| abstract |
The present invention, which provides, can be used for manufacturing aqueous urea formaldehyde resin (UF resin) adhesive composition for example modified for the cement-based powder material of the processed glass mats of roof tile plate, wherein polymer modifiers is multistage water-based emulsion acorn nut copolymer, the copolymer includes a kind of protrusion grade polymer containing phosphorous acid and one or more other grade polymers comprising addition copolymer not compatible with the protrusion grade polymer, wherein the multi-level water emulsion copolymers have from -60 to 25 DEG C, or the Tg of preferably from -30 to 12 DEG C of measurement, and further, wherein the monomer populations for manufacturing one or more other grade polymers and the weight ratio for manufacturing the monomer total amount for protruding grade polymer are from 3:1 to 50:1, or preferably, from 3:1 to 30:1, or more preferably Ground, from 3:1 to 20:1, or even further preferably, in the range of from 8:1 to 12:1. |