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Toynol® DF-57 Anti-webbing Agent

Introduction

TOYNOL® DF-57 is a anti-webbing agent widely be used in latex industry dipping process and other applications. This nonionic,Acetylenic diol-based surfactant can be utilized in areas where foam prevention or foam elimination is necessary with-out causing film problems. Some of the benefits include: 

Excellent foam knock down ability 

Quick migration, leading to low dynamic surface tension 

Control foaming created by other surfactants 

Excellent flow, levelling and gloss

Chemical Composition

Modified Acetylenic Diol Compound Surfactant  ( Nonionic)

Typical properties (Table 1)

Item

DF-57

DF-67

Appearance

Yellow liquid

Yellow liquid

Active content

62%

60%

Water solubility

Slightly

Slightly

Sort

Acetylenic diol/Polyether

Acetylenic diol/Polyether    

Latex Text Comparison (Table 2)

Item

1#

2#

Acrylonitrile-butadienelatex(g)

100

100

TOYNOL DF-57

0.3%

Defoaming Time

60 mins

2 mins

Qualification Rate(%)

90

98

Recommended Applications

Latex Dipping Applications

During the latex dipping process, it will coagulate when latex contact the mold covered by calcium salt. It will cause shrinkage and web between two adjacent fingers if there is the foam in the latex.Toynol® DF-57/67 as a anti-webbing agent can be used to eliminate the foam caused by stabilizing agent, at the same time reduce surface tension of latex and enhance latex migration to the mold surface to effectively covering mold surface, greatly reducing the defects such as pinhole, webbing, etc. can make the products thickness even and improve the qualification. 

Protective Coatings Industrial

Toynol® DF-57/67 can supply an excellent ability of foam control and knockdown in the water-based industrial protective coatings. Those products are compatible with variety of resins, and can be stored with coating products without causing serious decompose and losing defoaming ability. 

Other Applications

Toynol® DF-57/67 has also shown efficacy as antifoams, defoams and deairentrainent aids in the following systems.

Building coatings 

Paper coatings

Water-based adhesives

Synthetic metal working lubricants

Addition Levels

0.1-0.4 wt.%, optimal concentration levels should be determined by running a ladder study.


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