Polyurea and polyurethane compositions for golf equipment
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A63B-037/00
A63B-037/12
출원번호
US-0246334
(2011-09-27)
등록번호
US-8674051
(2014-03-18)
발명자
/ 주소
Wu, Shenshen
Bulpett, David A.
Rajagopalan, Murali
출원인 / 주소
Acushnet Company
대리인 / 주소
Smith, Gambrell & Russell, LLP
인용정보
피인용 횟수 :
0인용 특허 :
170
초록▼
Golf equipment having improved cut and shear resistance that includes a polyurea composition, preferably saturated and/or water resistant, formed of a polyurea prepolymer and a curing agent, wherein the polyurea prepolymer includes an isocyanate and an amine-terminated compound, and wherein the curi
Golf equipment having improved cut and shear resistance that includes a polyurea composition, preferably saturated and/or water resistant, formed of a polyurea prepolymer and a curing agent, wherein the polyurea prepolymer includes an isocyanate and an amine-terminated compound, and wherein the curing agent includes a hydroxy-terminated curing agent, amine-terminated curing agent, or a mixture thereof.
대표청구항▼
1. A golf ball comprising a core and a cover, wherein the cover is formed from a prepolymer and an amine-terminated curing agent, wherein the prepolymer consists essentially of: an isocyanate; andan amine-terminated compound selected from the group consisting of: and mixtures thereof, wherein x, y,
1. A golf ball comprising a core and a cover, wherein the cover is formed from a prepolymer and an amine-terminated curing agent, wherein the prepolymer consists essentially of: an isocyanate; andan amine-terminated compound selected from the group consisting of: and mixtures thereof, wherein x, y, and z are about 1 or greater, wherein R comprises alkyl groups having about 1 to about 20 carbon atoms, phenyl groups, cyclic groups, or mixtures thereof, wherein R1 and R2 comprise alkylene groups having about 1 to about 20 carbon atoms, phenylene groups, cyclic groups, or mixtures thereof, and wherein R3 comprises a hydrogen, a methyl group, or a mixture thereof. 2. The golf ball of claim 1, wherein the amine-terminated curing agent is selected from the group consisting of ethylene diamine; hexamethylene diamine; 1-methyl-2,6-cyclohexyl diamine; 2,2,4- and 2,4,4-trimethyl-1,6-hexanediamine; 4,4′-bis-(sec-butylamino)-dicyclohexylmethane; N,N′-diisopropyl-isophorone diamine; 1,4-bis-(sec-butylamino)-cyclohexane; 1,2-bis-(sec-butylamino)-cyclohexane; derivatives of 4,4′-bis-(sec-butylamino)-dicyclohexylmethane; 4,4′-dicyclohexylmethane diamine; 1,4-cyclohexane-bis-(methylamine); 1,3-cyclohexane-bis-(methylamine); diethylene glycol bis-(aminopropyl)ether; 2-methylpentamethylene-diamine; diaminocyclohexane; diethylene triamine; triethylene tetramine; tetraethylene pentamine; propylene diamine; 1,3-diaminopropane; dimethylamino propylamine; diethylamino propylamine; imido-bis-(propylamine); monoethanolamine, diethanolamine; triethanolamine; monoisopropanolamine, diisopropanolamine; isophoronediamine; polyoxypropylene diamine; propylene oxide-based triamine; 3,3′-dimethyl-4,4′-diaminocyclohexylmethane; and mixtures thereof. 3. The golf ball of claim 1, wherein the amine-terminated curing agent is a secondary diamine curing agent. 4. The golf ball of claim 1, wherein the cover has a difference in yellowness index of about 12 or less after 5 days of ultraviolet light exposure. 5. The golf ball of claim 1, wherein the cover has a difference in b chroma dimension of about 6 or less after 5 days of ultraviolet light exposure. 6. The golf ball of claim 1, wherein the composition further comprises at least one density-adjusting filler. 7. The golf ball of claim 1, wherein the cover has a thickness of about 0.02 inches to about 0.035 inches. 8. The golf ball of claim 1, further comprising a layer disposed about the core to form an inner ball, wherein the layer has a first Shore D hardness and the cover has a second Shore D hardness, and wherein the ratio of second Shore D hardness to the first Shore D hardness is about 0.7 or less. 9. The golf ball of claim 1, wherein the core has a diameter of about 1.55 or greater. 10. The golf ball of claim 8, wherein the layer comprises at least one thermoplastic or thermoset non-ionomeric material. 11. The golf ball of claim 8, wherein the inner ball further comprises a moisture barrier layer. 12. The golf ball of claim 8, wherein the inner ball is surface treated. 13. The golf ball of claim 8, wherein the intermediate layer comprises an ionomeric material. 14. A golf ball comprising a core and a cover, wherein the cover is formed from a polyurea composition comprising a prepolymer and an amine-terminated curing agent, wherein the prepolymer consists essentially of: an isocyanate; andan amine-terminated compound selected from the group consisting of: and mixtures thereof, wherein x, y, and z are about 1 or greater, wherein R comprises alkyl groups having about 1 to about 20 carbon atoms, phenyl groups, cyclic groups, or mixtures thereof, wherein R1 and R2 comprise alkylene groups having about 1 to about 20 carbon atoms, phenylene groups, cyclic groups, or mixtures thereof, and wherein R3 comprises a hydrogen, a methyl group, or a mixture thereof. 15. The golf ball of claim 14, wherein the cover has a hardness of about 30 Shore D to about 60 Shore D. 16. The golf ball of claim 14, wherein the golf ball comprises at least one layer disposed between the core and the cover. 17. The golf ball of claim 14, wherein the at least one layer comprises a thermoplastic material. 18. The golf ball of claim 17, wherein the at least one layer is surface treated.
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