Zhejiang Hailian New Materials Technology: Building an Integrated DADMAC Value Chain in Water-Soluble Polymers

A new production base dedicated to water-soluble polymers and functional specialty chemicals is now fully operational in the Hangzhou Bay Shangyu Economic and Technological Development Zone, Zhejiang, China.

Building on more than three decades of technical expertise, manufacturing experience and international customer relationships developed by Zhejiang Xinhaitian, Zhejiang Hailian New Materials Technology Co., LTD. has become the principal operating and manufacturing entity for the next stage of the business.

Its portfolio centers on diallyl dimethyl ammonium chloride (DADMAC/DMDAAC), poly(diallyldimethylammonium chloride) (PolyDADMAC), polyamines, formaldehyde-free fixing agents, polyquaterniums and dioctyl sodium sulfosuccinate. Together, these products form an increasingly integrated value chain extending from functional cationic monomers to water-soluble polymers and downstream applications in water treatment, textile processing, papermaking and personal care.

At the center of this structure is DADMAC. Rather than operating as an isolated product line, DADMAC provides an upstream building block for PolyDADMAC, selected polyquaterniums and functional copolymer systems, creating closer links between raw-material control, polymerization technology and downstream formulation.

More Than Three Decades of Industrial Development

The industrial history behind the business dates back to 1994. Over the following three decades, Zhejiang Xinhaitian established capabilities in R&D, manufacturing, sales and technical service, while developing business relationships across more than 40 countries and regions.

Its experience became particularly established in DADMAC, PolyDADMAC, water-treatment polymers and textile auxiliaries.

As Zhejiang’s chemical industry continued to consolidate production into specialized industrial parks, the manufacturing center of the business shifted to Zhejiang Hailian New Materials Technology Co., LTD. in the Hangzhou Bay Shangyu Economic and Technological Development Zone.

The new production base is now fully operational. Zhejiang Hailian New Materials Technology Co., LTD. currently has an aggregate annual production capacity of approximately 140,000 metric tons of polymeric and specialty chemical products.

Government source | Click Shaoxing Municipal Bureau of Ecology and Environment

DADMAC as the Core of an Integrated Cationic Polymer Platform

Within the current product portfolio of Zhejiang Hailian New Materials Technology Co., LTD., DADMAC is not simply a major commercial product; it is also an important upstream monomer connecting several downstream polymer families.

DADMAC is a water-soluble quaternary ammonium cationic monomer that can undergo homopolymerization or copolymerization with other functional monomers to produce cationic water-soluble polymers with different charge densities, molecular structures and performance characteristics.

Zhejiang Hailian New Materials Technology Co., LTD. currently produces DADMAC primarily in 60% and 65% concentrations, with an annual production capacity of approximately 50,000 metric tons.

This upstream manufacturing platform supports further development into PolyDADMAC, polyquaterniums and other functional polymers.

1. DADMAC: 50,000 MT/Y of Core Cationic Monomer Capacity

In addition to scale manufacturing, the company has maintained long-term technical development in DADMAC synthesis, impurity control, polymerization compatibility and industrial production equipment.

Public patent records show that Chinese invention patent CN115521215B,“Preparation Method and Preparation Equipment for Diallyl Dimethyl Ammonium Chloride,” remains active, with Zhejiang Hailian New Materials Technology Co., LTD. and Zhejiang Xinhaitian listed as joint patent holders.

The patent covers several aspects of DADMAC production, including reaction processing, impurity filtration, oil-water separation and equipment optimization.

Patent verification | Google Patents

For the European market, DADMAC (CAS No. 7398-69-8) can be identified in the European Chemicals Agency’s ECHA CHEM database with corresponding substance and REACH dossier information. DADMAC supplied by Zhejiang Hailian New Materials Technology Co., LTD. has completed the applicable REACH compliance procedures for relevant market access.

ECHA substance search: Click here REACH compliance data

2. PolyDADMAC: 35,000 MT/Y of Downstream Polymer Capacity

PolyDADMAC is one of the most direct and commercially important downstream polymers derived from DADMAC.

Polymerization of DADMAC produces a polymer with high cationic charge density. It is widely used for charge neutralization, coagulation and flocculation in water-treatment systems, with additional applications in papermaking, textiles, oilfield chemicals and other industrial processes.

Zhejiang Hailian New Materials Technology Co., LTD. currently has approximately 35,000 metric tons per year of PolyDADMAC production capacity.

Because the upstream DADMAC monomer is also manufactured internally at industrial scale, the company has established a vertically integrated DADMAC monomer→PolyDADMAC polymer production chain.

This integration supports closer control over monomer quality, raw-material availability, residual monomer levels, polymerization consistency and the development of products with different solids contents and viscosity ranges.

PolyDADMAC has completed applicable REACH compliance procedures. It is also independently verifiable through NSF’s official product database under Zhejiang Hailian New Materials Technology Co., LTD.

As of August 2026, PolyDADMAC products from the company are listed under NSF/ANSI/CAN 60—Drinking Water Treatment Chemicals - Health Effects, including products for coagulation, flocculation and related water-treatment applications across multiple concentration grades.

NSF official listing: nsf.org

3. Polyamines: 15,000 MT/Y for Water-Treatment Applications

In addition to PolyDADMAC, Zhejiang Hailian New Materials Technology Co., LTD. operates another major cationic water-soluble polymer platform based on polyamines, including Dimethylamine-Epichlorohydrin Copolymer.

Current annual production capacity for polyamine water-treatment chemicals is approximately 15,000 metric tons. Relevant products have completed REACH compliance procedures and are also covered by NSF listings.

NSF’s official database includes Polyamine products under Zhejiang Hailian New Materials Technology Co., LTD., including 50% and 60% cationic flocculant grades and Dimethylamine-Epichlorohydrin Copolymer products at multiple concentrations under NSF/ANSI/CAN 60.

NSF official listing: nsf.org

PolyDADMAC and polyamines therefore provide Zhejiang Hailian New Materials Technology Co., LTD. with two complementary cationic polymer platforms for water-treatment applications, supporting different raw-water characteristics, industrial wastewater conditions, charge-neutralization requirements, decolorization and flocculation systems.

4. Formaldehyde-Free Fixing Agents: 30,000 MT/Y and Further Integration into Textile Chemicals

The company’s cationic polymer platform also extends into textile-processing chemicals.

Zhejiang Hailian New Materials Technology Co., LTD. has approximately 30,000 metric tons per year of designed production capacity for formaldehyde-free fixing agents. Based on publicly available capacity information for comparable domestic producers, this places the company among the larger specialized producers of formaldehyde-free fixing agents in China.

Importantly, this product family is technically connected with the upstream DADMAC platform.

Chinese invention patent CN115748271B,“A High-Efficiency Terpolymer Formaldehyde-Free Fixing Agent for Reactive Dyes and Its Preparation Method,”describes a route in which DADMAC solution serves as an important feedstock together with other cationic functional monomers and crosslinking components.

This illustrates a broader internal value-chain relationship:

DADMAC functional monomer→cationic homopolymers and copolymers→formaldehyde-free fixing agents→textile dyeing and finishing applications

The company’s position in textile auxiliaries therefore derives not only from its 30,000 MT/Y manufacturing scale, but also from access to its own upstream cationic monomer and accumulated polymerization expertise.

Patent verification: Google Patents

5. Polyquaterniums: Extending the Platform into Personal Care and Functional Materials

Zhejiang Hailian New Materials Technology Co., LTD. also produces a range of polyquaterniums, including Polyquaternium-6, Polyquaternium-7, Polyquaternium-22 and Polyquaternium-39.

Polyquaternium-6 belongs to the DADMAC polymer family, while Polyquaternium-7 is based on a copolymer system involving acrylamide and DADMAC.

The chemical relationships can be independently referenced through the U.S. National Library of Medicine’s PubChem database.

This means that DADMAC, PolyDADMAC and selected Polyquaternium products share a common technical foundation in cationic monomer chemistry, polymerization control and functional polymer design.

PubChem references

Polyquaternium-6

Polyquaternium-7

The company also maintains approximately 5,000 metric tons per year of designed capacity for Dioctyl Sodium Sulfosuccinate, further extending its portfolio into textile, leather and other specialty applications.

International Compliance Framework Supporting Global Market Access

For specialty chemical manufacturers serving international markets, manufacturing scale alone is insufficient. Regulatory compliance, independent product qualification and structured management systems increasingly form part of supplier approval and procurement due diligence.

Zhejiang Hailian New Materials Technology Co., LTD. has established a compliance framework covering REACH, NSF, ISO 9001, ISO 14001, ISO 45001 and relevant ZDHC and GOTS requirements.

Its management systems include:

• ISO 9001 Quality Management System

• ISO 14001 Environmental Management System

• ISO 45001 Occupational Health and Safety Management System

China Certification and Accreditation Information Public Service Platform

For textile supply chains, relevant products have also been incorporated into compliance programs associated with ZDHC and GOTS requirements.

Under the ZDHC framework, chemical formulations are assessed against the ZDHC Manufacturing Restricted Substances List (MRSL) through approved conformity mechanisms. Compliance information may be reflected through the ZDHC Gateway and ChemCheck reporting system.

ZDHC ChemCheck

ZDHC MRSL

For GOTS, chemical inputs such as dyes and auxiliaries are evaluated by approved Scope 4 certification bodies. Compliant chemical inputs may receive a Letter of Approval and be included in approved chemical input databases.

GOTS Approved Chemical Inputs

ECOCERT GOTS Chemical Positive List

Patents and Standards Strengthen the Technology Platform

For a specialty chemical manufacturer, sustainable competitiveness depends not only on installed capacity but also on the ability to convert operating experience into proprietary technology, reproducible manufacturing processes and standardized quality requirements.

Zhejiang Hailian New Materials Technology Co., LTD. has developed an intellectual-property portfolio around its core DADMAC platform and downstream functional polymers.

The active DADMAC patent CN115521215B and the formaldehyde-free fixing-agent patent CN115748271B demonstrate two related directions: improving the manufacturing technology of the upstream monomer while extending that chemistry into higher-value downstream polymer applications.

Standards development provides another indicator of technical depth.

The company has participated in work related to T/ZZB 3886—2024, Diallyl Dimethyl Ammonium Chloride, under the“Made in Zhejiang”standards framework.

At the national level, China’s National Public Service Platform for Standards Information lists Zhejiang Hailian New Materials Technology Co., LTD. among the principal drafting organizations for GB/T 44009—2024, Green Product Assessment—Dyes, a currently effective recommended national standard administered by the National Technical Committee on Dyestuffs of Standardization Administration of China.

National Public Service Platform for Standards Information | Click Zhejiang Hailian New Materials Technology Co., LTD.

GB/T 44009—2024

Taken together, upstream monomer manufacturing, downstream polymer development, patent activity, standards participation and international compliance provide Zhejiang Hailian New Materials Technology Co., LTD. with a competitive structure that extends beyond manufacturing scale alone.

Eight Application Areas Built on a Common Polymer Chemistry Platform

The company’s current portfolio serves eight broad application areas:

water-soluble polymer chemicals, textile and dyeing chemicals, industrial water-treatment chemicals, personal-care chemicals, papermaking chemicals, agrochemical applications, leather chemicals and oilfield chemicals.

Its products are supplied to customers in more than 40 countries and regions.

Although these markets appear diverse, many are connected by common technical principles: water-soluble polymer chemistry, cationic charge control and functional polymer design.

In water treatment, PolyDADMAC and polyamines provide charge neutralization, coagulation and flocculation functions. In textile processing, DADMAC-derived copolymers can be incorporated into dye-fixing systems. In papermaking, cationic polymers are used in wet-end chemistry and contaminant control. In personal-care formulations, selected polyquaterniums provide conditioning, antistatic and film-forming properties.

The resulting portfolio is therefore not simply a collection of unrelated specialty chemicals. It is increasingly organized around a common technical architecture:

DADMAC functional monomers→cationic water-soluble polymers→application-specific functional chemicals.

From Zhejiang Xinhaitian to Zhejiang Hailian New Materials Technology Co., LTD.: A New Stage of Development

More than three decades of industrial development have established technical know-how, customer relationships and market recognition associated with Zhejiang Xinhaitian.

With the new Hangzhou Bay Shangyu production base fully operational, Zhejiang Hailian New Materials Technology Co., LTD. has become the principal manufacturing and operating platform carrying these capabilities into the next stage of development.

The current manufacturing structure includes approximately 50,000 MT/Y of DADMAC, 35,000 MT/Y of PolyDADMAC, 15,000 MT/Y of polyamines and 30,000 MT/Y of formaldehyde-free fixing agents, alongside polyquaterniums, Dioctyl Sodium Sulfosuccinate and other functional specialty chemicals.

Beyond capacity, the company is strengthening its position through proprietary technology, standards participation and international compliance systems including REACH, NSF and ISO management frameworks, together with textile supply-chain requirements associated with ZDHC and GOTS.

From a core cationic monomer to downstream polymers and application-specific chemicals, Zhejiang Hailian New Materials Technology Co., LTD. is building an increasingly integrated platform for water-soluble polymers and functional specialty chemicals—combining upstream control, polymerization expertise, industrial-scale manufacturing and global market compliance.

Enterprise Contact Information

Address: Second Stage Industry Concentration Park,Taoyan town,Shaoxing,China

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