Goulac, also known as Glutrin, is a core binder developed from wood pulping. It is made from lignin pitch. [1]
The material has a dark colour and is soluble in water. [2]
Goulac water was used to make Gallagher sharp sand. [3] It was trademarked in the 1940s. [1] It prevents a chemical reaction between lead arsenate and lime sulphur. [4]
When used to make mold cores from sand, it results in a very hard surface after baking, however the sand can absorb moisture if the core is not used soon after being prepared. [5] Use of Goulac allows the cores to be baked at a lower temperature compared to other types of binders. [5]
Glutrin was used in road paving in the early 20th century.
Goulac, also known as Glutrin, is a core binder developed from wood pulping. It is made from lignin pitch. [1]
The material has a dark colour and is soluble in water. [2]
Goulac water was used to make Gallagher sharp sand. [3] It was trademarked in the 1940s. [1] It prevents a chemical reaction between lead arsenate and lime sulphur. [4]
When used to make mold cores from sand, it results in a very hard surface after baking, however the sand can absorb moisture if the core is not used soon after being prepared. [5] Use of Goulac allows the cores to be baked at a lower temperature compared to other types of binders. [5]
Glutrin was used in road paving in the early 20th century.