Invention Application
US20150093952A1 METHACRYLIC ACID POLYMER EXTENDED UREA-FORMALDEHYDE RESIN COMPOSITION FOR MAKING FIBERGLASS PRODUCTS 有权
甲基丙烯酸聚合物扩展尿素 - 甲醛树脂组合物制备纤维玻璃制品

METHACRYLIC ACID POLYMER EXTENDED UREA-FORMALDEHYDE RESIN COMPOSITION FOR MAKING FIBERGLASS PRODUCTS
Abstract:
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.
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