Infill coated with a polyurethane prepolymer and artificial turf surfaces including the same
US11312813B2 · kind B2 · utility
0Cited by
4References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 22, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Oct 13, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C13/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In various embodiments, coated infill includes a plurality of infill granules and a preformed coating on the infill granules including a cured polyurethane product of at least one polyurethane prepolymer component and a curative component. The polyurethane prepolymer component includes a reaction product of an isocyanate component including diphenylmethane diisocyanate (MDI) and a polyol component, and has a free isocyanate content (% NCO) from 2 wt % to 12 wt %. The curative component includes water. Methods for making an artificial turf surface using the coated infill are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.