How PPG lost its $29.5 bln bet on Dulux paint

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* PPG's first offer made two weeks before Dutch vote

* Bid for Dulux paint maker caused political backlash

* Heated exchanges conducted in the public eye

By Pamela Barbaglia and Toby Sterling

LONDON/AMSTERDAM, June 1 (Reuters) - In early March, U.S. paint maker PPG's Chief Executive Michael McGarry flew from Pittsburgh to Amsterdam to take Akzo Nobel boss Ton Buechner for lunch.

There, the 59-year-old American ambushed Buechner with a takeover plan and price tag that his company had been working on for months, a source familiar with the talks told Reuters.

Rather than spark a discussion, McGarry's bold move at their March 2 meeting triggered a hard-nosed response.

"He was brutal in his approach and Akzo decided to respond in the same aggressive way," said the source.

The offer was rebuffed on March 9. Akzo said the proposal was "not in the interests of its employees" and the firm would pursue different plans to sell its specialty chemicals business.

After two more offers were rejected, the Pittsburgh-based firm on Thursday dropped its bid, whose value had risen to 26.3 billion euro ($29.48 billion).

The nature of the lunchtime meeting has not previously been reported, but other elements of PPG's pursuit emerged in news briefings and a May court hearing, exposing details of the takeover bid that would normally stay behind closed doors.

"The fact that it went public made the process difficult from the beginning," Bryan Iams, PPG'S vice president for corporate and government affairs, told Reuters in an emailed response to questions.

Akzo's spokesman Leslie McGibbon confirmed two face-to-face meetings took place, including the lunchtime appointment.

What PPG'S McGarry got wrong was the timing and the difficulty of pulling off such a deal in the Netherlands, where supervisory boards hold great sway and most companies including Akzo are protected by "poison pill" defences.

McGarry's message was delivered a fortnight before a Dutch general election on March 15, which included strong nationalist themes.

PPG's swoop on Akzo caused fury among the Dutch political establishment who turned its takeover plan into a political football to be used in the election debate.

McGarry, however, was determined to fight on for a deal that would give his firm access to some of the most popular paint brands in the world, such as Dulux.

"I don't think the political commentary changes the fact that there was a compelling strategic logic for the two companies to come together," said PPG's Iams.

Usually, takeover bids are followed by weeks of secretive negotiations as companies haggle over price and deal structure, and go on charm offensives with investors and regulators.