Non-aqueous composite gel and process for production thereof
AssigneeNitto Electric Industrial Co., Ltd.
InventorsYoshikazu Musa, Isao Mune
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Abstract
A non-aqueous composite gel and a process for the production thereof are described, said gel containing emulsified high boiling point hydrophilic liquid particles, said non-aqueous composite gel consisting of an O/O emulsion comprising from 15 to 99% by weight of a continuous phase composed of a rubber component and an oil component, and from 85 to 1% by weight of a dispersed phase composed of a high boiling point hydrophilic liquid wherein the rubber component is cross-linked. This non-aqueous composite gel can be used, for example, as a heat insulating material, especially to maintain low or high temperature environments, as a heat retaining material and as a hospital mat.
Claims22
A substantially stable non-aqueous composite gel containing emulsified high boiling point hydrophilic liquid particles, said composite gel consisting of an O/O emulsion comprising
- from 15 to 99% by weight of a continuous phase composed of a cross-linked rubber component and an oil component, said rubber component being derived from rubber containing an unsaturated double bond or bonds in the molecules thereof, and
- from 85 to 1% by weight of a dispersed phase composed of a high boiling point hydrophilic liquid uniformly emulsified in the continuous phase by an emulsifier.
A process for producing a non-aqueous composite gel containing emulsified high boiling point hydrophilic liquid particles, said process comprising
- dissolving a rubber component containing an unsaturated double bond or bonds in the molecules thereof in an excess amount of an oil component to form a solution,
- adding a cross-linking agent at a temperature below the decomposition temperature thereof and an emulsifier to the solution,
- uniformly emulsifying a high boiling point hydrophilic liquid in the resulting solution to form an O/O emulsion comprising from 15 to 99% by weight of a continuous phase composed of the rubber component and the oil component and from 85 to 1% by weight of a dispersed phase of the emulsified high boiling point hydrophilic liquid, and
- cross-linking the rubber component to achieve the gelation thereof.
Dependencies are inferred from the claim text.