GB1060983A – Process for the cyanoethylation of lignocellulose pulps having improved power factor
– Google Patents
GB1060983A – Process for the cyanoethylation of lignocellulose pulps having improved power factor
– Google Patents
Process for the cyanoethylation of lignocellulose pulps having improved power factor
Info
Publication number
GB1060983A
GB1060983A
GB20201/64A
GB2020164A
GB1060983A
GB 1060983 A
GB1060983 A
GB 1060983A
GB 20201/64 A
GB20201/64 A
GB 20201/64A
GB 2020164 A
GB2020164 A
GB 2020164A
GB 1060983 A
GB1060983 A
GB 1060983A
Authority
GB
United Kingdom
Prior art keywords
pulp
paper
parts
water
lignocellulose
Prior art date
1960-03-03
Legal status (The legal status 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 status listed.)
Expired
Application number
GB20201/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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.)
1960-03-03
Filing date
1964-05-14
Publication date
1967-03-08
1964-05-14
Application filed by General Electric Co
filed
Critical
General Electric Co
1967-03-08
Publication of GB1060983A
publication
Critical
patent/GB1060983A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
D21H11/20—Chemically or biochemically modified fibres
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
C08B11/00—Preparation of cellulose ethers
C08B11/02—Alkyl or cycloalkyl ethers
C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
C08B11/14—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with nitrogen-containing groups
C08B11/155—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with nitrogen-containing groups with cyano groups, e.g. cyanoalkyl ethers
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
H01B3/185—Substances or derivates of cellulose
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
H01B3/485—Other fibrous materials fabric
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
1,060,983. Cyanoethylating lignocellulose pulps. GENERAL ELECTRIC CO. May 14, 1964 [May 27, 1963], No. 20201/64. Heading C3A. [Also in Division D2] A process for the cyanoethylation of lignocellulose pulp to obtain a fibrous product which can be made into a cyanoethylated paper having an improved dissipation factor comprises the steps of mixing 100 parts of the pulp with 200 parts of water and 5 to 25 parts of an alkali metal hydroxide (which is preferably dissolved in the water), adding 10 to 30 parts of acrylonitrile and mixing for 2 hours at 15‹ to 25‹ C., terminating the reaction by dilution with water while the pulp still retains its fibrous character, filtering off the pulp from the diluted reaction mixture, and then washing the pulp with water to eliminate excess alkali until the pulp has a neutral pH. Acid is not used when washing the pulp. The product may contain about 1À0 to 3À0% of nitrogen. The washed pulp may be made into paper by any desired paper-making process. The reaction may be carried out in a digester. It is preferably carried out at a temperature not below 15‹ C. and preferably between 18‹ and 20‹ C. The temperature may be 5-10‹ C. when the acrylonitrile is added to the mixture of pulp and alkali solution. Paper made from pulp treated according to the invention may be used as a dielectric in electrical apparatus and has a lower dissipation factor than paper made from cyanoethylated pulp which has been acid washed.
GB20201/64A
1960-03-03
1964-05-14
Process for the cyanoethylation of lignocellulose pulps having improved power factor
Expired
GB1060983A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
US1251360A
1960-03-03
1960-03-03
US28316463A
1963-05-27
1963-05-27
Publications (1)
Publication Number
Publication Date
GB1060983A
true
GB1060983A
(en)
1967-03-08
Family
ID=31949645
Family Applications (2)
Application Number
Title
Priority Date
Filing Date
GB7664/61A
Expired
GB975188A
(en)
1960-03-03
1961-03-02
Process for the cyanoethylation of lignocellulose pulp
GB20201/64A
Expired
GB1060983A
(en)
1960-03-03
1964-05-14
Process for the cyanoethylation of lignocellulose pulps having improved power factor
Family Applications Before (1)
Application Number
Title
Priority Date
Filing Date
GB7664/61A
Expired
GB975188A
(en)
1960-03-03
1961-03-02
Process for the cyanoethylation of lignocellulose pulp
Country Status (2)
Country
Link
BR
(1)
BR6127243D0
(en)
GB
(2)
GB975188A
(en)
1961
1961-02-28
BR
BR127243/61A
patent/BR6127243D0/en
unknown
1961-03-02
GB
GB7664/61A
patent/GB975188A/en
not_active
Expired
1964
1964-05-14
GB
GB20201/64A
patent/GB1060983A/en
not_active
Expired
Also Published As
Publication number
Publication date
BR6127243D0
(en)
1973-01-18
GB975188A
(en)
1964-11-11
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