RUBBER COMPOSITION FOR GOLF BALL
    22.
    发明公开

    公开(公告)号:US20240182690A1

    公开(公告)日:2024-06-06

    申请号:US18512968

    申请日:2023-11-17

    Inventor: Jun SHINDO

    Abstract: A rubber composition for golf balls is provided which, when the hardness difference in the internal hardness profile of a golf ball core made of the composition is set to a large value, enables the ball to exhibit low spin characteristics when hit, improving the flight performance of the ball, and also enhances the ball durability to cracking. The rubber composition includes (a) a base rubber, (b) a co-crosslinking agent that is an α,⊕-unsaturated carboxylic acid and/or a metal salt thereof, (c) an organic peroxide and (d) water, component (d) being included in an amount of from 0.1 to 10 parts by weight per 100 parts by weight of component (a), and components (b) and (c) being included in relative amounts such that E, defined by the formula


    E=molar amount of component (b)/molar amount of active oxygens in component (c),

    has a value of 93 or more.

    HYDROGEL COMPOSITION
    30.
    发明公开

    公开(公告)号:US20240141144A1

    公开(公告)日:2024-05-02

    申请号:US18301376

    申请日:2023-04-17

    CPC classification number: C08L1/10 C08K3/16 C08K5/053 C08K5/19 C08K2201/014

    Abstract: Disclosed herein is a hydrogel composition that includes a crosslinked collagen polymer, a carboxymethyl cellulose derivative, an aqueous sodium chloride solution, a humectant, and an antimicrobial agent. The crosslinked collagen polymer has collagen, a hydrophilic polyether, and a dicarbamate group linking the collagen to the hydrophilic polyether. The carboxymethyl cellulose derivative is selected from the group consisting of carboxymethyl cellulose, an alkali metal salt of carboxymethyl cellulose, an ammonium salt of carboxymethyl cellulose, and combinations thereof. The humectant is selected from the group consisting of glycerin, propylene glycol, and a combination thereof. The antimicrobial agent is a combination of glycine betaine and polyhexamethylene biguanide hydrochloride.

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