1. A radiation curable adhesive composition comprising
a) 30 to 90 parts by weight silicone polymer
b) 10 to 70 parts by weight silicate tackifier
c) 0.1 to 5 parts by weight halomethyl-1,3,5-triazine.
2. The radiation curable composition of claim 1 wherein the halomethyl-1,3,5-triazine is of the formula:
wherein
A is a mono-, di-, or trihalomethyl,
B is A, \u2014N(R1)2, \u2014OR1, R1, L-Rsensitizer or L-RPI, where R1 is alkyl or aryl;
Z is a conjugated chromophore, L-Rsensitizer or L-RPI,
L is a covalent bond or a (hetero)hydrocarbyl linking group;
where Rsensitizer is a sensitizer moiety capable of absorbing actinic radiation, and
RPI is a photoinitiator moiety that is capable of initiating free radical or ionic chain polymerization upon exposure to actinic radiation.
3. The radiation curable composition of claim 2 wherein A and B are trichloromethyl.
4. The radiation curable composition of claim 2 wherein Z is an aryl group.
5. The radiation curable composition of claim 4 wherein Z is
wherein
each R8 is independently H, alkyl, or alkoxy and 1-3 of said R8 groups are H.
6. The radiation curable composition of claim 2 wherein Z is
where each R9 is independently H, alkyl, or alkoxy.
7. The radiation curable composition of claim 2 wherein Z is L-Rsensitizer, wherein
L represents a (hetero)hydrocarbyl group linking the sensitizer moiety to the triazine nucleus, provided that the chromophore of said triazine nucleus is not attached to the chromophore of said Rsensitizer sensitizer moiety either directly by a covalent bond or by a conjugated linkage;
Rsensitizer represents a cyanine group, a carbocyanine group, a styryl group, an acridine group, a polycyclic aromatic hydrocarbon group, a polyarylamine group, or an amino-substituted chalcone group.
8. The radiation curable composition of claim 2 wherein Z is L-RPI, wherein
L represents a (hetero)hydrocarbyl group linking the sensitizer moiety to the triazine nucleus,
RPI represents a hydrogen-abstraction type photoinitiator group.
9. The radiation curable composition of claim 1 wherein the silicone is of the formula:
wherein
R3 is each independently an alkyl, aryl or alkoxy group;
R4 is H, an alkyl, aryl, alkoxy group, or a functional group including epoxy, amine, hydroxy groups, or \u2014Si(R3)2R5;
R5 is H, an alkyl, aryl, alkoxy group, or a functional group including epoxy, amine, hydroxy groups, or \u2014Si(R3)2R5;
R6 is H, an alkyl, aryl, alkoxy group, or a functional group including epoxy, amine, hydroxy groups, or \u2014Si(R3)2R5;
y is 0 to 20; preferably 1-75; and
x is at least 10.
10. The radiation curable composition of claim 1 wherein the silicone is a poly(dialkylsiloxane).
11. The radiation curable composition of claim 1 wherein the silicone is a hydroxy-terminated poly(dialkylsiloxane).
12. The radiation curable composition of claim 1 wherein the silicone is an amine-terminated poly(dialkylsiloxane).
13. The radiation curable composition of claim 1 wherein the silicone has a kinematic viscosity of 30,000 to 20\xd7106 centistokes.
14. The radiation curable composition of claim 1, wherein the halomethyl-1,3,5-triazine is of the formula:
wherein each R8 is independently hydrogen, alkyl, or alkoxy; and 1-3 of the R8 groups are hydrogen.
15. The radiation curable composition of claim 1, wherein the halomethyl-1,3,5-triazine is of the formula:
wherein each R9 is independently hydrogen, alkyl, or alkoxy.
16. The radiation curable composition of claim 7, wherein the halomethyl-1,3,5-triazine is of the formula:
wherein
A is a mono-, di-, or trihalomethyl,
B is A, \u2014N(R1)2, \u2014OR1, R1, L-Rsensitizer or L-RPI, where R1 is alkyl or aryl;
L is a covalent bond or a (hetero)hydrocarbyl linking group, and
Rsensitizer is a sensitizer group, and
L represents a hetero)hydrocarbyl group linking the sensitizer moiety to the triazine ring.
17. The radiation curable composition of claim 1 wherein the silicone is of the formula:
wherein
each R7 is independently an alkyl, alkoxy, aryl, or functional groups, with the proviso that at least one R7 group is a functional group, and z is at least 10.
18. The radiation curable composition of claim 17 wherein at least one of the R7 groups are selected from the group consisting of a hydride group, an amine group, a hydroxy group, and an epoxy group and the remaining R7 groups are non-functional groups.
19. The radiation curable composition of claim 1 wherein said silicone is a poly(dialkylsiloxane).
20. The radiation curable composition of claim 17 wherein the silicone is selected from:
21. A cured adhesive coating comprising the radiation curable composition of claim 1 on a substrate.
22. The cured adhesive coating of claim 21 having a modulus less than 3\xd7106 dynescm at a frequency of 1 Hz.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of molding a golf ball core, the method comprising the steps of:
providing a continuous motion conveyor system;
providing a top mold half and a bottom mold half, each integral with and in continual motion with the conveyor system;
heating each mold half in a separate conveyor oven;
providing a heated prep and placing the prep into the bottom mold half;
assembling the mold halves together with the prep to form a single cavity mold;
compressing the prep by utilizing spring force and retainer plates of the single cavity mold to form a spherical golf ball core;
curing the core in a conveyor convection oven; and
disassembling the mold and automatically removing the cured core.
2. The method according to claim 1, wherein the heating in the conveyor oven is to a temperature of 350\xb0 F.
3. The method according to claim 1, wherein the curing in the convection oven is to a temperature of about 350\xb0 F.
4. The method according to claim 1, wherein the spring force compression in each single cell cavity mold is about 384 pounds.
5. The method according to claim 1, wherein the conveyor moves at a speed of about 200 cavity molds per minute.
6. The method according to claim 1, wherein the prep is prepared by mixing a thermoset polybutadiene, a trans-polyisoprene and a modified, non-ionic polyolefin compatible with the thermoset rubber materials.
7. The method according to claim 6, wherein the non-ionic polyolefin is a copolymer ethylene and an alkyl acrylate.
8. A method of using a single cavity mold to mold a golf ball core, the method comprising the steps of:
providing a continuous motion conveyor system;
providing the single cavity mold having a top mold half and a bottom mold half, each integral with and in continual motion with the conveyor system;
heating each mold half in a separate conveyor oven;
providing a heated prep and placing the prep into the bottom mold half;
assembling the mold halves together to form a single cavity mold containing the prep;
compressing the prep by utilizing spring force and retainer plates of the single cavity mold to form a spherical golf ball core;
curing the core in a conveyor convection oven; and
disassembling the mold and automatically removing the cured core.
9. The method according to claim 8, wherein the heating in the conveyor oven is to a temperature of 350\xb0 F.
10. The method according to claim 8, wherein the curing in the convection oven is to a temperature of about 350\xb0 F.
11. The method according to claim 8, wherein the spring force compression in each single cell cavity mold is about 384 pounds.