Low VOC (volatile organic compounds), dimethyl-2-piperidone solvent-based, PVC and CPVC pipe and component adhesives and primers containing minimal or no tetrahydrofuran
    1.
    发明授权
    Low VOC (volatile organic compounds), dimethyl-2-piperidone solvent-based, PVC and CPVC pipe and component adhesives and primers containing minimal or no tetrahydrofuran 有权
    低VOC(挥发性有机化合物),二甲基-2-哌啶酮溶剂型,PVC和CPVC管和组分粘合剂和引物含有最少或不含四氢呋喃

    公开(公告)号:US06372821B1

    公开(公告)日:2002-04-16

    申请号:US09651824

    申请日:2000-08-30

    IPC分类号: C08J932

    摘要: 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 mixture 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 solvent welding PVC and CPVC pipe and components; and (5) can be formulated with minimal (10 wt %) or no cyclic ethers such as THF.

    摘要翻译: 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:(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)容易地调节以产生所需的流动特性和体,以及用于溶剂焊接的底漆PVC和CPVC管和组分 ; 和(5)可以用最少(10重量%)或没有环醚例如THF配制。

    Pentanone-based CPVC adhesives having reduced content of heterocyclic
solvents for joining CPVC substrates
    2.
    发明授权
    Pentanone-based CPVC adhesives having reduced content of heterocyclic solvents for joining CPVC substrates 有权
    具有降低的用于连接CPVC基材的杂环溶剂含量的戊酮基CPVC粘合剂

    公开(公告)号:US06087421A

    公开(公告)日:2000-07-11

    申请号:US156995

    申请日:1998-09-18

    IPC分类号: C08K5/07 C09J127/24 C08K5/15

    CPC分类号: C09J127/24 C08K5/07

    摘要: CPVC adhesives for joining CPVC substrates, pipes and articles are provided which comprise (a) about 5 to about 25 wt. % CPVC resin, (b) about 20 to about 90 wt. % of a single pentanone or blends of pentanones, (c) 0 to about 20 wt. % total heterocyclic solvent, and (d) 0 to about 45 wt. % total of non-heterocyclic solvents other than component (b) (such as MEK, acetone, cyclohexanone, and so forth). The CPVC adhesive compositions of this invention permit a reduction in the content of heterocyclic solvents to be achieved while meeting performance standards applicable to CPVC pipe joining, such as hydrostatic burst strength and hydrostatic sustained pressure test.

    摘要翻译: 提供用于连接CPVC基材,管和制品的CPVC粘合剂,其包含(a)约5至约25wt。 %CPVC树脂,(b)约20至约90wt。 %的单一戊酮或戊酮的共混物,(c)0至约20wt。 %总杂环溶剂,和(d)0至约45wt。 (b)以外的非杂环溶剂的总量(例如MEK,丙酮,环己酮等)的总和。 本发明的CPVC粘合剂组合物允许在满足适用于CPVC管接合的性能标准(例如静水压力爆破强度和静水压力持续压力试验)的同时,可以实现所要实现的杂环溶剂的含量。