Biodegradable hook-type molded surface fastener with outstanding moldability
US11980259B2 · kind B2 · utility
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5References
11Claims
0Family size
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Key dates
| Filing date | Mar 26, 2020 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Jan 10, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A molded hook surface fastener having a base plate and hook engaging elements projecting from a surface of the base plate, both the base plate and the hook engaging elements being formed of a resin mixture containing polybutylene succinate (A), a modified starch having an amylose content of 45% by weight or more (B), and polyvinyl alcohol (C). The resin mixture is further characterized by having both a continuous phase and a dispersed phase, with the polybutylene succinate (A) present in the continuous phase, and the modified starch (B) and polyvinyl alcohol (C) present in the dispersed phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.