# US 2017/0282018 A1 · Golf ball with excellent interlayer adhesion between adjacent differing layers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0282018 A1 - Document ID: US20170282018A1 - Status: Published application - Kind: A1 - Application number: 15/626,343 - Filed: 2017-06-19 - Published: 2017-10-05 - Earliest claimed: 2015-11-17 - Assignees: Acushnet Company - Applicants: Acushnet Company - Inventors: Mark L. Binette; Brian Comeau; Michael Michalewich; Shawn Ricci - Web page: https://patentgrep.com/patent/US20170282018A1 ## CPC - A63B 37/0075: {Three piece balls, i.e. cover, intermediate layer and core} - A63B 45/00: Apparatus or methods for manufacturing balls (working of plastics or substances in a plastic state B29) - B29C 67/24: characterised by the choice of material - A63B 37/0076: {Multi-piece balls, i.e. having two or more intermediate layers} - B29C 67/246: {Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM] (casting monomers B29C39/006, mixing construction B29B7/74)} - B29K 2075/00: Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material - B29K 2105/0005: {containing compounding ingredients (releasing, lubricating or separating agents B29C33/56, fibers B29K2105/08, B29K2105/12; fillers B29K2105/16, recycled material B29K2105/26)} - B29L 2031/546: {Golf balls} - C08L 83/00: Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - 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) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Golf ball and method for making it, comprising a first layer that comprises a first polymeric composition and is surrounded by and adjacent to a second layer comprising a second polymeric composition different than the first polymeric composition; with one of these layers further comprising at least one silane-containing adhesion promoter such as organosilanes and/or organosiloxanes throughout in an amount of from about 0.1 wt. % to about 5.0 wt. % of the entire layer. Neither layer is surface treated with at least one silane-containing adhesion promoter. The second layer may be the layer comprising the silane-containing adhesion promoter throughout, surrounded by a third layer that comprises a third polymeric composition that differs from the second polymeric composition and does not incorporate any silane-containing adhesion promoter. Strong interlayer bonding is therefore created both between the second layer and the first layer and between the second layer and the third layer. ## Claims ### Claim 1 A golf ball comprising a first layer that consists of a thermoset rubber composition and is surrounded by and adjacent to a second layer consisting of an ionomer composition; wherein only the thermoset rubber composition of the first layer comprises at least one silane-containing adhesion promoter throughout and in an amount of from about 0.1 wt. % to about 5.0 wt. %; and wherein the first layer and the second layer are not surface treated with any adhesion promoter at an interface between the first layer and second layer. ### Claim 2 (depends on 1) The golf ball of claim 1, wherein the at least one silane-containing adhesion promoter is selected from the group consisting of organosilanes and organosiloxanes. ### Claim 3 (depends on 1) The golf ball of claim 1, wherein the first layer is an inner core and the second layer is an outer core layer. ### Claim 4 (depends on 1) The golf ball of claim 1, wherein the first layer surrounds an inner core comprising polybutadiene. ### Claim 5 (depends on 1) The golf ball of claim 1, wherein the first layer surrounds an inner core comprising a thermoplastic composition. ### Claim 6 (depends on 1) The golf ball of claim 1, wherein the thermoplastic composition comprises an ionomer. ### Claim 7 (depends on 1) The golf ball of claim 1, wherein the at least one silane-containing adhesion promoter has at least two functional groups. ### Claim 8 (depends on 1) The golf ball of claim 1, wherein the second layer is surrounded by and adjacent to a third layer comprising a thermoset polyurethane composition wherein the third layer further comprises at least one silane-containing adhesion promoter throughout and in an amount of from about 0.1 wt. % to about 5.0 wt. %; and wherein the second layer and the third layer are not surface treated with any adhesion promoter at an interface between the second layer and the third layer. ### Claim 9 A golf ball comprising a first layer that consists of a thermoset rubber composition and is surrounded by and adjacent to a second layer consisting of an ionomer composition; wherein only the ionomer composition of the second layer comprises at least one silane-containing adhesion promoter throughout in an amount of from about 0.1 wt. % to about 5.0 wt. %; and wherein the first layer and the second layer are not surface treated with any adhesion promoter at an interface between the first layer and second layer. ### Claim 10 (depends on 9) The golf ball of claim 9, wherein the at least one silane-containing adhesion promoter is selected from the group consisting of organosilanes and organosiloxanes. ### Claim 11 (depends on 9) The golf ball of claim 9, wherein the second layer is surrounded by a third layer comprising a polyurethane composition, wherein the second layer and the third layer are not surface treated with any adhesion promoter at an interface between the second layer and the third layer. ### Claim 12 (depends on 11) The golf ball of claim 11, wherein the polyurethane composition is thermosetting. ### Claim 13 (depends on 11) The golf ball of claim 11, wherein the polyurethane composition is thermoplastic. ### Claim 14 A golf ball comprising a first layer that consists of a thermoset rubber composition and is surrounded by and adjacent to a second layer consisting of a different thermoset rubber composition; wherein only one of the thermoset rubber composition of the first layer and the thermoset rubber composition of the first layer comprises at least one silane-containing adhesion promoter throughout in an amount of from about 0.1 wt. % to about 5.0 wt. %; and wherein the first layer and the second layer are not surface treated with any adhesion promoter at an interface between the first layer and second layer. ### Claim 15 (depends on 14) The golf ball of claim 14, wherein the at least one silane-containing adhesion promoter is selected from the group consisting of organosilanes and organosiloxanes. ### Claim 16 (depends on 14) The golf ball of claim 14, wherein the second layer is surrounded by and adjacent to a third layer comprising an ionomer composition and wherein the third layer is surrounded by a fourth layer comprising thermoset polyurethane composition, wherein the fourth layer further comprises at least one silane-containing adhesion promoter throughout and in an amount of from about 0.1 wt. % to about 5.0 wt. %; and wherein the third layer and the fourth layer are not surface treated with any adhesion promoter at an interface between the second layer and the third layer.