NL174344B - PROCESS FOR PREPARING A MIXTURE OF CATECHOL AND HYDROQUINONE. - Google Patents

PROCESS FOR PREPARING A MIXTURE OF CATECHOL AND HYDROQUINONE.

Info

Publication number: NL174344B
Authority: NL; Netherlands
Prior art keywords: catechol; hydroquinone; preparing; mixture
Prior art date: 1951-12-05

Application number

NLAANVRAGE7209868,A

Other languages

Dutch (nl)

Original Assignee

Brichima Spa

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1951-12-05

Publication of NL174344B publication Critical patent/NL174344B/en

Links

QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 title 2
YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 title 2
238000004519 manufacturing process Methods 0.000 title 1
239000000203 mixture Substances 0.000 title 1

Classifications

- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

Landscapes

Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Life Sciences & Earth Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Geology (AREA)
Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Emergency Lowering Means (AREA)

NLAANVRAGE7209868,A 1951-12-05 PROCESS FOR PREPARING A MIXTURE OF CATECHOL AND HYDROQUINONE. NL174344B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE1951A0014650 DE975231C (en)	1951-12-05	1951-12-05	Articulated cap connection

Publications (1)

Publication Number	Publication Date
NL174344B true NL174344B (en)

Family

ID=6923259

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
NLAANVRAGE7209868,A NL174344B (en)	1951-12-05		PROCESS FOR PREPARING A MIXTURE OF CATECHOL AND HYDROQUINONE.
NL88621D NL88621C (en)	1951-12-05

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
NL88621D NL88621C (en)	1951-12-05

Country Status (4)

Country	Link
DE (1)	DE975231C (en)
FR (1)	FR1067366A (en)
GB (1)	GB712963A (en)
NL (2)	NL88621C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE942322C (en) *	1954-03-16	1956-05-03	Ulrich Wichmann	Articulated connection of caps
US2915328A (en) *	1957-07-08	1959-12-01	Hugh Wood And Company Ltd	Bars for supporting the roof in mines and for like purposes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE481680A (en) *
BE475032A (en) *	1946-08-28
DE803992C (en) *	1949-07-03	1951-04-16	Wilhelm Reppel	Cap made of juxtaposed links for mining, especially longwall mining
DE801717C (en) *	1949-07-12	1951-01-22	Mannesmann Ag	Cap connector

0
- NL NLAANVRAGE7209868,A patent/NL174344B/en unknown
- NL NL88621D patent/NL88621C/xx active
1951
- 1951-12-05 DE DE1951A0014650 patent/DE975231C/en not_active Expired
1952
- 1952-12-02 FR FR1067366D patent/FR1067366A/en not_active Expired
- 1952-12-03 GB GB3066152A patent/GB712963A/en not_active Expired

Also Published As

Publication number	Publication date
FR1067366A (en)	1954-06-15
GB712963A (en)	1954-08-04
DE975231C (en)	1961-10-12
NL88621C (en)

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