Thermally expandable microcapsule complex, method for manufacturing same, rubber composition in which complex is blended, and pneumatic tire using composition
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsKazushi Kimura, Hirokazu Kageyama, Masaki Sato
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Abstract
In the present technology, a thermally expandable microcapsule complex is blended in a rubber component, the thermally expandable microcapsule complex being obtained by preparing an aqueous solution of a water-soluble polymer having a concentration of 1 to 30 mass %, adding from 5 to 60 parts by mass of cellulose fibers to 100 parts by mass of the aqueous solution to prepare a liquid dispersion (1), adding from 10 to 200 parts by mass of thermally expandable microcapsules to the liquid dispersion (1) to prepare a liquid dispersion 2), and evaporating the moisture content of the liquid dispersion (2).
Claims4
A rubber composition, comprising:
- from 1 to 30 parts by mass of a thermally expandable microcapsule complex per 100 parts by mass of a rubber component, the thermally expandable microcapsule complex having a structure comprising a plurality of thermally expandable microcapsules adhered on cellulose fibers, wherein the thermally expandable microcapsule complex has a structure comprising a plurality of the thermally expandable microcapsules connected in a thread-like, band-like, or clustered manner on the cellulose fibers, the cellulose fibers being cellulose microfibrils.
Dependencies are inferred from the claim text.