When was trade dispute act came into existence?
No context provided
When was trade disputes act 1906 came into existence?
21 December 1906
The case was met with immediate outrage for creating, or reviving, economic torts as a weapon to undermine the right to strike. It was reversed by the Trade Disputes Act 1965. 
When was second trade disputes act came into existence?
1965
Rookes v Barnard
Collymore v Attorney General
https://en.wikipedia.org/wiki/Collymore%20v%20Attorney%20General
Trade Disputes Act 1906
https://en.wikipedia.org/wiki/Trade%20Disputes%20Act%201906
Category:United Kingdom Acts of Parliament 1965
https://en.wikipedia.org/wiki/Category%3AUnited%20Kingdom%20Acts%20of%20Parliament%201965
Rookes v Barnard
https://en.wikipedia.org/wiki/Rookes%20v%20Barnard
The Trade Disputes Act 1906 (6 Edw. 7 c. 47) was an Act of the Parliament of the United Kingdom passed under the Liberal government of Sir Henry Campbell-Bannerman. The Act declared that unions could not be sued for damages incurred during a strike.
Trade Disputes Act 1906
The Trade Disputes Act 1965 is an Act of Parliament of the United Kingdom, which supported closed shop practices in industrial relations.
Trade Disputes Act 1965
The Trade Disputes Act was an Act of the Parliament of the United Kingdom that declared that unions could not be sued for damages incurred during a strike. The first Trade Disputes Act came into existence on 21 December 1906. A second Trade Disputes Act, which supported closed shop practices in industrial relations, came into existence in 1965.