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Class Information
Number: 560/25
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acid esters > Aromatic acid moiety > Nitrogen in acid moiety other than as nitroso or isocyanate (e.g., amino acid esters, etc.) > Carbamic acid > Polycarbamic
Description: Compounds wherein the acid radical contains more than one carbamic acid group, at least one of which is esterfied.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4480110 |
Process for the preparation of urethanes |
Oct. 30, 1984 |
| 4476317 |
Process for the production of methylenedicarbanilates |
Oct. 9, 1984 |
| 4474978 |
Preparation of carbamates |
Oct. 2, 1984 |
| 4469882 |
Process for the production of aromatic carbamates |
Sep. 4, 1984 |
| 4467106 |
Polyether/polyester glycol process |
Aug. 21, 1984 |
| 4459236 |
Preparation of 1-alkenyl isocyanates |
Jul. 10, 1984 |
| 4456745 |
Polyurethanes prepared from polycarbonates |
Jun. 26, 1984 |
| 4439553 |
High molecular weight aromatic amine scavengers and method of use |
Mar. 27, 1984 |
| 4439616 |
Tertiary aralkyl urethanes and isocyanates derived therefrom |
Mar. 27, 1984 |
| 4430505 |
Process for the preparation of N,O-disubstituted urethanes useful for the preparation of isocyanates |
Feb. 7, 1984 |
| 4430262 |
Preparation of isocyanates and/or derivatives thereof |
Feb. 7, 1984 |
| 4420306 |
Tetraacrylic and tetramethacrylic esters and dental materials containing same |
Dec. 13, 1983 |
| 4415745 |
Process for the preparation of aromatic carbamates and isocyanates |
Nov. 15, 1983 |
| 4400203 |
Substituted amino carboxyethyl haloacetamide herbicide antidotes |
Aug. 23, 1983 |
| 4398036 |
Preparation of N-monosubstituted carbamates |
Aug. 9, 1983 |
| 4388238 |
Process for the preparation of N,O-disubstituted urethanes suitable as a starting material for the preparation of isocyanates |
Jun. 14, 1983 |
| 4385171 |
Removal of unreacted diisocyanate from polyurethane prepolymers |
May. 24, 1983 |
| 4383826 |
Adducts of diisocyanates and methacryloyl alkyl ethers, alkoxybenzenes or alkoxycycloalkanes, compositions containing such compounds, and method of use thereof |
May. 17, 1983 |
| 4381403 |
Process for the preparation of N-monosubstituted carbamic acid esters |
Apr. 26, 1983 |
| 4381405 |
Process for the preparation of polymethylene polyphenyl polyisocyanate composition |
Apr. 26, 1983 |
| 4381404 |
Process for the production of N,O-disubstituted urethanes and use thereof as starting materials for the production of organic isocyanates |
Apr. 26, 1983 |
| 4379764 |
Phenylalanylarginine derivatives, process for producing same and method for measuring activity of enzymes using same |
Apr. 12, 1983 |
| 4375000 |
Process for the preparation of an aryl mono-, di-, and/or polyurethane |
Feb. 22, 1983 |
| 4369141 |
Process to improve isocyanate yield upon pyrolysis of a polyfunctional urethane which has been extracted with a combination of hydrochloric acid and alcohol |
Jan. 18, 1983 |
| 4353995 |
Novel catalyst system for polyurethane foams |
Oct. 12, 1982 |
| 4349471 |
Process for the preparation of aromatic sulphonic acid halides |
Sep. 14, 1982 |
| 4348331 |
Process for the preparation of N-substituted imido-dicarboxylic acid diaryl esters |
Sep. 7, 1982 |
| 4341898 |
Synthesis of isocyanates from nitroalkanes |
Jul. 27, 1982 |
| 4340749 |
Carpet treatment |
Jul. 20, 1982 |
| 4339592 |
Process for the production of urethanes |
Jul. 13, 1982 |
| 4337196 |
Method for producing 3,6-bis(carboethoxyamino)-2,5-diaziridinyl-1,4-benzoquinone |
Jun. 29, 1982 |
| 4335219 |
Process for reacting isocyanates in the presence of quaternary ammonium zwitterions |
Jun. 15, 1982 |
| 4334052 |
Rigid, non-cellular polyurethane modified with reaction product of an isocyanate and an alcohol |
Jun. 8, 1982 |
| 4334032 |
Foamed polymers containing low molecular weight urethane modifier compound |
Jun. 8, 1982 |
| 4328354 |
Preparation of methylene-bis-phenylcarbamic acid esters and polymethylene-polyphenylcarbamic acid esters |
May. 4, 1982 |
| 4324739 |
Dimethylamino derivatives and their use |
Apr. 13, 1982 |
| 4321402 |
Carbamate process |
Mar. 23, 1982 |
| 4319018 |
Process for producing polymethylene polyphenyl polycarbamates |
Mar. 9, 1982 |
| 4319035 |
Process for recycling noble metal catalysts used for the manufacture of aromatic urethanes |
Mar. 9, 1982 |
| 4307029 |
Process for preparing polymethylene-polyphenyl polyisocyanates |
Dec. 22, 1981 |
| 4304922 |
Process for the preparation of urethane |
Dec. 8, 1981 |
| 4303794 |
Separation and recovery of 4,4'-methylene dimethyl diphenyldicarbamate |
Dec. 1, 1981 |
| 4297501 |
Process for the preparation of urethanes |
Oct. 27, 1981 |
| RE30772 |
Amide-modified urethane acrylate radiation curable compounds and coating compositions and methods of making same |
Oct. 13, 1981 |
| 4293470 |
Stabilizing polyurea polymer polyols by treating with a secondary amine |
Oct. 6, 1981 |
| 4292254 |
Preparation of polyisocyanates from polycarbamates |
Sep. 29, 1981 |
| 4290970 |
Process for the manufacture of aromatic di- and/or polyisocyanates |
Sep. 22, 1981 |
| 4290968 |
Preparation of polyisocyanates from polycarbamates |
Sep. 22, 1981 |
| 4287083 |
Photoinitiation systems for free radical polymerization reactions |
Sep. 1, 1981 |
| 4287132 |
Preparation of polyisocyanates from polycarbamates |
Sep. 1, 1981 |
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