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    METHODS FOR APPLYING POLYURETHANE COATINGS TO GOLF BALLS HAVING A THERMOPLASTIC POLYURETHANE COVER
    43.
    发明申请
    METHODS FOR APPLYING POLYURETHANE COATINGS TO GOLF BALLS HAVING A THERMOPLASTIC POLYURETHANE COVER 审中-公开

    公开(公告)号：US20190083850A1

    公开(公告)日：2019-03-21

    申请号：US15710866

    申请日：2017-09-21

    Applicant: Acushnet Company

    Inventor： Michael J. Sullivan ,  Mark L. Binette

    IPC: A63B37/00 ,  A63B45/00 ,  B05D1/02 ,  B32B27/40

    Abstract: Golf balls having covers made of thermoplastic polyurethane compositions are provided. Multi-piece golf balls can be made. Polyurethane primer coatings and polyurethane top-coatings are applied to the thermoplastic polyurethane cover. Different coating methods can be used. Isocyanate-rich and polyol-rich polyurethane coatings can be applied. In one embodiment, the golf ball can be treated with a multi-functional isocyanate prior to applying the coatings. The polyurethane cover composition and surface coatings can further include catalysts, ultraviolet (UV)-light stabilizers, and other additives. Heat is used to cure the coatings. The coating methods have many benefits and the finished balls have good physical properties.

    Golf Balls Having Dual-Layered Cores With Metal-Containing Centers and Thermoset Outer Cores
    45.
    发明申请
    Golf Balls Having Dual-Layered Cores With Metal-Containing Centers and Thermoset Outer Cores 审中-公开

    公开(公告)号：US20190054350A1

    公开(公告)日：2019-02-21

    申请号：US16166307

    申请日：2018-10-22

    Applicant: Acushnet Company

    Inventor： Michael J. Sullivan ,  Mark L. Binette

    IPC: A63B37/00

    Abstract: Multi-piece golf balls containing a dual-core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity and a surrounding outer core layer having a relatively low specific gravity. The core structure may have different hardness gradients. In one preferred embodiment, the inner core and outer core each has a positive hardness gradient. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof. The outer core layer preferably is formed from a thermoset composition such as polybutadiene rubber. The resulting ball has high resiliency and good spin control.

    Golf balls having metal-containing plasticized thermoplastic inner cores and thermoplastic outer cores
    49.
    发明授权
    Golf balls having metal-containing plasticized thermoplastic inner cores and thermoplastic outer cores 有权

    公开(公告)号：US10150010B2

    公开(公告)日：2018-12-11

    申请号：US15387922

    申请日：2016-12-22

    Applicant: Acushnet Company

    Inventor： Michael J. Sullivan ,  Mark L. Binette

    IPC: A63B37/04 ,  A63B37/06 ,  A63B37/00

    Abstract: Multi-piece golf balls containing a dual-layered core structure are provided. The core structure includes a small, heavy inner core (center) having a relatively high specific gravity, and a surrounding outer core layer. The layers of the core structure may have different hardness gradients. The center of the core comprises a metal material such as copper, steel, brass, tungsten, titanium, aluminum, and alloys thereof preferably dispersed in a plasticized thermoplastic polymeric matrix. Different plasticizer such as fatty acid esters may be used. The outer core layer also is preferably formed from a thermoplastic composition such as an ethylene acid copolymer ionomer resin. The resulting ball has high resiliency and good spin.

    Golf ball multilayer core having a gradient quotient
    50.
    发明授权
    Golf ball multilayer core having a gradient quotient 有权

    公开(公告)号：US10130848B2

    公开(公告)日：2018-11-20

    申请号：US15391897

    申请日：2016-12-28

    Applicant: Acushnet Company

    Inventor： Michael J. Sullivan ,  Mark L. Binette ,  Brian Comeau

    IPC: A63B37/06 ,  A63B37/00

    Abstract: A golf ball including a dual core comprising an inner core having a first outer surface, a geometric center, and a soft transition region adjacent to the outer surface, and an outer core layer having a second outer surface disposed about the inner core. An inner cover layer and an outer cover layer are formed over the core. The second outer surface is greater than the first outer surface to define a dual core overall positive hardness gradient of about 25 Shore C to 35 Shore C and has a secondary gradient quotient, GQ′, defined by the equation: 6 ≤ G ′ + T 10 × COR ≤ 7 where G′ is the overall positive hardness gradient in Shore C, T is the percent of trans-polybutadiene isomer at the core outer surface, and COR is the coefficient of restitution measured at an incoming velocity of 125 ft/s.

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