Methods of vulcanizing elastomers using tall oil heads
AssigneeArizona Chemical Company
InventorsClaude F. Phillips, Jr., Alexander J. Conte
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Abstract
Tall oil heads may be used in lieu of, or in combination with, conventional fatty acids in the compounding and curing of vulcanizable rubber. Tall oil heads inherently contain a significant amount of neutral materials, and their incorporation into a pre-vulcanized rubber composition allows the compounder to incorporate less aromatic oil into the composition. The composition may be made by a method comprising compounding a mixture comprising a vulcanizable elastomer, a sulfur source, and Tall Oil Heads (TOH), the TOH comprising 40-75 wt % fatty acids and greater than 10 wt % neutral materials, and heating the compounded mixture to a temperature sufficient to cause substantial crosslinking of the elastomer.
Claims23
A method for making a cross-linked elastomer which comprises compounding a mixture comprising a vulcanizable elastomer, a sulfur source, and Tall Oil Heads (TOH), the TOH comprising 40 to just under 90 wt % fatty acids and greater than 10 wt % unsaponifiable materials, wherein said TOH comprises palmitic acid as the predominant fatty acid and heating the compounded mixture to a temperature sufficient to cause substantial crosslinking of the elastomer.
A method for making a cross-linked elastomer which comprises compounding a mixture comprising a vulcanizable elastomer, a sulfur source, and from about 0.1 to about 6.0% by weight of Tall Oil Heads (TOH), and heating the compounded mixture to a temperature sufficient to cause substantial crosslinking of the elastomer wherein said TOH comprises palmitic acid as the predominant fatty acid.
A method of enhancing the cure of a sulfur vulcanizable elastomer selected from the group consisting of natural rubber, synthetic rubber or mixture thereof which comprises adding Tall Oil Heads (TOH) to a sulfur vulcanizable elastomer to provide an admixture, and heating the admixture to a temperature sufficient to achieve vulcanization, wherein said TOH comprises palmitic acid as the predominant fatty acid.
A method of enhancing the cure of a sulfur vulcanizable elastomer selected from the group consisting of natural rubber, synthetic rubber or mixture thereof which comprises adding a distillation fraction of Tall Oil Heads (TOH) to a sulfur vulcanizable elastomer to provide an admixture, and heating the admixture to a temperature sufficient to achieve vulcanization, wherein the distillation fraction comprises at least 50 wt % palmitic acid.
A compounded mixture for preparing a cross-linked elastomer, the mixture comprising a vulcanizable elastomer, a sulfur source, and Tall Oil Heads (TOH), the TOH comprising unsaponifiables and fatty acids where the weight of the unsaponifiable fraction exceeds 10% based on the total weight of the TOH, and wherein said TOH comprises palmitic acid as the predominant fatty acid.
A compounded mixture for preparing a cross-linked elastomer, the mixture comprising a vulcanizable elastomer, a sulfur source, and a distillation fraction from Tall Oil Heads (TOH), the TOH comprising unsaponifiables and fatty acids where the weight of the unsaponifiable fraction exceeds 10% based on the total weight of the TOH, and wherein said TOH comprises palmitic acid as the predominant fatty acid.
Dependencies are inferred from the claim text.