CN1011512B - Modifying process for rosin - Google Patents
Modifying process for rosinInfo
- Publication number
- CN1011512B CN1011512B CN 88107962 CN88107962A CN1011512B CN 1011512 B CN1011512 B CN 1011512B CN 88107962 CN88107962 CN 88107962 CN 88107962 A CN88107962 A CN 88107962A CN 1011512 B CN1011512 B CN 1011512B
- Authority
- CN
- China
- Prior art keywords
- rosin
- present
- modifying process
- summers
- sizing
- Prior art date
- 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
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Abstract
The present invention relates to a modifying process for rosin. In order to increase the heat-resisting stability of rosin size and solve the problem that the sizing is difficult in paper-making industries in summers, the present invention adopts a natural oxidation process. The rosin size manufactured by the modified rosin obtained by the process has high heat resistance, and the present invention can satisfy the sizing requirements in summers. The present invention has the advantages of simple manufacturing process, the easy control of quality, low cost and convenient generalization and application.
Description
The present invention relates to a kind of modifying process for rosin.
Rosin (C
19H
2, the COOH) gum rosin of making through saponification, emulsification is the widely used sizing agent of China's paper industry.Because gum rosin can condense more than 35 ℃, reduces and even loses sizing efficiency, so, in applying glue in summer instability usually, influence paper.In order to improve the heat-resistant stability of gum rosin, solve applying glue in summer problem, some producer once adopted the method for adding auxiliary agent, as adopting casein, gelatin, carboxy methyl cellulose, stearic acid, paraffin etc., its resistance toheat is made moderate progress, but fail thoroughly to deal with problems.In rosin, add the maleated rosin that maleic anhydride is made, once on probation in many producers, but owing to use inconvenience, the cost height fails to apply.In recent years, dispersion rosin size in test, its heat-resistant stability are also not really desirable.
Directly do not used natural rosin abroad now, and widely-used modified rosin, good heat resistance is wherein also arranged, for example, the method that United States Patent (USP) U.S.4148665 is introduced, be with raw materials such as maleated rosin, toluene, sodium naphthalene sulfonate, potassium hydroxide, make 35% modified rosin latex solution through series reaction.Japan publication spy opens clear 56-79152, be to be emulsifying agent with epoxy fatty amide vitriol, reactions such as rosin and tosic acid, formaldehyde are obtained derivative, again with emulsifying agent emulsification etc., these methods are the raw material costliness mostly, complex process, the production cost height is applied a lot of difficulties of existence in China.
Task in invention is a problem of using gum rosin to exist in the applying glue in summer at paper industry, and a kind of modifying process for rosin is provided, and to improve the heat-resistant stability of gum rosin, solves its difficulty in the applying glue in summer.
Technical scheme of the present invention: a kind of natural oxidation method of this genealogy of law, have enough specific surface areas for making rosin, can fully contact with air, with the rosin fragmentation, be crushed to below 0.8 millimeter, earlier then in 27～37 ℃ of stackings, the heap height is 30～50 centimetres, lasts 5～7 days, and the glue test is endured in sampling, after qualified, the rosin powder is loaded in the container, under 42～45 ℃, through 18～24 hours, the automatic clinkering of rosin powder becomes translucent block rosin, is modified rosin, can use for enduring glue.
As paper mill modification voluntarily, can clinkering, but need with making with of, unsuitable stored for a long time.
Advantage of the present invention:
(1) gum rosin of making by the rosin of this law modification has good thermotolerance, under 45 ℃, through not condensing more than 48 hours, can satisfy the requirement of applying glue in summer.
(2) this law technology is simple, and quality is easy to grasp, and all modifications voluntarily of large, medium and small all kinds of paper mills are easy to utilize.
(3) this method is with low cost.
Embodiment 1: 1000 kilograms of rosin, and fragmentation is milled to below 0.8 millimeter through pulverizer, is stacked in 28～32 ℃ the air-conditioning room, pile highly 40 centimetres, last 5 days, sampling is endured the glue test by following method: in 1000 ml beakers, add 100 milliliters in water, soda ash 12 grams boil dissolving.Get rosin sample 100 gram, add in the above alkali lye, endured 1.5 hours in 98～102 ℃ again, make saponification liquor, began 30 minutes, control rate of heating well, prevent to overflow in saponification.In 3000 ml beakers, add 500 milliliters of 90 ℃ of hot water then, stir on the limit, and the limit adds saponification liquor 80 grams gradually, when treating that solution becomes milk yellow, adds 1400 milliliters of cold water rapidly, stir evenly free rosin size.Get 200 milliliters of gum rosins and place water bath with thermostatic control, under 45 ℃, be incubated 24 hours, take out and observe, as there not being precipitation, it is qualified to be, and as producing cohesion, precipitation, should continue to stack, and try next day again.After the assay was approved, the rosin powder is contained in the metal bucket, places under 42 ℃, after 6 hours, add colophonium powder one time, after 12 hours, obtain qualified block rosin again.
Embodiment 2: 500 kilograms of rosin, fragmentation is crushed to below 0.8 millimeter, is stacked in 33～36 ℃ the environment, pile high 50 centimetres, last 6 days after, according to the method for embodiment 1 after the assay was approved, i.e. packing is for enduring the glue use.
Claims (1)
1, a kind of modifying process for rosin, the rosiny structural formula is: C
1, H
2, COOH is characterized in that, with the rosin fragmentation, be crushed to below 0.8 millimeter, then in 27～37 ℃ of stackings, the heap height is 30～50 centimetres, lasts 5～7 days, sampling, endure the glue test, after qualified, the rosin powder is loaded in the container, under 42～45 ℃, through 18～24 hours, rosin powder clinkering voluntarily became translucent block rosin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107962 CN1011512B (en) | 1988-11-14 | 1988-11-14 | Modifying process for rosin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107962 CN1011512B (en) | 1988-11-14 | 1988-11-14 | Modifying process for rosin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042727A CN1042727A (en) | 1990-06-06 |
| CN1011512B true CN1011512B (en) | 1991-02-06 |
Family
ID=4834859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88107962 Expired CN1011512B (en) | 1988-11-14 | 1988-11-14 | Modifying process for rosin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011512B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2790404B2 (en) * | 1993-03-26 | 1998-08-27 | 隆太郎 木下 | Method for producing hydrogenated rosin |
| CN1100103C (en) * | 1998-05-12 | 2003-01-29 | 大连轻工业学院 | Reaction-type neutral rosin resin |
| CN104031559A (en) * | 2014-06-29 | 2014-09-10 | 柳江县联华纸制品厂 | Method for preparing oxidized rosin |
-
1988
- 1988-11-14 CN CN 88107962 patent/CN1011512B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1042727A (en) | 1990-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
International patent classification (main classification): C09F1/04 |