Key Players
Competitive Landscape
Key Players
Huntsman International LLC, Covestro AG, BASF SE, DuPont, CertainTeed, MOLL bauökologische Produkte GmbH (pro clima), Vaisala.
Table 6: Company Developments and Commercial Implications
| Evidence | Commercial effect | Buyer action |
|---|---|---|
| DIBt issued ETA-18/1146 for INTELLO and INTELLO PLUS on 28 November 2019 under Regulation (EU) No 305/2011 [4]. | Gives European buyers a documented performance basis, including an assumed working life of at least 50 years. | Ask for the current assessment status now that Regulation (EU) 2024/3110 has applied since 8 January 2026 [6]. |
| CertainTeed's November 2024 product data limits MemBrain to heating and mixed climates and to indoor humidity of no more than 50% [2]. | Narrows the buildings in which the film can be sold and puts the sale under a climate check. | Match climate zone, indoor humidification and interior finishes to the stated limits before ordering. |
| A Foods study published on 29 January 2026 reported 87.3% release over 7 days at 98% relative humidity, with slower release at 43% [1]. | Shows humidity-triggered release in packaging, at laboratory stage. | Request release and permeability data across the humidity range of the cold chain before any pilot. |
| Yoshinaga's 2019 paper found that for some products low-humidity resistance was high in one direction and only moderately low in the other. It advised against the desiccant dry-cup method for hydrophilic-layer films [13]. | Single-value permeance figures can mislead. | Require tests in both directions and at several humidity steps. |
Source: Future Market Insights analysis of the humidity-responsive polymers market, 2026.
How are the companies positioned?
The split follows the position in the supply chain. CertainTeed, pro clima and Vaisala sell finished products whose humidity response is the point of sale [2][3][12]. Huntsman, Covestro and BASF supply polyurethane films, dispersions and resins to laminators and coaters [8][9][10]. DuPont's Tyvek reaches Japan's building trade through Asahi-DuPont Flash Spun Products [16].
What matters when a buyer qualifies a humidity-responsive polymer supplier?
Test method, approvals and stated limits come first. pro clima holds a European Technical Assessment dated 28 November 2019 and a BBA certificate first issued on 22 January 2015 [4][5]. CertainTeed publishes ASTM E96 values and the climates it excludes [2]. The Japanese measurements show that the test method itself can change the result [13].
Which capabilities distinguish the product offers?
The range of response and the direction of use differ. MemBrain moves from 1 perm or less to more than 10 perms between dry and wet cup tests [2]. INTELLO reports an sd value of over 25 m in winter [3]. It reports moisture transport of over 500 g/m2 per week in summer [3]. Vaisala's sensor reads humidity through the capacitance of a polymer film [12]. In textiles, Huntsman, Covestro and BASF each describe vapour-permeable films or coatings [8][9][10].
How does geographic reach affect competition?
Approvals and codes are national or regional. The European assessment and the British certificate both cover INTELLO [4][5]. The International Residential Code names responsive vapor retarders for the United States [14]. Greenfield's product page and Asahi-DuPont's building materials pages show Tyvek-brand products in Japan [15][16]. A supplier with one approval reaches only one set of buyers.
Representative Company Overview
Table 7: Humidity-Responsive Polymers Market Representative Company Overview
| Company | Positioning | Verified activity |
|---|---|---|
| Huntsman International LLC | Supplies IROGRAN thermoplastic polyurethane for waterproof, breathable films in performance apparel. | Announced a new IROGRAN A 85 P 4394 HR grade on 21 June 2021 [8]. |
| Covestro AG | Supplies Impraperm waterborne polyurethane dispersions for water-vapour-permeable textile coatings. | Lists Impraperm 43153 as a microporous PUR system for garment and shoe coatings [9]. |
| BASF SE | Supplies Elastollan thermoplastic polyurethane, including grades for breathable films. | Describes TPU films and coatings that combine flexibility with water vapour permeability for textile laminates [10]. |
| DuPont | Developed Tyvek, sold in Japan by Asahi-DuPont Flash Spun Products. | Greenfield lists Tyvek Smart as a variable moisture-permeable airtight product, page updated 1 August 2023. Asahi-DuPont lists VCL Smart among its building materials [15][16]. |
| CertainTeed | Sells MemBrain, a 2-mil polyamide smart vapor retarder and air barrier. | Product data dated November 2024 gives under 1 perm in the dry cup test and over 10 perms in the wet cup test [2]. |
| MOLL bauökologische Produkte GmbH (pro clima) | Makes INTELLO and INTELLO PLUS humidity-variable vapour control layers. | Holds ETA-18/1146 dated 28 November 2019 and BBA Certificate 14/5155, second issue 15 July 2019 [4][5]. |
| Vaisala | Makes HUMICAP thin-film polymer humidity sensors. | Launched HUMICAP in 1973 as the first thin-film capacitive humidity sensor [12]. |
Source: Future Market Insights analysis of the humidity-responsive polymers market, 2026.
Research Methodology
The humidity-responsive polymers market assessment was conducted using primary interviews and secondary literature analysis combined with top-down data triangulation to validate market size, segment shares, and competitive positioning.
