IT1180236B - Procedimento migliorato per produrre pasta di legno impiegando un additivo di s-triazina e una pasta di legno e una carta migliorata contenente una s-triazina - Google Patents

Procedimento migliorato per produrre pasta di legno impiegando un additivo di s-triazina e una pasta di legno e una carta migliorata contenente una s-triazina

Info

Publication number: IT1180236B
Authority: IT; Italy
Prior art keywords: triazine; wood paste; improved; additive; paper containing
Prior art date: 1983-09-30

Application number

IT22893/84A

Other languages

English (en)

Other versions

IT8422893A0 (it

Inventor

G Graham Allan

Original Assignee

Melamine Chemicals Inc

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.)

1983-09-30

Filing date

1984-09-28

Publication date

1987-09-23

1983-09-30 Priority claimed from US06/537,876 external-priority patent/US4487656A/en

1984-09-28 Application filed by Melamine Chemicals Inc filed Critical Melamine Chemicals Inc

1984-09-28 Publication of IT8422893A0 publication Critical patent/IT8422893A0/it

1987-09-23 Application granted granted Critical

1987-09-23 Publication of IT1180236B publication Critical patent/IT1180236B/it

Links

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

Engineering & Computer Science (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Mechanical Engineering (AREA)
Paper (AREA)
Preparing Plates And Mask In Photomechanical Process (AREA)
Prostheses (AREA)

IT22893/84A 1983-09-30 1984-09-28 Procedimento migliorato per produrre pasta di legno impiegando un additivo di s-triazina e una pasta di legno e una carta migliorata contenente una s-triazina IT1180236B (it)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
US53792783A	1983-09-30	1983-09-30
US53792683A	1983-09-30	1983-09-30
US06/537,876 US4487656A (en)	1983-09-30	1983-09-30	Process for bleaching paper pulp using melamine as a viscosity stabilizer
US65175184A	1984-09-19	1984-09-19

Publications (2)

Publication Number	Publication Date
IT8422893A0 IT8422893A0 (it)	1984-09-28
IT1180236B true IT1180236B (it)	1987-09-23

Family

ID=27504668

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT22893/84A IT1180236B (it)	1983-09-30	1984-09-28	Procedimento migliorato per produrre pasta di legno impiegando un additivo di s-triazina e una pasta di legno e una carta migliorata contenente una s-triazina

Country Status (10)

Country	Link
AT (1)	ATA310984A (it)
BR (1)	BR8404914A (it)
DE (1)	DE3436015A1 (it)
FI (1)	FI74082C (it)
FR (1)	FR2552792B1 (it)
GB (1)	GB2148344B (it)
IT (1)	IT1180236B (it)
NO (1)	NO843919L (it)
NZ (1)	NZ209708A (it)
SE (1)	SE464031B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4230655A1 (de) *	1992-09-14	1994-03-17	Ciba Geigy	Verfahren zur Verbesserung von Weißgrad, Helligkeit und Farbort von Faserstoffen
DE4230656A1 (de) *	1992-09-14	1994-03-17	Ciba Geigy	Verfahren zur Verbesserung von Weissgrad, Helligkeit und Farbort von Füllstoffen und Pigmenten
CN115110329A (zh) *	2022-06-28	2022-09-27	中国制浆造纸研究院有限公司	一种降低漂白段纸浆中金属含量和灰分含量的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB600961A (en) *	1944-09-20	1948-04-23	Du Pont	Improvements in or relating to the impregnation of wood with urea-formaldehyde resins
BE566286A (it) *	1957-04-02
FR1281896A (fr) *	1960-09-07	1962-01-19	Westinghouse Electric Corp	Procédé de stabilisation d'isolation cellulosique en contact avec des diélectriques liquides
GB1500599A (en) *	1975-11-28	1978-02-08	Koppers Co Inc	Compositions for imparting fire retardance to wood

1984
- 1984-09-28 IT IT22893/84A patent/IT1180236B/it active
- 1984-09-28 GB GB08424540A patent/GB2148344B/en not_active Expired
- 1984-09-28 NO NO843919A patent/NO843919L/no unknown
- 1984-09-28 FR FR8415011A patent/FR2552792B1/fr not_active Expired
- 1984-09-28 BR BR8404914A patent/BR8404914A/pt unknown
- 1984-09-28 SE SE8404867A patent/SE464031B/sv not_active IP Right Cessation
- 1984-09-28 FI FI843831A patent/FI74082C/fi not_active IP Right Cessation
- 1984-09-28 NZ NZ209708A patent/NZ209708A/xx unknown
- 1984-10-01 AT AT843109A patent/ATA310984A/de not_active Application Discontinuation
- 1984-10-01 DE DE19843436015 patent/DE3436015A1/de active Granted

Also Published As

Publication number	Publication date
DE3436015A1 (de)	1985-05-02
BR8404914A (pt)	1985-08-20
FI843831A0 (fi)	1984-09-28
FI74082C (fi)	1987-12-10
DE3436015C2 (it)	1990-03-08
FI843831L (fi)	1985-03-31
SE8404867L (sv)	1985-03-31
SE464031B (sv)	1991-02-25
GB8424540D0 (en)	1984-11-07
SE8404867D0 (sv)	1984-09-28
GB2148344A (en)	1985-05-30
FR2552792B1 (fr)	1987-01-09
ATA310984A (de)	1991-11-15
FR2552792A1 (fr)	1985-04-05
NZ209708A (en)	1988-08-30
FI74082B (fi)	1987-08-31
NO843919L (no)	1985-04-01
GB2148344B (en)	1987-04-15
IT8422893A0 (it)	1984-09-28

Publication	Publication Date	Title
DK227284D0 (da)	1984-05-08	Cigaretmundstykke
IT1178815B (it)	1987-09-16	Vaglio particolarmente per paste utilizzate nelle fabricazione del la carta
DK227484A (da)	1984-11-10	Cigaretmundstykke
IT1169914B (it)	1987-06-03	Procedimento per distruggere scarti
IT1179083B (it)	1987-09-16	Trasduttore fotoelettrico
DK574284D0 (da)	1984-12-04	Cigaretmundstykke
MX158439A (es)	1989-01-30	Mejoras a composicion de una pasta dentifrica
GB2144927B (en)	1987-01-21	Unipolar machine with output transformer
ES533490A0 (es)	1985-10-16	Una composicion dentifrica
AT385198B (de)	1988-02-25	Zahnstocher
GB8401794D0 (en)	1984-02-29	Bleaching wood pulp
DK282484D0 (da)	1984-06-08	Cigaretmundstykke
DK574684D0 (da)	1984-12-04	Cigaretmundstykke
IT1180236B (it)	1987-09-23	Procedimento migliorato per produrre pasta di legno impiegando un additivo di s-triazina e una pasta di legno e una carta migliorata contenente una s-triazina
ES536753A0 (es)	1986-04-01	Una composicion de pasta de estampado
FI840138A0 (fi)	1984-01-16	Detergentblandning i partikelform
DK574384A (da)	1985-06-06	Cigaretmundstykke
DK574484D0 (da)	1984-12-04	Cigaretmundstykke
DK545984A (da)	1985-05-19	Cigaretmundstykke
KR850000064U (ko)	1985-02-27	어묵 형성기의 직립식 스크류
KR840007217U (ko)	1984-12-20	식품 상자의 손잡이
ES538199A0 (es)	1985-11-01	Perfeccionamientos en una pieza de artilleria
FR2548034B3 (fr)	1986-04-04	Cheval de bois - jouet articule
IT8348974A0 (it)	1983-09-14	Legno irraggiato
NO170054C (no)	1992-09-09	Tannstikker