Why Ashland’s Drewplus defoamer quietly matters in everyday paints

Reviewed: ad hoc news Accessory & Components desk. Edited and checked on 2026-06-17, 14:09. Details in the imprint.

With the Drewplus defoamer series, Ashland puts a product into wall paints and industrial coatings that most users never see, but immediately notice if it is missing. Freshly rolled walls, factory-finished metal parts, glossy wood coatings - all rely on controlled foam.

What Drewplus does in paint

In a modern waterborne paint, high-speed mixing whips in a surprising amount of air. Tiny bubbles shimmer in the bucket, and if they survive onto the wall, they leave craters, pinholes, or a dull, uneven sheen after drying.

Drewplus defoamers are tailored surfactant and oil blends that destabilize these bubbles in the can, during application, and on the wet film, so the air escapes before the coating sets. Ashland highlights that the range covers architectural, wood, and industrial coatings as well as adhesives and construction compounds.

Variants for different systems

Ashland does not sell just one Drewplus product, but a full series, for example Drewplus L-475, Drewplus Y-381 or Drewplus TS-series, each tuned to a specific resin system and viscosity window. Many grades are supplied as low-viscosity liquids for easy incorporation at the grind or let-down stage.

The manufacturer points to compatibility with common binder chemistries such as acrylics, styrene-acrylics and vinyl acetate copolymers, and emphasizes low tendency to cause surface defects like fisheyes when dosed correctly. That matters when a satin wall paint must stay smooth under grazing light.

Balancing defoaming and surface quality

Defoaming in coatings is always a balancing act: too little and foam remains, too much or the wrong type and the surface can show defects, orange peel or loss of gloss. Drewplus formulations are designed to break foam quickly while minimizing such side effects in well-formulated systems.

In practice, many labs screen two or three Drewplus grades side by side, adjusting dosage stepwise and checking leveling and gloss panels after drying. The product becomes part of a fine-tuned recipe, not a one-size-fits-all fix.

Where Drewplus shows its strengths

The practical strengths of Drewplus show up in demanding applications. In low-VOC interior paints, where many traditional solvent-rich defoamers are no longer acceptable, the right Drewplus grade helps maintain flow and hiding power without reintroducing high-emission components.

In industrial metal coatings, fast spray application and elevated bake temperatures can generate and trap foam. Here, more robust Drewplus variants keep the film closed and glossy so car parts, machinery housings or shelves leave the line with a clean, professional look.

Limitations and formulation caveats

However, no defoamer is entirely invisible. Overdosing Drewplus, particularly in clear wood coatings or high-gloss enamels, can lead to subtle surface haze or craters that only become visible under strong sidelight or after polishing.

Formulators also need to watch interactions with other additives such as wetting agents, rheology modifiers and pigment dispersants. A wetting agent that is too aggressive can counteract defoaming, while certain thickeners may lock in bubbles if the Drewplus grade and dosage are not aligned.

Environmental and regulatory aspects

Regulators and large paint brands are steadily tightening VOC and hazard profiles across additives. Ashland positions many Drewplus grades for low-VOC, APE-free and label-conscious formulations, reflecting pressure from building standards and retailer eco-labels.

For building owners and homeowners, this remains invisible on the bucket label. Yet it influences indoor air quality after painting and whether a product qualifies for green-building certifications and retail ecolabels that are increasingly used in project tenders.

How Drewplus fits into Ashland’s portfolio

Drewplus sits within Ashland’s specialties portfolio for coatings, construction and adhesives. Alongside defoamers, the company sells cellulosic thickeners, dispersants and other modifiers that define how a paint pours, rolls and covers.

For Ashland, Drewplus is therefore not an isolated niche product, but part of a toolkit that lets major paint and construction brands source multiple critical additives from one partner. That typically deepens technical collaboration and can make Ashland more resilient against raw material and demand swings.

Company context and stock note

Ashland generates a significant share of its revenue with specialty additives for coatings, construction, personal care and pharma, where products like Drewplus anchor long-term customer relationships via technical performance rather than headline marketing. Shares of Ashland Inc (US0441861046) trade on the New York Stock Exchange in US dollars.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.