SU1390284A1 - Method of treating cellulose-containing material - Google Patents

Method of treating cellulose-containing material Download PDF

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Publication number
SU1390284A1
SU1390284A1 SU864135780A SU4135780A SU1390284A1 SU 1390284 A1 SU1390284 A1 SU 1390284A1 SU 864135780 A SU864135780 A SU 864135780A SU 4135780 A SU4135780 A SU 4135780A SU 1390284 A1 SU1390284 A1 SU 1390284A1
Authority
SU
USSR - Soviet Union
Prior art keywords
ch
table
proposed
sample
mm hg
Prior art date
Application number
SU864135780A
Other languages
Russian (ru)
Inventor
Эдуард Имерихович Чупка
Владимир Иванович Кондратьев
Александр Николаевич Заказов
Израиль Львович Котляревский
Алевтина Сергеевна Занина
Александр Иванович Бобров
Софья Ильинична Шергина
Иван Егорович Соколов
Галина Васильевна Леонова
Александр Анатольевич Кирчанов
Original Assignee
Сибирский научно-исследовательский институт целлюлозы и картона
Институт Химической Кинетики Горения Со Ан Ссср
Центральный научно-исследовательский институт бумаги
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.)
Filing date
Publication date
Application filed by Сибирский научно-исследовательский институт целлюлозы и картона, Институт Химической Кинетики Горения Со Ан Ссср, Центральный научно-исследовательский институт бумаги filed Critical Сибирский научно-исследовательский институт целлюлозы и картона
Priority to SU864135780A priority Critical patent/SU1390284A1/en
Application granted granted Critical
Publication of SU1390284A1 publication Critical patent/SU1390284A1/en

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03Non-macromolecular organic compounds
    • D21H17/05Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals

Abstract

This invention relates to the pulp and paper industry and makes it possible to increase the durability of a material by improving its thermal and light resistance. A solution of aliphatic alkoxy diol is applied to the surface of the cellulose-containing material, for example paper. The consumption of alkoxydiol is 1-2% by weight of absolute dry fiber. Then the material is dried for 12-15 minutes at 40-50 seconds. 8 tab. (L

Description

oo so o

00 4

113902

The invention relates to the pulp and yarn industry and can be used in the preparation of cellulose-containing materials with a long life.

The aim of the invention is to increase the durability of the material by improving its thermal and lightfastness.

bones.

The essence of the invention is that according to the method of processing

cellulose-containing material by applying a solution of a polyhydric alcohol on its surface and then -15 glue drying as an aliphatic alcohol using aliphatic al. coxydiol of general formula

BUT

RI-C-CH-CH-CH-R-i,

I 1 1 ii I -j

Where

,, R ,,

. OH

RT - CfjHj .;

OH

3

n

25

 1-4.

The substance used is a colorless oily NV, an odorless toxic liquid with a boiling point under normal conditions of more than 200 ° C, 30

Example 1. 10 mg of aliphatic alkoxy diol is dissolved in 0.5 ml of 96% ethanol at a solution diluted with water to 2.5 ml. The resulting solution is applied to the surface of 35 pre-prepared air-dry castings (1 g) of bleached sulphate whole lulose obtained (Bratsk LPK) from softwood and hardwood (Kotlas CVK) .40

Castings are prepared as follows.

1 g of bleached sulphate pulp is placed in a homogenizer, 100 ml of water is poured and mixed for 5 MIN, the resulting suspension is poured into a Buchner funnel on a paper filter. After suction of water, the casting is dried for min at. After application of the additive, the sample is dried for 1215-min at. Thermal aging was carried out under conditions of circulation of heated air at 105 and 120 ° C for 72 hours. The reflection spectra were recorded on a spectrophotometer. As a criterion of heat resistance, PC — the number of yellowing is used; taking the PC of the sample without an additive as 100%.

The results (average of three parallel for each additive} are presented in Table 1 (for bleached sulphate pulp obtained from softwood) and Table 3 (for sulphate bleached pulp obtained from hardwood pulp type of wood), and in Table 2 - the proposed samples.,,.

Presented in table. 1 data shows that for samples of bleached sulphate pulp obtained from softwood, with additions of alkoxy diols (1 wt.%) Under conditions of artificial aging (20 ° С) yellowing is 15–25% less than the control sample. . The greatest stabilizing effect have, added-:

0

five

thirty

35 40

50

55

Ki A,

BUT,

and AE - 25, 25 and 22.5% of co45

12

responsibly.

With aging () sulphate bleached pulp obtained from hardwood, the stabilizing effect of alkoxydiols is 15-30%. The introduction of glycerol in the amount of 2% gives a smaller stabilizing effect (12.2%) compared with the proposed substance.

Example 2. Under the conditions of Example 1, a sample Jl of bleached pulp sulphate obtained from softwood was prepared with a concentration of additives of 1 and 2% to the air-dry casting box office. The tests are carried out analogously to example 1 at 105 ° C. The results of the experiments are presented in Table 4.

From the data obtained it follows that with artificial aging, the heat resistance of bleached pulp sulfate increases with an increase in the concentration of the additive from 1 to 2%. The greatest stabilizing effect (42.9%) is obtained with the addition of AZ, (2 wt%).

Example 3. Offset paper 1 containing 30% bleached sulphite pulp of the Krasnoyarsk pulp and paper mill, 50% bleached sulphate pulp of the Kotlas PBK and 20% bleached sulphate pulp of the Bratsk FCP in a composition is applied analogously to example I (1% by weight of air-dry sample paper) aliphatic alkoxydiols AZ, and A 5- The results of the experiments are presented in Table I. five.

The results show that in the presence of additives AZ and A5 the yellowing of paper under artificial conditions

heat stress is 25–55% less than the control sample

Example 4. 10 mg of aliphatic alkoxy diol is dissolved in 0.5 ml of 96% ethanol at 25 ° C and diluted with water to 25 ml. The resulting solution is applied to the surface of the casting (1 g) of thermomechanical "pulp prepared according to GOST. After applying the solution, the samples are dried for 10-35 minutes at 40-50 ° C and pressed under a pressure of 20 kg / cm. Aging of wood pulp samples is carried out in a temperature-controlled chamber (t 25 C) when irradiated with light of a DRSh-250 mercury lamp through a light filter. NS-1 (A 330 nm) for three hours, the power of the light flux of 45 mW / cm. The reflection spectra are recorded on an SF-18 spectrophotometer. As a lightfastness criterion, PC is used - the number of yellowing. PC control sample is taken as 100%.

The lightfastness test of thermo-mechanical wood pulp was carried out taking into account the stage of after-effect (changes in whiteness are recorded immediately after exposure to light and after storage; irradiated samples for 2 months}. The results of these tests are presented in Table 6, in Table 7 - the proposed samples.

From these results table. 6 it follows that the proposed treatment at a 1% consumption of alkoxydioles increases the light resistance of thermomechanical mass samples by 12-14% under conditions of artificial intensive aging for 3 hours, and for a full aging cycle the effect of light stabilization is 20-22%. With the introduction of these additives, the whiteness of the samples

5-6% in the region of 400 nm. With an increase in the concentration of additives to 2%, the light resistance of the samples increases by 22–30% at the light stage and by 25–44% for the full aging cycle.

Example 5. Under the conditions of example 4, the treatment is carried out with monoalkyl ethers of triols Tj and T, which are applied in an amount of 1 wt.% To samples of the book and journal paper of the Syktyvkar Forestry Complex, containing 75% of thermomechanical pulp and 25% of sulfate hardwood pulp in its composition. .. The results are presented in Table. eight.

Presented in table. 8 data shows that the light fastness of a book-journal paper in the presence of Tz and T additives increases by 18–19% as compared with a control sample at the light stage under conditions of intensive artificial aging and by 20-26% due to a full cycle of lightning .

Claims (1)

  1. Invention Formula
    The method of treating cellulose-containing material by applying a solution of a polyhydric alcohol and its subsequent dog to its surface,. characterized in that, in order to increase the durability of the material by improving its thermal and light resistance, an aliphatic alkoxy-diol of the general formula is used as a polyhydric alcohol
    Nz
    I -s-CH-CH -CH-RZ
    OR2 OH OH
    where r ,, r
    2
     3 - n 2p + 1
    Control
    120
    Proposed AI
    120
    86.0
    72.7
    4.0
    100.0
    87.0
    75.5
    3.0
    75.0
    120 120 120 120
    Note, R + jo R 420 is the reflection coefficient in the region of 420 nm
    original sample and after aging for 72 hours, respectively.
    Sample
    I
    Sample formula
    CHj
    SI and C -
     uh
    X
    .
    ONON
    CH CH, CH-CH
    onon
    with - CH-CHj - CH-CH3
    CH,
    Onon
    CH3, —CHj — CH - (CH2) c — CH3 1.4563. J46, -5
    (2 mm Hg)
     n /
    CH,
    HE
    CtH.jf
    I //
     with —CH —sn, —CH — CH
    nl is the refractive index at t 20 ° С.
    Extension of the table. one
    75.5 75.2 74.5 76.8
    3.1 3.5 3.0 3.0
    77.5 87.5 85.0 75.0
    table 2
     HS (kip.)
    D
    CH 3
    , 4470; 98.5 (2 mmHg, Art.)
    , 4580 125 (1.5 mm Hg)
    J, 4570 09 (1 mm Hg)
    ONSN,
    CH
    1.4600 140 (1 mm
    Hg)
    Control- (without processing)
    Proposed
    Control
    Proposed
    BUT,
    105
    Table 3
    88.5 74.7 3.7
    300.0
    Table 4
    87.5 80.7 3.40 J00.0
    Control
    105
    Proposed
    Note 440
    fso
    MO 440
    R
    - reflection coefficient in area 440
    sample, after light aging for three hours and for the full aging cycle (after the after-effect stage), respectively
    Table 5
    70.0 75.5 2.7
    100.0
    - reflection coefficient in area 440
    Table 8
SU864135780A 1986-10-17 1986-10-17 Method of treating cellulose-containing material SU1390284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU864135780A SU1390284A1 (en) 1986-10-17 1986-10-17 Method of treating cellulose-containing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU864135780A SU1390284A1 (en) 1986-10-17 1986-10-17 Method of treating cellulose-containing material

Publications (1)

Publication Number Publication Date
SU1390284A1 true SU1390284A1 (en) 1988-04-23

Family

ID=21263279

Family Applications (1)

Application Number Title Priority Date Filing Date
SU864135780A SU1390284A1 (en) 1986-10-17 1986-10-17 Method of treating cellulose-containing material

Country Status (1)

Country Link
SU (1) SU1390284A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6395395B1 (en) 1992-08-17 2002-05-28 Weyerhaeuser Company Method and compositions for enhancing blood absorbence by superabsorbent materials
US6425979B1 (en) 1992-08-17 2002-07-30 Weyerhaeuser Company Method for making superabsorbent containing diapers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Целлюлоза, бумага и картон. Реферативный сб. - М., 1980, № 7, с. 1- 48. Tappi, 1969, vol. 52, № 6, p. 1070-1074. Фл те Д.М. Свойства бумаги. - M.J 1976, с. 408. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6395395B1 (en) 1992-08-17 2002-05-28 Weyerhaeuser Company Method and compositions for enhancing blood absorbence by superabsorbent materials
US6425979B1 (en) 1992-08-17 2002-07-30 Weyerhaeuser Company Method for making superabsorbent containing diapers

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