The Company was incorporated at Chandigarh on 18th Dec. 1975 for manufacture of Caustic Soda, liquid chlorine, hydrochloric acid and calcium hypochlorite. The Company was originally incorporated under the name Punjab Alkalies Limited. The name was changed to Punjab Alkalies & Chemicals Ltd. on 19th April, 1983. The Company was promoted by Punjab State Industrial Development Corporation Ltd. (PSIDC). The Company entered into two agreements, both dated 19th March, 1981 with UHDE GmbH, West Germany (UHDE) for supply of process know-how an imported equipment and delegation of technical personnel to the company for technical supervision of the start-up of the plant including test run. The Company also entered into an agreement with UDHE India Ltd.(UIL), the Indian Subsidiary of UDHE, for providing design and detailed engineering for the project as well as assistance for procurement of indigenous items, Supervision of erection of plant and machinery and commissioning activities. UIL was to be paid Rs 27.5 lakhs for its engineering services and 25.7 lakhs for procurement services in addition to payment for deputation of its engineers to the plant site, UDHE was to be paid DM 58,44,000 for supplying equipment. The Company selected the Mercury Cell technology of UDHE, on account of its proven record of performance all over the world and overall lower capital investment and operating costs. Commercial operations began on 1st Feb. 1984. The Company's flakes marketed under the brand name "SUTLUJ" were well received in the market. During 1988-89 capacity utilisation and turnover amounted to 98.6% and Rs 18.39 crores respectively. In 1989-90, the capacity utilisation showed further improvement. The working results in terms of turnover and profits also showed remarkable improvement over the previous period. In September, 1984 production of hydrogen commenced. Industrial Licence was obtained for the manufacture of Sodium Hypochlorite and a Project for the conversion of Waste brine Sludge into useful products was under implementation. The 20 tonnes per day sodium hypochlorite unit was completed during 1986-87. The product was to be sold under brand name "SATLUJ". The Company also applied for a licence to set up another 100 tonnes per day Caustic Soda Plant at a cost of Rs.50 crores based on the membrane Cell technology. 2002 -Punjab Alkalies & Chemicals Ltd has informed that Punjab State Industrial Development Corporation Ltd has nominated Mukul Joshi, IAS, Principal Secretary to the Govt. of Punjab, Department of Industries & Commerce, as Director and Chairman of the Board of Directors of the Company in place of Mr Ramesh Inder Singh, IAS w e f March 15, 2002. -Harinder Singh Dhillon ceases to be Director of Punjab Alkalies & Chemicals. -S P Gupta resigns as Director from the Board of Punjab Alkalies & Chem. 2003 -Company Informed that it has become a Sick Industrial Company and accordingly the company has filed the necessary reference with the BIFR . -Punjab Alkalies & Chemicals case registered with BIFR 2014 -Shri D.P. Reddy, IAS as Director & Chairman on the Board of Directors of the Company 2022 -The Company has splits its face value from Rs. 10/- to Rs. 2/-. 2023 -Company name changed to Primo Chemicals Ltd. from Punjab Alkalies & Chemicals Ltd..