Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3549/23A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing CofiledCriticalMinnesota Mining and Manufacturing Co
Publication of GB194274ApublicationCriticalpatent/GB194274A/en
A flexible and waterproof adhesive is in the form of a varnish prepared from linseed oil or china wood oil and a gum, for example, dammar, kauri, or copal, and to which a drying-agent, operating outwardly, for example, borate of manganese, is added. To accelerate the drying from the outer surface inwardly, and to improve the adhesive properties, electrolytic process white lead, known as "Dowdy white," is added; a paste drier, for example, lead acetate and resinate of manganese also may be employed. When a more fluid adhesive is required, a japan drier is used, for example, "schrack japan." In preparing the varnish, the oil is boiled until it reaches nearly a solid state, and the varnish may comprise three parts of gum dammar with two parts of linseed oil. Castor oil may be incorporated with the varnish when the drying action is required to be retarded. Specification 219,341 is referred to.
GB3549/23A1922-03-041923-02-06Improvements in and relating to the manufacture of sand-paper or like composite structures
ExpiredGB194274A
(en)