content_image/906359.jpg content_image/906358.jpg content_image/906354.jpg content_image/906356.jpg content_image/906357.jpg content_image/906355.jpg
iodonium salt selected from: 

<img src='content_image/906359.jpg'>

N-iminosulfonates selected from: 

<img src='content_image/906358.jpg'>

<img src='content_image/906354.jpg'>

disulfonates which is 

(wherein R is H, -CH$_{3 }$ or -C(CH$_{3}$ ) 3 ) bisarylsulfonyldiazomethane which is 

<img src='content_image/906356.jpg'>

(wherein R is H, -CH$_{3 }$ or -C(CH$_{3}$ ) 3 ) arylcarbonylarylsulfonyldiazomethane which is 

<img src='content_image/906357.jpg'>

wherein R is H, -CH$_{3 }$ or -C(CH$_{3}$h), 

and a mixture thereof, 

and said acid producing agent is contained in the composi› tion in an amount of 0.1 to 50 wt %. 

-continued 

<img src='content_image/906355.jpg'>

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