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DOWSIL™ 71 Additive

シリコーン消泡剤。水系塗料インキ用途。無シリカ成分、難ハジキ、消泡性。

优势:

  • 100%オルガノ変性シリコーン
  • 自己乳化
  • 低剪断での配合が容易
  • そのまま、または極性溶媒で希釈して使用できます
  • さまざまなインクおよびOPV樹脂との互換性
  • 非常に低い添加量で効果を発揮
  • 製造中および加工中の優れた泡制御
  • せん断安定性
  • 長期保管後もパフォーマンスを継続
  • フィルムのサブストレートでも欠陥を防止する
  • 食品接触用途に関する米国、ヨーロッパ、およびヨーロッパ内の特定の現地国の規制に準拠

性能

这些数值为典型性能,并且不用于在规格制定过程中使用。

典型性能

  • 产品交付 聚合物
  • 优点 泡沫控制
  • 保质期 720 Days
  • 动力粘度 500 Centipoise
  • 性能优势 泡沫控制, 相容性
  • 无溶剂 true
  • 有效成分 100 %
  • 有机硅HLB含量 1.31 %
  • 比重 @ 25C 1
  • 水性体系 true
  • 浊点 < 0 °C
  • 目标配方 水性
  • 系统 水性
  • 表面张力 26.4 mN/m
  • 闭口闪点 > 100 °C
  • 颜色 透明无色至褐色浑浊液体

Additives for long-lasting, defect-free foam control in inks and overprint varnishes

Are you looking for a long-lasting foam control additive for your ink or overprint varnish (OPV) that performs during both the manufacturing and printing processes and does not cause surface defects, even on filmic substrates? Is storage stability a concern? Do you also need to meet regulatory requirements for various food-contact applications? Then consider DOWSIL™ 71 Additive and DOWSIL™ 74 Additive. These foam control agents provide excellent, long-lasting foam control at reduced use levels while maintaining the integrity of the coating, and they comply with U.S., European and certain local country regulations within Europe for food contact.

Unlike silicone emulsion products, DOWSIL™ 71 and 74 Additives are supplied as 100% organomodified silicones. They are low viscosity, surfactant-like compounds that self-emulsify and thus are easy to incorporate at low shear, while also avoiding any issues with emulsion instability. They are also highly effective in a wide range of acrylic resin formulations, providing excellent foam control at much lower use levels without causing cratering and other surface defects associated with silicone emulsions, even on non-absorbent filmic substrates.

Effective foam control at very low use levels

With their unique organomodified silicone structure, DOWSIL™ 71 and 74 Additives provide excellent foam control at much lower use levels than competitive emulsion technology.

Figure 1: DOWSIL™ 71 Additive, for example, can be used at nearly half the level of a silicone emulsion in a waterborne flexographic ink.

Graph: DOWSIL™ 71 Additive can be used at nearly half the level of a silicone emulsion in a waterborne flexographic ink

DOWSIL™ 71 Additive outperforms a silicone emulsion in a waterborne OPV after nine weeks of storage

Because it is self-emulsifying, DOWSIL™ 71 Additive continues to provide excellent foam control during printing even after long-term storage when used at up to five times less than a silicone emulsion (Fig 2.)

Figure 2: Storage performance of DOWSIL™ 71 Additive in a waterborne flexographic ink

Graph: Storage performance of DOWSIL™ 71 additive in a waterborne flexographic ink

DOWSIL™ 71 Additive provides a defect-free surface in a waterborne flexographic ink

Unlike silicone emulsions, which contain silica particles that can lead to defect formation, DOWSIL™ 71 and 74 Additives are highly organic in nature. They are compatible with a wide range of acrylic resins and provide defect-free surfaces.

Silicone emulsion defects vs. defect-free DOWSIL™ 71 Additive

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DOWSIL™ 71 Additive
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