A continuous process for the production of concentrated resistant aqueous solutions of urea, formaldehyde and urea formaldehyde condensation products - -

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  机译： 一种耐甲醛，尿素和尿素甲醛缩合产物的浓缩水溶液的生产方法--

• 4. A method for the production of resistant aqueous concentrated solutions of formaldehyde, urea and formaldehyde condensation products of urea - - [P] . 德国专利： DE000001593053A . 1973-05-10

  机译： 一种耐甲醛，尿素和尿素甲醛缩合产物的浓缩水溶液的生产方法--

• 5. A method for the production of resistant aqueous concentrated solutions of formaldehyde, urea and formaldehyde condensation products of urea - - [P] . 德国专利： DE1593053B1 . 1973-05-10

  机译： 一种耐甲醛，尿素和尿素甲醛缩合产物的浓缩水溶液的生产方法--

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