Loading patent…
AssigneeRohm and Haas Company
InventorsWilliam C. Finch, Michael D. Kelly, Sudhir M. Mulik, C. Damien Rodowski
Estimating the term…
The present invention provides methacrylic acid polymer modified aqueous urea formaldehyde resin (UF resin) binder compositions useful in making a treated glass mat, e.g. for roofing shingles, wherein the methacrylic acid polymer comprises the reaction product of at least 50 wt. %, based on the total weight of monomers used to make the methacrylic acid polymer, of methacrylic acid or its salts, or mixtures thereof, a water-soluble phosphorous or sulfur containing compound and the remainder of a carboxylic acid group containing monomer, such as acrylic acid. The methacrylic acid polymers have at least one of a phosphite group, hypophosphite group, phosphinate group, diphosphinate group, and/or sulfonate group and enable modified UF resins to have early strength development even when the binder compositions comprise from 0.1 to less than 5 wt. % of the polymer modifier, based on total solids of the UF resin and the polymer modifier.
An aqueous urea formaldehyde resin (UF resin) binder composition comprising the UF resin and from 0.1 to less than 5 wt. % of at least one polymer modifier, based on total solids of the UF resin and the polymer, wherein the polymer modifier is a methacrylic acid polymer that contains at least one acid group which is other than a carboxylic acid group and which is chosen from a phosphite group, hypophosphite group, phosphinate group, diphosphinate group, sulfonate group and combinations thereof, wherein the methacrylic acid polymer is the reaction product of 50 wt. % or more of methacrylic acid, a salt thereof, or mixtures thereof, based on the total weight of monomers used to make the methacrylic acid polymer up to 40 wt %, based on the total weight of monomers used to make the methacrylic acid polymer, of a carboxylic acid group containing monomer group consisting of acrylic acid, itaconic acid and maleic acid or its anhydride, and 4.0 to 25 wt %, based on total weight of monomer used to make the methacrylic acid polymer, of a water soluble phosphorous containing compound having an oxidation state of +3 or +1 or sulfur containing compounds having an oxidation state +4 or +1;
A method of making an aqueous urea formaldehyde resin (UF resin) binder composition comprising the UF resin and from 0.1 to less than 5 wt. % of at least one methacrylic acid polymer modifier, based on total solids of the UF resin and the polymer modifier, wherein the polymer modifier is a methacrylic acid polymer that contains at least one acid group which is other than a carboxylic acid group and which is chosen from a phosphite group, hypophosphite group, phosphinate group, diphosphinate group, sulfonate group and combinations thereof, comprising;
Dependencies are inferred from the claim text.