Rubbery composition and method for producing the same
US12234352B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Aug 12, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2224/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A rubbery composition is prepared by combining (A) a rubber component, (B) a cellulose, and (C) fluorene compound having a 9,9-bis(aryl)fluorene skeleton. The fluorene compound (C1) may be a compound represented by the following formula (1): wherein a ring Z represents an arene ring, R1 and R2 represent a substituent, X1 represents a heteroatom-containing functional group, k denotes an integer of 0 to 4, n denotes an integer of not less than 1, p denotes an integer of not less than 0. The rubbery composition has improved mechanical properties such as strength, elongation, and hardness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.