SU541907A1 - Paper weight - Google Patents

Description

(54)

PAPER MASS alkylphenol polysulfide, - possessed by: 1 sulfur with higher vapeignosgous, allows to improve the 1O-adhesive properties of rosin, since sulfur is selectively interacting with chromophores without entering into reefik with resin acids. Example 1, Composition of 85% sulfig (oh bleached cel-cellulose, diluted up to 35 ° LllP, 7% kaolin, 3% glue based on the extraction of clarified paracreselformaldehyde black paracresolpo; cobalt; 1: 1 modified; rosin and 3% sul7: (Lata aluminum. At the same time they prepare.) a lightweight paper pulp with 3% glue pa -.s-Tve extraction non-mafia-ian -cjH; corrugated narak.formaldehyde-block |; of extraction unclarified rosin. From the obtained paper pulp on the Rapid-Kettap apparatus The paper samples weighing 70 g / m are distinguished. After drying and conditioning, the degree of sizing and whiteness obtained are obtained. The paper sizes glued by various types of extraction rosin are used in gabl, 1, Example 2: Prepare paper mass, including 83% of sulphite-bleached cellulose, ground to 8.3% kaolin, 2.9% glue based on ecologically modified modified rosin in a clarified and unclarified version n5.8% aluminum sulfate. From the obtained bhuman-mash mass: a paper weighing 70 rand-ketgen apparatus is cast, After drying and air-conditioning, the degree of sizing to the seam of the paper is determined. Yokazagallen paper obtained in example 2, are given in table. 2, PRI me R 3, In a paper pulp, such as shuyu from 100% bleached pulp sulphite, a different amount of clemating agent based on clarified alkylphenol formaldehyde-block-prop nyl-phenolol sulphide modified extraction rosin, pH was introduced masses 4,6-4, 8 regulate aluminum sulfate. From the obtained paper pulp, paper weighing 70 g / m was cast on a Rapid-Ketgen apparatus. The paper was dried in 2 stages. The conditioning was carried out under standard conditions. Similarly, the grims of the sample were prepared using the modified, not clarified extraction rosin in the same quantities. The results of paper testing, glued with extraction rosin and clarified with extraction rosin, are presented in Table 3, 3, and M4. 2, and 3% white glue based on extraction clarified dodecylphenol-formaldehyde block dodecy is introduced. . ; f | enOla olisuli1zhdom kisiso pi and su (;) at aluminum to pb-4,5-4.7. From the mass of the mass, paper of the masses was cast (5 ° 70. For comparison, paper was massed. The mass contained: and as a primer on my extraction: 1.; A canccol clarified with white clay (according to the prototype). Results of castings testing are presented in Table 4. As can be seen from the t-face. Indicator-spruce sizing and whiteness of the paper that is pro.leena: иг1michesk.ki perceived by ekst, ektstankoy kanif.oly-s, significantly pl; e9: s; the same indicators are visually brightened by l./.fol. Optimal addition) after; - and base.; - l. of constructional slice — so-called rosin on -: ,, for 1s within 0.5--5%,. The best;, .-. comparison of the number of slugs Ra in 6y.iar-e pedele, according. The examples cited, as well as the results of industrial tests of the evidence; The technology for receiving paper pulp does not vary according to cpaBHeHiuo with previously known technology. The proposed paper weight; containing as a proc .: 1st ester-extraction extraction kaifo, clarified with sulfur-containing hydrogenphenol-formaldehyde compounds P; Allowed the quality of the paper and oikrat oaoho ..:.::; - K: Anno-Ann Fn

Table 1,

Glue Extraction rosin 1,5O Extraction clarified rosin

Extraction Modified Refined 2.0 Rosin

Glue

Extraction clarified modified rosin

Extraction modified unclarified rosin

Glue from extraction rosin-1

Power

Whiteness,%

sizing, mm

84,8

Table 2,

Sizing degree

White,

according to the indicator method, sec / mm

493

82.3

2.0

77.0

427

1.75

Table 3

49.3

77.2

0.25127 76.3 84.5