公开(公告)号：US3801566A

公开(公告)日：1974-04-02

申请号：US3801566D

申请日：1971-06-15

Applicant: STAMICARBON

Inventor： ELMENDORP J ,  DE ROOIJ A

IPC: C07D201/16 ,  C07D41/06

CPC classification number: C07D201/16

Abstract: A PROCESS FOR RECOVERING E-CAPROLATAM FRO SOLUTIONS OF E-CAPROLACTAM AND SULPHURIC ACID AND SO3 IS DISCLOSED WHEREIN AMMONIUM DIHYDROGEN PHOSPHATE OR ALKALI METAL DIHYDROGEN PHOSPHATE IS ADDED TO THE LACTAM, SULPHURIC ACID SOLUTION AND THE SOLUTION THEN SUBJECTED TO EXTRACTION BY A SUBSTANTIALLY WATER IMMISCIBLE SOLVENT FOR THE LACTAM WHEREBY THE LACTAM IS EXTRACTED FROM THE SULPHURIC ACID SOLUTION AND THE LACTAM FREE SULPHURIC ACID SOLUTION CAN BE USED TO PROCESS ROCK PHOSPHATE TO GYPSUM AND PHOSPHORIC ACID AND THE PHOSPHORIC ACID BEING CONVERTED TO AMMONIUM OR ALKALI METAL DIHYDROGEN PHOSPHATE TO BE USED IN TREATING FURTHER SOLUTIONS OF LACTAM AND SULPHURIC ACID.

公开(公告)号：US3798298A

公开(公告)日：1974-03-19

申请号：US3798298D

申请日：1972-02-01

Applicant: STAMICARBON

Inventor： VAN KRIMPEN P ,  WETZLER V

IPC: D02J1/22 ,  D04H3/16 ,  D01F3/10

CPC classification number: D04H3/007 ,  D02J1/22 ,  D04H3/16

Abstract: A PROCESS AND AN APPARATUS FOR PREPARING A FIBRE FLEECE, IN WHICH A POLYMER MATERIAL IS SPUN INTO FILAMENTS WHICH ARE SUBSEQUENTLY SO COOLED THAT THE MAJOR PORTION OF THE POLYMER MATERIAL IS IN CRYSTALLIZED FORM, WHEREUPON THE FILAMENTS ARE HEATED TO A TEMPERATURE CLOSE TO THE MELTING POINT, LED OVER A CONTACT AREA, PENUMATICALLY STRETCHED AND SPREAD ON A CONVEYING SURFACE.

公开(公告)号：US3780084A

公开(公告)日：1973-12-18

申请号：US3780084D

申请日：1972-04-26

Applicant: STAMICARBON

Inventor： SCHAAFSMA S ,  HOFMAN J

IPC: C07C255/19 ,  C07C20060101 ,  C07C121/02

CPC classification number: C07C255/00

Abstract: OMEGA-CYANOALKANE CARBOXYLIC ACIDS ARE PREPARED IN THE HIGH YIELDS BY REACTING A 1-HYDROXYCYC LOALKYL PEROXIDE WITH THE CORRESPONDING ALKANONE AND HYDROGEN CYANIDE AT A REACTION MIXTURE PH OF BETWEEN ABOUT 3-6 IN THE PRESENCE OF A WATER SOLUBLE CUPROUS CYANIDE COMPLEX AS CATALYST IN THE DISCLOSED PROCESS.

公开(公告)号：US3770689A

公开(公告)日：1973-11-06

申请号：US3770689D

申请日：1971-01-21

Applicant: STAMICARBON

Inventor： VAN DER LOOS J ,  CLAASSEN P

IPC: C08G69/18 ,  C08L77/00 ,  C08G20/18

CPC classification number: C08G69/18 ,  C08L77/02 ,  C08L2666/02

Abstract: AN IMPROVED PROCESS FOR THE ANIONIC, CATALYTIC POLYMERIZATION OF LACTAMS WITH THE AID OF ONE OR MORE PROMOTERS IS DISCLOSED WHEREBY A POLYAMIDE POLYMER HAVING IMPROVED IMPACT RESISTANCE IS PRODUCED. THE POLYMERIZATION IS CARRIED OUT IN THE PRESENCE OF A POLYETHER WITH ETHERIFIED OH GROUPS AND WHICH IS SOLUBLE IN THE MOLTEN LACATAM REACTION MIXTURE.

公开(公告)号：US3767772A

公开(公告)日：1973-10-23

申请号：US3767772D

申请日：1971-10-18

Applicant: STAMICARBON

Inventor： SCHOLTEN J ,  SCHEIJEN W ,  GEUS J ,  NOBEL A

IPC: C01B21/26

CPC classification number: C01B21/265 ,  C01B21/26

Abstract: AN IMPROVED PROCESS FOR THE PREPARATION OF NITROGEN MONOXIDE FROM AMMONIA AND MOLECULAR OXGEN AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST SYSTEM CONTAINING COBALT OXIDE IS DISCLOSED WHEREIN THE EFFICIENCY OF THE CATALYST IS PERIODICALLY RESTORED BY INTERMITTENTLY DECREASING THE AMMONIA CONTENT OF THE GAS MIXTURE SUPPLIED TO THE REACTOR BY FROM ONE TO TEN PERC ENT BY VOLUME, EACH INTERMITTENT REDUCTION LASTING FROM ABOUT ONE TO ABOUT TEN MINUTES.

公开(公告)号：US3767758A

公开(公告)日：1973-10-23

申请号：US3767758D

申请日：1971-07-01

Applicant: STAMICARBON

Inventor： MARS P ,  DUYVERMAN C ,  GORGELS M

IPC: B01J23/00 ,  C01B21/14 ,  C01B21/00

CPC classification number: C01B21/1418

Abstract: SALTS OF HYDROXYLAMINE ARE PREPARED BY REDUCTION OF NITRIC ACID WITH HYDROGEN IN AN ACID MEDIUM AND A CATALYST CONTAINING A METAL FROM THE PLATINUM GROUP OF METALS AND AN ACTIVATOR SELECTED FROM THE GROUP OF METALS, INCLUDING COPPER, GERMANIUM, CADMIUM, INDIUM, TIN, GALLIUM, SILVER, ARSENIC, THALLIUM, ANTIMONY, GOLD MERCURY, LEAD AND BISMUTH. THE REACTION CATALYST EXHIBITS A HIGH SELECTIVITY AND CONVERSION.

公开(公告)号：US3767627A

公开(公告)日：1973-10-23

申请号：US3767627D

申请日：1971-12-07

Applicant: STAMICARBON

Inventor： SCHOEN L

IPC: C08G63/82 ,  C08G17/14

CPC classification number: C08G63/823

Abstract: AN IMPROVED PROCESS FOR THE PREPARATION OF POLYLACTONES HAVING BLOCKED END-GROUPS IS DISCLOSED WHEREIN A POLYLACTONE, A MIXTURE OF POLYLACTONES, OR A MIXTURE OF POLYLACTONE AND LACTONE MONOMER IS REACTED, IN THE PRESENCE OF A CATALYST, WITH AT LEAST ONE MODIFIER WHICH CONTAINS AT LEAST ONE ESTER GROUP NOT INCLUDED IN A LACTONE RING AND WHICH CARRIES NO REACTIVE HYDROGEN SUBSTITUENTS.

公开(公告)号：US3759887A

公开(公告)日：1973-09-18

申请号：US3759887D

申请日：1964-07-07

Applicant: STAMICARBON

Inventor： RANG H ,  KAARSEMAKER S

IPC: C08F2/00 ,  C08F10/00 ,  C08F1/60 ,  C08F3/04

CPC classification number: C08F10/00 ,  C08F4/28

Abstract: ETHYLENE POLYMERS ARE PREPARED BY POLYMERIZING ETHYLENE AT TEMPERATURES ABOVE 150*C. AND PRESSURES ABOVE 500 ATMOSPHERES WITH AN ORGANIC PEROXIDE OF THE FORMULA

(R-O-O)2-C
WHERE R IS TERTIARY ALKYL AND N IS AN INTEGER FROM 2 TO 5, OR WITH 2,2-BIS(4,4-DI(TERTIARY BUTYLPEROXY)CYCLOHEXYL) PROPANE.

公开(公告)号：US3758494A

公开(公告)日：1973-09-11

申请号：US3758494D

申请日：1971-12-23

Applicant: STAMICARBON

Inventor： SUVERKROPP G ,  REICHRATH W

IPC: C07C273/18 ,  C07C275/16 ,  C07D233/76 ,  C07D49/32

CPC classification number: C07D233/76 ,  C07C273/1854 ,  C07C275/16

Abstract: A PROCESS IS DISCLOSED WHEREBY 5-(4-AMIUNOBUTYL)-HYDANTOIN IS PREPARED BY THE LIQUID PHASE HYDROGENATION OF 5-(3-CYANOPROPYL)-HYDANTOIN OR A MIXTURE OF 5-(3-CYANOPROPYL)-HYDANTOIN AND 1-UREIDO-4-CYANOVALERAMIDE, IN THE PRESENCE OF AN INERT SOLVENT SUSPENSION OF A HYDROGENATION CATALYST.

公开(公告)号：US3754050A

公开(公告)日：1973-08-21

申请号：US3754050D

申请日：1971-02-24

Applicant: STAMICARBON

Inventor： DUYVERMAN C ,  MIESSEN J

IPC: C07C7/148 ,  C07C7/12

CPC classification number: C07C7/148 ,  C07C11/167 ,  C07C11/18

Abstract: ALLENES, ACETYLENE AND VINYL CYCLOHEXENES ARE REMOVED FROM CONJUATED DIOLEFINS BY ADSORPTION WITH A MIXTURE OF COPPER OXIDE AND ZINC OXIDE AT A TEMPERATURE BETWEEN 25*C. AND 175*C. .