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    • 41. 发明申请
    • THICKENABLE VINYL ESTER RESIN COMPOSITIONS
    • THIKENABLE乙烯酯树脂组合物
    • WO01096473A1
    • 2001-12-20
    • PCT/CA2001/000814
    • 2001-06-01
    • C08J5/04C08F290/06C08K5/04C08L63/10D06M11/00D06M11/44D06M13/07D06M13/127D06M13/224D06M15/273D06M15/327D06M15/41D06M15/55C08K3/22C08K5/07C08K5/10D06M15/00
    • D06M15/55C08F290/064C08K5/04C08L63/10D06M11/44D06M15/327D06M15/41
    • A curable vinyl ester resin composition capable of undergoing B-staging at room temperature comprises (a) an unmodified vinyl ester resin; (b) a reactive diluent consisting of an ethylenically unsaturated monomer; (c) a free-radical curing agent; (d) a B-staging agent comprising a Group II metal oxide or hydroxide, or a mixture thereof; and (e) a thickening agent comprising an ester, a ketone, an aldehyde or a mixture thereof. The thickening agent coacts with the B-staging agent to cause B-staging of the vinyl ester resin at room temperature. The vinyl ester resin composition according to the invention is particularly useful for impregnating a fibrous material such as a woven fabric material. The fibrous material impregnated with the vinyl ester resin composition of the invention has a shelf life of up to 12 months. B-stage is generally reached in about two weeks following mixture of the various components and impregnation of the fibrous material.
    • 能够在室温下进行B阶分级的可固化的乙烯基酯树脂组合物包括(a)未改性的乙烯基酯树脂; (b)由烯属不饱和单体组成的反应性稀释剂; (c)自由基固化剂; (d)包含第II族金属氧化物或氢氧化物或其混合物的B分级试剂; 和(e)包含酯,酮,醛或其混合物的增稠剂。 增稠剂与B分段剂共同作用,使乙烯基酯树脂在室温下进行B-分级。 根据本发明的乙烯基酯树脂组合物特别可用于浸渍纤维材料如织物材料。 用本发明的乙烯基酯树脂组合物浸渍的纤维材料具有长达12个月的保质期。 在各种组分的混合和纤维材料浸渍后的大约两周内通常达到B阶段。