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07-29-2020

Heat Stabilizers for Polyamides

Reduction of Copper and Halogen Content

Newly developed antioxidant blends with new opportunities for the compounding industry are additions to the additive portfolio for polyamides from L. Brüggemann GmbH & Co. KG, Germany.
Bruggolen TP-H1607 is a proprietary copper based stabilizer package which reportedly significantly extends long term mechanical property retention of polyamides to limits unmatched by existing classic copper salt based anti-oxidants. For example, tests demonstrate that it enables heat stabilization of unreinforced PA6.6 beyond 5000 hours at 150°C, significantly outperforming conventional copper salt based stabilizers which level off at 3000 hours at this temperature.

According to the company, Bruggolen TP-H1607 outperforms conventional copper salt based stabilizers. It extends mechanical property retention after heat aging to new limits © Brüggemann

The new antioxidant blend offers the opportunity to reduce copper and halogen content. In PA6.6 at 150°C the copper concentration in the compound was reduced by a factor of more than 5 and still matched the maximum performance level of existing copper salt based products. This capability allows cost savings and opens applications in the E&E sector, such as switch housings and sensors, where a comparative tracking index CTI of 600V is required. Significantly, trials revealed that Bruggolen TP-H1607 exhibits no greater influence on electro-corrosion than conventional phenolic/phosphite stabilisers used extensively in E&E.

For Border Line Applications


With the new Bruggolen TP-H1805 Brüggemann has developed an easily processable high heat stabilizer package which stretches the limit for continuous-use temperatures - up to 200°C in the case of glass reinforced PA6 and beyond 200°C for PA6.6. This antioxidant blend does not require prior activation and is also effective at temperatures below 200°C. Thus, compounders have the opportunity to produce cost efficient aliphatic polyamide based materials for border line applications previously reserved for higher priced polyphthalamides or other high performance polymers such as polyphenylene sulfide. In addition, Bruggolen TP-H1805 may offer the opportunity to substitute, in certain applications, PA6.6 for the less expensive PA6.
Both stabilizers are supplied in pellet form and are easy to dose and disperse during compounding.

The high temperature stabilizer Bruggolen TP-H1805 enables glass fiber-reinforced PA6 to be used continuously up to 200°C and PA6.6 beyond 200°C © Brüggemann

With the new Bruggolen TP-H1805 Brüggemann has developed an easily processable high heat stabilizer package which stretches the limit for continuous-use temperatures - up to 200°C in the case of glass reinforced PA6 and beyond 200°C for PA6.6. Bruggolen TP-H1805 does not require prior activation and is also effective at temperatures below 200°C. Thus, compounders have the opportunity to produce cost efficient aliphatic polyamide based materials for border line applications previously reserved for higher priced polyphthalamides or other high performance polymers such as polyphenylene sulfide. In addition, Bruggolen TP-H1805 may offer the opportunity to substitute, in certain applications, PA6.6 for the less expensive PA6. Both stabilizers are supplied in pellet form and are easy to dose and disperse during compounding.

Dr. Klaus Bergmann, Head of Polymer Additives at Brüggemann: “Our goal is to offer heat stabilizers for polyamides across all temperature ranges and all application areas. With the introduction of these new products we are further extending our portfolio of high-performance stabilizers to provide even more value to our customers.”

Company profile

Brüggemann Chemical L. Brüggemann KG

Salzstr. 123-131
DE 74076 Heilbronn
Tel.: 07131 1575-0
Fax: 07131 157565

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