* Euro zone shares down 0.9 percent
* Euro off day's high, up 0.2 percent on day
* European PMI data show busiest factories in more than 17 years
* U.S. tax reform delayed, vote possible on Friday
* Dollar down 0.1 percent
By Georgina Prodhan
LONDON, Dec 1 (Reuters) - European shares traded lower on Friday despite strong euro zone factory data, after a delay to a keenly awaited U.S. tax reform bill dented Asian trading and curbed appetite for the dollar.
Euro zone shares, which started to accelerate losses about half an hour before the release of the data, briefly touched a session low before stabilising down about 0.9 percent.
A purchasing managers' index showed that euro zone factories had their busiest month for over 17 years in November, even though they raised prices at the fastest rate in more than six years.
Forward-looking indicators suggested the momentum would continue to the end of 2017, capping what is expected to be the best year for euro zone economic growth in a decade .
"We have a two-faced market. Wall Street continues to run on hopes of fiscal reform while in Europe, the renewed strength of the euro is hurting the DAX which in turn is dragging all the other bourses to the downside," said Carlo Alberto De Casa, Chief Market Analyst at ActivTrades.
The single currency eased slightly from the day's highs of $1.1940 to trade at $1.1920. It was still up 0.2 percent on the day.
The gap between German 10-year and 30-year borrowing costs was at its tightest level since late August as a worse-than-expected euro zone inflation number on Thursday pushed back prospects for monetary policy tightening well into the future.
In the United States, the Senate postponed voting on the tax bill late on Thursday as legislators wrestled with problems on an amendment and then adjourned, leaving it unclear whether a decisive vote on the bill would occur on Friday.
"The market's main focus is now whether the tax bill will pass or not," said Yutaka Miura, a senior technical analyst at Mizuho Securities in Tokyo.
The MSCI World Index, which tracks stocks from developed economies, slid 0.2 percent. Japan's Nikkei had finished 0.4 percent higher, while MSCI's broadest index of Asia-Pacific shares outside Japan was nearly flat on the day.
The dollar index against a basket of six major currencies was 0.1 percent lower at 92.95 but poised to eke out some gains for the week, supported by oil prices, after OPEC and other major producers agreed to extend production curbs.
U.S. crude futures were up 28 cents, or 0.5 percent, at $57.67 a barrel. Brent crude futures added 37 cents or 0.6 percent to $63.01 a barrel. Brent rose for a third consecutive month in November.
"This outcome was widely expected, but its confirmation has removed a clear near-term downside risk to prices," said Gordon Gray, head of oil and gas equity research at HSBC.
Gold edged higher as the dollar eased but was still trading near the 3-1/2-week low touched in the previous session, with investors flocking to riskier assets. Spot gold was up 0.2 percent at $1,277.82 an ounce at 0927 GMT. (Additional reporting by Lisa Twaronite and Danilo Masoni, editing by Larry King)