a tack to an unvulcanized diene-based rubber of greater than or equal to about 10 N/cm. ### Claim 7 (depends on 1) The process according to claim 1, wherein the thermoplastic of the continuous phase comprises a polyamide and wherein the rubber composition of the dispersed phase comprises a halogenated copolymer of isobutylene and paramethylstyrene. ### Claim 8 (depends on 1) The process according to claim 1, wherein the adhesive composition comprises an epoxidized styrene-butadiene-based block copolymer. ### Claim 9 (depends on 1) The process according to claim 1, wherein the vulcanizable elastomeric composition comprises functionalized groups reactive with amine groups in the thermoplastic resin of the dynamically vulcanized alloy. ### Claim 10 (depends on 1) The process according to claim 1, further comprising co-vulcanizing the adhesive composition with the dynamically vulcanized alloy. ### Claim 11 (depends on 1) The process according to claim 1, wherein the dynamically vulcanized alloy is essentially free of added plasticizer. ### Claim 12 (depends on 1) The process according to claim 1, wherein the dynamically vulcanized alloy comprises butylbenzylsulfonamide (BBSA), poly(isobutylene succinic anhydride), or a combination thereof. ### Claim 13 (depends on 1) The process according to claim 1, comprising a co-residence time of at least 7 seconds. ### Claim 14 (depends on 1) The process according to claim 1, comprising a co-residence time of 10 seconds or more. ### Claim 15 (depends on 1) The process according to claim 1, further comprising incorporating the laminate into a tire as an innerliner. ### Claim 16 In a process for producing a laminate comprising coextruding a dynamically vulcanized alloy with an adhesive composition through a die to produce the laminate, wherein the dynamically vulcanized alloy comprises a thermoplastic elastomer composition containing a thermoplastic resin as a continuous phase, and a rubber composition dispersed therein, as a dispersed phase, wherein the adhesive composition comprises a vulcanizable elastomeric composition, wherein the vulcanizable elastomeric composition has a total residence time in a molten state to partially scorch the vulcanizable elastomeric composition in the laminate, and wherein there is a co-residence time of a melt of the thermoplastic elastomer composition in contact at a surface with a melt of the vulcanizable elastomeric composition in the die, a method to improve adhesion between the thermoplastic elastomer composition and the adhesive composition, comprising: providing a die to increase the co-residence time in the die to at least 5 seconds. ### Claim 17 (depends on 16) The method of claim 16, comprising increasing the co-residence time to at least 7 seconds. ### Claim 18 (depends on 17) The method of claim 17, further comprising changing an area of the contact surface between the melts during the co-residence time in the die. ### Claim 19 (depends on 18) The method of claim 18, comprising increasing the area of the contact surface between the melts during the co-residence time in the die by from 5% to 300% of the initial contact surface area. ### Claim 20 A laminate, comprising: a film of a dynamically vulcanized alloy and a layer of an adhesive composition; wherein the dynamically vulcanized alloy comprises a thermoplastic elastomer composition containing a thermoplastic resin as a continuous phase, and a rubber composition dispersed therein, as a dispersed phase; wherein the adhesive composition comprises a partially scorched vulcanizable elastomeric composition; and wherein the laminate is produced according to a process comprising: coextruding a dynamically vulcanized alloy with an adhesive composition through a die to produce the laminate; providing a residence time of the adhesive composition in a molten state to partially scorch the vulcanizable elastomeric composition; and providing a co-residence time in the die of a melt of the dynamically vulcanized alloy in contact at a surface with the melt of the adhesive composition of at least 5 seconds.