Phosphorous-acid monomer containing emulsion polymer modified urea-formaldehyde resin compositions for making fiberglass products
US10280301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2015 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | May 6, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2101/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides polymer modified aqueous urea formaldehyde resin (UF resin) binder compositions useful in making a treated glass mat, e.g., for roofing shingles, wherein the polymer modifier is an multistage aqueous emulsion acorn copolymer comprising one protuberant polymer stage containing phosphorous acid groups and one or more other polymer stage comprising an addition copolymer incompatible with the protuberant polymer stage, wherein the multistage aqueous emulsion copolymer has a measured Tg of from −60 to 25° C., or, preferably from −30 to 12° C. and, further wherein the weight ratio of the total of monomers used to make the one or more other polymer stage to the total amount of monomers used to make the protuberant polymer stage ranges from 3:1 to 50:1, or, preferably, from 3:1 to 30:1 or, more preferably, from 3:1 to 20:1, or, even more preferably, from 8:1 to 12:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.