Russia avoided further diplomatic confrontation with Ukraine and the European Union at three-way trade talks on Monday and did not renew previous demands for Kiev's duty-free deal with the bloc to be put on hold.

Echoing comments from EU and Ukrainian officials, Russian Economy Minister Alexei Ulyukayev told reporters in Brussels that he had not raised the issue of postponing implementation of the EU-Ukraine free trade pact from its Jan. 1, 2016 start date.

"Our view is that the time remaining must be used as effectively as possible," he said of an agreement to continue negotiations on how the accord would be managed to address Moscow's concerns about its impact on Russian business and on Kiev's existing trade arrangements with ex-Soviet neighbors.

EU Trade Commissioner Cecilia Malmstrom highlighted the fact that all three parties jointly signed a statement that said the pact, which helped trigger the crisis between Moscow and Kiev 18 months ago, "will be provisionally applied as of Jan. 1, 2016".

She said Ulyukayev made no mention of delaying the accord, which was put off last year under pressure from Russia, nor of any demand to amend the agreement. She said there was also no mention of Russian retaliation. Moscow has in the past said it might cut off Ukraine's access to Russian markets.

"There were no threats," Malmstrom told reporters. "It was a very constructive atmosphere."

She acknowledged that Ukraine itself was still some way from fulfilling the EU's conditions for benefiting from all elements of the wide-ranging bilateral agreement but said it was making progress on passing required legislation and should be in a better position after another seven months of reforms.

Ukrainian Foreign Minister Pavlo Klimkin said after Monday's talks that the most important outcome was Russia's "understanding" that there would be no delay or amendments.

In their joint statement, the three delegations confirmed that experts would continue to meet and report back to ministers by July on progress toward resolving outstanding issues.

The trade talks have been part of a wider confrontation between Moscow and the West following its annexation of Ukraine's Crimea and support for separatists in eastern Ukraine.