润滑科技信息平台

专利摘要

一种制备减摩涂料组合物的方法,包括以下步骤:(A)将(i)固体润滑剂、(ii)溶剂、(iii)粘合剂和(iv)任选的添加剂混合; (B)用篮式研磨机研磨溶剂(ii)中的(i)固体润滑剂足够的时间以形成研磨的(i)固体润滑剂在(ii)溶剂中的分散体,并且其中粘合剂(iii) 任选的添加剂(iv)各自独立地在(B)之前、期间、之后或之前、期间和之后中的两种或更多种的组合与固体润滑剂(i)和溶剂(ii)组合。 ......

基本信息

专利类型:
发明专利
申请/专利号:
IN202447027814
申请日期:
2024-04-04
专利申请人:
分类号:
C10M
发明/设计人:
OSICHOW, ANNA | BARTH, MARITA | BUSCH, JOCHEN
权利要求: That which is claimed is:1. A method of making an antifriction coating composition, comprising the steps of:(A) combining(i) a solid lubricant,(ii) a solvent,(iii) a binder, and(iv) optionally, an additive; and(B) grinding the (i) solid lubricant in the solvent (ii) with a basket mill for sufficient time to form a dispersion of the ground (i) solid lubricant in the (ii) solvent, and wherein the binder (iii) and the optional additive (iv) are each independently combined with the solid lubricant (i) and solvent (ii) before, during, after, or a combination of two or more of before, during, and after, (B).2. The method according to claim 1, wherein the binder (iii) is combined with the solid lubricant (i) and the solvent (ii) before or during (B).3. The method according to claim 1, wherein the binder (iii) is combined with the solid lubricant (i) and the solvent (ii) after grinding the combination of (i) and (ii) in B.4. The method according to one of claims 2 or 3, further comprising: combining the binder (iii) with a second solvent (v) to form a mixture and combining the mixture with the solid lubricant (i) and the solvent (ii).5. The method according to claim 1, wherein the grinding is done in a single step.6. The method according to claim 1, further comprising (C) forming a pre-dispersion of the binder, the solid lubricant, the solvent, and the optional additives using a dissolver disc, then (D) conducting the grinding (B) of the pre-dispersion in the same container that the predispersion was formed.7. The method according to claim 6, wherein the basket mill comprises a container and an agitator basket, wherein the agitator basket comprises beads and a bead agitator, a dissolver disc, and a drive shaft, wherein the bead agitator and the dissolver disc, are engaged with the drive shaft.8. The method according to any one of the preceding claims, wherein the dispersion is low viscosity, alternatively has a viscosity from 20 mPa s to 2500 mPa s.9. The method according to any one of the preceding claims, further comprising modifying the grinding time to vary the average particle size and the particle size distribution of the solid lubricant.10. The method according to any of the preceding claims, wherein the ground solid lubricant has a particle size (d90) of up to 75 pm and (d50) of up to 25 pm.11 . The method according to any of the preceding claims, wherein the beads comprise ZrC>2, metal, glass, or a combination of ZrC>2, metal, and glass, and the beads are from 0.6 to 2.5 mm in diameter.12. The method according to any of the preceding claims, wherein the binder is a phenolic resin, epoxy resin, a silicone resin, or a mixture two or more of a phenolic resin, epoxy resin, and a silicone resin.13. The method according to any of the preceding claims, wherein the solid lubricant is graphite, M0S2, PTFE, silicone, wax, a solid hydrocarbon wax, or a mixture of two or more of graphite, M0S2, PTFE, silicone, wax, and a solid hydrocarbon wax.14. The method according to any one of the preceding claims, wherein the solvent is water, an alcohol comprising 1 to 4 carbon atoms, a ketone comprising 3 to 6 carbon atoms, an ester, a heterocyclic, an aliphatic or an aromatic compound.15. The method according to any one of the preceding claims, wherein the dispersion further comprises a pigment.16. The antifriction coating composition prepared by the method of any one of the preceding claims.17. An antifriction coating, wherein the antifriction coating is prepared by making a film of the antifriction coating composition according to claim 13 on a substrate and subjecting the antifriction coating composition to conditions to remove the solvent and form the antifriction coating.18. An antifriction coating composition, comprising:A dispersion of(i) a solid lubricant;(ii) a solvent,(iii) a binder, and(iv) optionally, an additive, wherein the solid lubricant has a particle size (d90) up to 75 pm and (d50) of up to 50 pm.19. The antifriction coating composition according to claim 18, wherein the particle size (d90) is from 20 to 30 pm and (d50) from 7 to 9 pm for the solid particles in the dispersion.20. A method of making an antifriction coating, comprising the steps of: applying the antifriction coating composition prepared according to any one of claims 1 to 12 to a substrate and subjecting the applied antifriction coating composition to conditions to remove the solvent.21. The method of making an antifriction coating according to claim 20, wherein the antifriction coating is applied to the substrate by brushing, dipping, spinning, dip-spinning, or spraying.22. The method of making an antifriction coating according to claim 20 or 21 , further comprising curing the antifriction coating composition to form the antifriction coating.23. The antifriction coating composition according to any one of claims 18-22, wherein the antifriction coating composition is prepared according to the method according to any one of claims 1-15.24. A part, comprising a sliding member coated with the antifriction coating composition according to any one of claims 18-23.25. The part according to claim 24, wherein the antifriction coating composition is cured to form an antifriction coating.