The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 1977
Filed:
May. 16, 1975
Applicant:
Inventor:
Norton A Cashen, Metairie, LA (US);
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604 / ; 8187 ;
Abstract
The instant invention relates to a method for the preparation and isolation of anhydrous crystalline dimethylolated methyl-, and ethyl carbamate by lyophilization. Further, the instant invention is a dimethylolated methyl-, and ethyl carbamate, the chemical entity of which consists of an increased formaldehyde to nitrogen ratio, which is essentially free of free formaldehyde. The dimethylol methyl-, and ethyl carbamates are represented by the general formula ROCON(CH.sub.2 OH).sub.n, with n being 2, and in which R is an aliphatic or modified aliphatic group.