Conveyor track or container lubricant compositions
View Patent ↗Conveyor track lubricant composition and methods comprising use of siloxane oil and a spreading agent, such as a trisiloxane spreading agent. The lubricant compositions may also contain biocide materials and stress crack resistance materials.
1. A method of lubricating a conveyor track or container comprising applying a composition comprising a silicone lubricating oil and a spreading agent, said composition having a spreading ratio of at least 4 on polybutene compared to water;
wherein said spreading agent is of the formula (II):
wherein Q is C d H 2d O[(C 2 H 4 O) t (C 3 H 6 O) w )]R 2 ,d is 1-5, t is 0-25, w is 0-25, t+w=1-50; R 2 is hydrogen, hydroxyl, C 1 to C 4 alkyl, amine, or acetyl;
wherein each R is independently Q, hydrogen, hydroxyl, or C 1 to C 4 alkyl; and
wherein R 1 is C 1 to C 3 alkyl.
2. The method of claim 1 , wherein said spreading agent is a trisiloxane alkoxylate.
3. The method of claim 1 , wherein said spreading agent is an alkyleneoxide modified heptamethyl trisiloxane.
4. The method of claim 1 , wherein d is 2 or 3, t is 0-10, w is 0-10, t+w=1-10; R 2 is hydrogen or C 1 to C 4 alkyl; and each R is independently hydrogen or C 1 to C 4 alkyl.
5. The method of claim 4 wherein t is 3 or 4, w is 0; R 2 is hydrogen or methyl; every R is methyl; and R 1 is methyl.
6. The method of claim 1 , wherein said silicone lubricating oil is water-miscible or water dispersible.
7. The method of claim 6 wherein said silicone lubricating oil is polydimethylsiloxane oil.
8. The method of claim 7 wherein said composition comprises 1 part by weight of said polydimethylsiloxane oil, and from 0.05 to 100 parts by weight of said spreading agent, and optionally, from 0 to 96 parts by weight water.
9. The method of claim 6 wherein the composition additionally comprises an effective amount of a biocide.
10. The method of claim 9 wherein said biocide comprises a methylated isothiazolone compound.
11. The method of claim 6 wherein the composition additionally comprises sodium cumene sulfate in an amount effective to improve environmental stress crack resistance to poly(ethyleneterephthalate) beverage containers.
12. The method of claim 6 wherein said silicone oil comprises 0.0005 to 50% by weight of the total composition.
13. The method of claim 12 wherein said silicone oil comprises 0.0005 to 0.2% by weight of the total composition.
14. The method of claim 6 wherein said composition comprises 0.0005 to 50% by weight of said spreading agent.
15. The method of claim 12 wherein said composition comprises 0.0005 to 0.2% by weight of said spreading agent.
16. The method of claim 5 wherein said composition comprises the following:
Trisiloxane ethoxylate
4.5 to 5.5
pts/wt
Polydimethyl siloxane lubricating emulsion
1.0 to 1.5
pts/wt
methyl-4-isothiazolin-3-one
0.2 to 0.8
pts/wt
Deionized water
94.3 to 92.2
pts/wt.
17. The method of claim 5 wherein said composition comprises the following:
Trisiloxane ethoxylate
3 to 4
pts/wt
Polydimethylsiloxane lubricating oil emulsion
1 to 1.5
pts/wt
Silicone surfactant stabilizer
1.5 to 2.5
pts/wt
1,2 benzisothiazolin-3-one
0.2 to 0.8
pts/wt
Sodium cumene sulfate
15 to 25
pts/wt
Phosphonate chelating agent
0.05 to 0.1
pts/wt
Deionized water
79.25 to 66.1
pts/wt.
18. A method of lubricating a conveyor track or container comprising applying a composition comprising a silicone lubricating oil and a spreading agent, said composition having a spreading ratio of at least 4 on polybutene compared to water, wherein said silicone oil is 0.0005 to 0.2% by weight of the total composition, wherein said silicone lubricating oil is polydimethylsiloxane oil, and said spreading agent is of the formula (II):
wherein Q is C d H 2d O[(C 2 H 4 O) t (C 3 H 6 O) w )]R 2 , d is 1-5, t is 0-25, w is 0-25, t+w=1-50; R 2 is hydrogen, hydroxyl, C 1 to C 4 alkyl, amine, or acetyl;
wherein each R is independently Q, hydrogen, hydroxyl, or C 1 to C 4 alkyl; and
wherein R 1 is C 1 to C 3 alkyl.
19. A method of lubricating a conveyor track or container comprising applying a composition comprising a silicone lubricating oil and a spreading agent, said composition having a spreading ratio of at least 4 on polybutene compared to water, wherein said spreading agent is 0.0005 to 0.2% by weight of the total composition, wherein said silicone lubricating oil is polydimethylsiloxane oil, and said spreading agent is of the formula (II):
wherein Q is C d H 2d O[(C 2 H 4 O) t (C 3 H 6 O) w )]R 2 , d is 1-5, t is 0-25, w is 0-25, t+w=1-50; R 2 is hydrogen, hydroxyl, C 1 to C 4 alkyl, amine, or acetyl;
wherein each R is independently Q, hydrogen, hydroxyl, or C 1 to C 4 alkyl; and
wherein R 1 is C 1 to C 3 alkyl.