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    • 25. 发明申请
    • LOW VOC (VOLATILE ORGANIC COMPOUNDS), DIMETHYL-2-PIPERIDONE SOLVENT-BASED, PVC AND CPVC PIPE AND COMPONENT ADHESIVES AND PRIMERS CONTAINING MINIMAL OR NO TETRAHYDROFURAN
    • 低挥发性有机化合物(挥发性有机化合物),二甲基-2-哌啶酮溶剂,PVC和CPVC管和组分粘合剂和包含最小或无四氯乙烯的前体
    • WO00050494A1
    • 2000-08-31
    • PCT/US2000/004509
    • 2000-02-23
    • C08J5/12C08K5/07C08K5/3435C08L33/12C09J127/06C09J127/24C08J3/00C08J9/32C08K5/34C08L27/00
    • C08J5/125C08J2327/00C08K5/07C08K5/3435C08L33/12C08L2666/04C09J127/06C09J127/24C08L27/06
    • Novel low VOC solvent-based adhesives are provided, comprising a mixture of low vapor pressure, isomeric dimethyl-2-piperidones (DMPD) blended with (1) a non-solvent diluent, specifically, acetone (a VOC-exempt compound), or with mixtures of acetone and other known ketonic solvents such as methyl ethyl ketone (MEK), diethyl ketone (DEK), methyl propyl ketone (MPK), and methyl iso-butyl ketone (MIBK), cyclohexanone, and (2) thermoplastic PVC or CPVC resins. Omission of the resin provides a novel primer for pipes. The blended mixtures yields PVC or CPVC pipe adhesives and primers that: (1) result in low VOC formulas (e.g., less than 510 g/l for PVC pipe and less than 490 g/l for CPVC pipe); (2) are very economical in the industry; (3) yield strong, quick setting, durable pipe joints that meet the required standards and performance criteria (e.g., ASTM D-2564 lap shear for PVC); (4) yield stable, low viscosity solutions that, in the case of adhesives, can be readily adjusted with thixotropes (e.g., Aerosil 200) to give desirable flow characteristics and body, as well as primers for sovlent welding PVC and CPVC pipe and components; and (5) can be formulated with minimal (10 wt.%) or no cyclic ethers such as THF.
    • 提供了新的低VOC溶剂型粘合剂,其包含与(1)非溶剂稀释剂,特别是丙酮(VOC-豁免化合物))混合的低蒸气压,异构二甲基-2-哌啶酮(DMPD)的混合物,或 使用丙酮和其他已知的酮溶剂如甲基乙基酮(MEK),二乙基酮(DEK),甲基丙基酮(MPK)和甲基异丁基酮(MIBK),环己酮和(2)热塑性PVC或 CPVC树脂。 树脂的省略为管道提供了一种新颖的底漆。 混合混合物产生PVC或CPVC管道粘合剂和底漆,其:(1)导致低VOC配方(例如,PVC管小于510g / l,CPVC管小于490g / l); (2)在行业中非常经济; (3)产生坚固,快速固化,符合所需标准和性能标准的耐用管接头(例如,ASTM D-2564 PVC搭接剪); (4)产生稳定的低粘度溶液,在粘合剂的情况下,可以用触变剂(例如Aerosil 200)容易地调节以产生理想的流动特性和体,以及用于浸渍PVC和CPVC管和组分的底漆 ; 和(5)可以用最少(10重量%)或不含环状醚如THF配制。