Metal soap incorporated in rubber compositions and method for incorporating such soaps in rubber compositions
一种组合物、金属皂的技术，应用在引入橡胶组合物的金属皂及金属皂引入橡胶组合物领域，能够解决难以保持等问题
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[0032]A generally exemplary method of preparing a rubber composition includes preparing a metal soap by the following method. The polar solvent, base and carboxylic acid are combined and mixed to form solution A. A source of metal ions in solution is added to Solution A and mixed to form Product A. The metal has oxidation state +3 or +4, for example, or in other embodiments, may be a Group III (IUPAC Group 13) metal or a transition metal excluding zinc, nickel and copper. The metal may be selected from the group consisting of aluminum, iron, titanium and cobalt. Product A was isolated from the solution and then combined with the diene rubber composition.
[0033] A more specific exemplary method of making a rubber composition includes synthesizing a metal soap and combining it with a diene rubber. In an exemplary procedure, a polar solvent, a base, and an organic substance containing carboxylic acid groups are mixed together to form solution A. Base is added to neutralize ...
Embodiment 1
[0063] Into a 1.9 L glass bottle was added 2000 ml of water and 40 g (1 mol) of sodium hydroxide (99+% purity from Aldrich). When the sodium hydroxide was completely dissolved, 201 g of lauric acid (99% pure from Aldrich) was added. The mixture was then mixed vigorously at 75°C for 1 hour until the solution was completely clear. This solution is referred to as Solution A.
[0064] In another 1.9L glass bottle was added 2000ml of water and 238g of potassium aluminum sulfate (99+% purity, from Aldrich). The mixture was then mixed vigorously at 75°C for 1 hour until the solution was completely clear. This solution is referred to as Solution B.
[0065] Next, the still hot solutions A and B were combined and vigorously stirred, the combination yielding a gel-like material. In this case, solution B was slowly added to solution A at a rate of 0.38 L / min. The material was washed 8 times with deionized water, then dried under vacuum at 65°C overnight. The final product is a whit...
Embodiment 2
[0067] The procedure in Example 1 was essentially repeated, however with the following changes. In this example, 2000 mL of water and 40 g (1 mol) of sodium hydroxide (99+% purity from Aldrich) were added to a 1.9 L bottle. After the sodium hydroxide was completely dissolved, 144 g of 2-ethylhexanoic acid (99+% purity from Aldrich) was added. The combination of these chemicals constitutes Solution A. Solution B as defined in Example 1 was slowly added to solution A at a rate of 100 mL / min under vigorous stirring and at a temperature of 85°C. Again, this combination resulted in a gel-like material.
[0068] Application of Examples 1 and 2 in Rubber Compositions
[0069] Two control rubber compositions (Control 1 and Control 2) were prepared according to the formulations shown in Tables 1 and 2. Two test compositions (Run 1 and Run 2) were also prepared by using the synthetic materials in Examples 1 and 2 to replace part of the fragrance oil in the compound formulations in...
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