Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-07-17
1995-03-14
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525386, 525394, 526264, 526265, 526314, 558270, C08F 814
Patent
active
053978463
ABSTRACT:
The invention relates to a process for preparing organic monomeric or polymeric compounds carrying tert-butyloxycarbonyl groups, wherein a monomeric or polymeric organic compound, which possesses at least one heteroatom with an acidic proton, such as an aliphatic or aromatic alcohol, an amide, imide or lactam, is reacted with di-tert-butyl dicarbonate in an inert solvent in the presence of about 0.01 to about 10 mol percent, relative to the compound to be converted, of a catalyst at a temperature from about 0.degree. to about 80.degree. C. The reaction solution can be used for further processing, or the reaction product can be isolated by evaporation of the solvent or by precipitation in water and drying. The compounds are preferably used in light-sensitive coatings.
REFERENCES:
patent: 4491628 (1985-01-01), Ito
patent: 4623705 (1986-11-01), Romano
patent: 5194629 (1993-03-01), Kuehn
D. L. Flynn et al., J. Org. Chem., 1983, 48, 2424-2426.
"A Convenient Method For The Preparation of 1-(tert-Butyloxycarbonyl)pyrrols"; Angewandte Chemie International Edition, Bd. 23, Nr. 4, Apr. 1984, Weinheim DE Seiten 296-297; G. Hoefle et al.
Buhr Gerhard
Eichhorn Mathias
Hoechst Aktiengesellschaft
Zitomer Fred
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