Ionomer Resin Golf Ball Interlayer for Low Spin and Long Flight
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Solution Overview
Problem
Existing golf ball interlayers face challenges in achieving high resilience while maintaining soft compression and low spin on driver shots, which affects flight distance.
Innovation Solution
A resin composition using a metal ion-neutralized copolymer of C3-8 α,β-unsaturated carboxylic acid and C3-8 α,β-unsaturated carboxylic acid ester, with a specific mass ratio and degree of neutralization, is used for the interlayer, providing high resilience and low spin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If high rigid or high elastic interlayer materials are used, then flight distance is improved through high launch angle and low spin, but compression softness deteriorates
Solution Approach 1:
The invention changes the chemical composition parameters of the ionomer resin by controlling the mass ratio of acrylic acid to acrylic acid ester between 10/90 and 25/75, and the degree of neutralization between 30 and 105 mol%, to achieve optimal balance between elasticity and compression softness
Solution Approach 2:
The invention uses a composite resin composition containing ionomer resin combined with other polymers (polyester resin, polyamide resin, or polyurethane resin) to achieve synergistic effects that provide both high elasticity for flight distance and appropriate compression softness
2Object-generated harmful factors
If high rigid interlayer materials are used, then low spin on driver shots is achieved, but resilience deteriorates
Solution Approach 1:
The invention optimizes the degree of neutralization of the ionomer resin within 30-105 mol% to achieve the right balance between material hardness for low spin and elasticity for high resilience
Solution Approach 2:
The invention creates different hardness characteristics in different parts of the golf ball structure by using the ionomer resin interlayer with specific composition, achieving soft compression at impact while maintaining firmness for spin control
Data Source
AI summary
The present invention provides a resin composition for a golf ball and a golf ball which have high resilience while maintaining soft compression and also have low spin on driver shots, and therefore can achieve a long flight distance. The present invention relates to a resin composition for a golf ball, including an ionomer resin consisting of a metal ion-neutralized copolymer of (A) a C3-8 α,β-unsaturated carboxylic acid and (B) a C3-8 α,β-unsaturated carboxylic acid ester, the ionomer resin having a mass ratio of (A)/(B) of 10/90 to 25/75, and a degree of neutralization of 30 to 105 mol %.