Polyetherpolyamide elastomer having low water absorption
US6864348B2 · kind B2 · utility
2Cited by
11References
12Claims
0Family size
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Key dates
| Filing date | Nov 27, 2002 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Nov 27, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31761
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyetherpolyamide elastomer showing a low water absorption, a high stress relaxation, and a high elastic recovery percentage of elongation is obtainable by polymerizing an aminocarboxylic acid compound and/or a lactam compound, a triblock polyetherdiamine compound having the following formula, and a dicarboxylic acid compound: [x is a value of 1 to 20, y is a value of 4 to 50, z is a value of 1 to 20].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.