The invention relates to a hardenable two part acrylic composition, a polymer component of the two part hardenable composition and a method of producing a polymer component of the two part composition. The hardenable two part acrylic composition comprises an acrylic polymer composition first part and an acrylic monomer composition second part. The acrylic polymer composition first part comprises a first type of acrylic polymer particles characterized in that each first type of acrylic polymer particle is formed of a network of coalesced emulsion polymerized acrylic microparticles or is microporous. The acrylic polymer composition may comprise emulsion polymerised acrylic polymer particles of particle size between 10 and 2000nm. The invention also extends to the use of acrylic polymer particles formed of a network of coalesced emulsion polymerized acrylic microparticles as a dough time reduction agent in a hardenable two part acrylic composition.本發明係關於一種可硬化雙組份丙烯酸組合物、該雙組份可硬化組合物之聚合物成份及製造該雙組份組合物之聚合物成份的方法。該可硬化雙組份丙烯酸組合物包含丙烯酸聚合物組合物第一組份及丙烯酸單體組合物第二組份。該丙烯酸聚合物組合物第一組份包含第一類型之丙烯酸聚合物粒子，其特徵在於各第一類型之丙烯酸聚合物粒子由聚結乳液聚合丙烯酸微粒之網狀物形成或為微孔性。該丙烯酸聚合物組合物可包含粒度介於10nm與2000nm之間的乳液聚合丙烯酸聚合物粒子。本發明亦延伸至由聚結乳液聚合丙烯酸微粒之網狀物形成之丙烯酸聚合物粒子作為可硬化雙組份丙烯酸組合物中之糊熟時間縮短劑的用途。
