SU416367A1 - - Google Patents

Description

The invention relate: to the methods of obtaining the block sonnolmer, the relative nl, nxc to K.iaccy nolnamindov or nolifemiramides.

A known method of obtaining a blocking sound blocker is that they get an effector containing 1 sleep groups capable of active: lactams, which are then subjected to a modem with lactam in the presence of an anionic mixture, and an anionic mixture is given. However, the well-known puppies are multi-stage and, in addition, it is difficult to choose rastorpteli for drying the second stage of the nropess - in the modem of the polymer with lactam.

In order to simplify the process, it is proposed to blunt it in one stage without isolating the polymer subjected to lactam.

The main way is that, first, Hc, C-Acpl-bis-lactams undergo an interaction with diamines or diols in a solution of lactam at 100-300 ° C in an inert atmosphere for 1 -10 hours, and then anionic is introduced into the reaction medium. catalyst and set the temperature to 140-180 ° C. At the same time, the lactam is fully frozen due to the active end groups of the polymer A formed in the first stage, which leads to the formation of a block copolymer.

2

The number of 15 end: .1x groups (two packs) in the polymer L, with the ability to activate the annotation of chromosomes, determines the structure of the gigantic oligomer. Prp available in the polymer. two actniih end groups, you can get bl (.) 1 -sopo.1.1.

Type B A-B, a, i palpchpn in on. Nomera L

O.1.NO aKTHiuioii - b.chock-sogyu.timery tpna BA. Gsguliropani; the number of active terminal groundwater nolomors A is achieved by sensing the initial reagents (K-anil-Ong-lak1amov l-dnampnly nnolop), it can be as high as 1 to 2. Sootnop11ns ns: -. pnym weight of the resulting nolme) and A. Full: And with a completely molecular molecular weight of HOPE-MOL :; 51 IM CilOTIlOHieHii NEXT

reagents.

The amount of lactam used to initiate the reaction of K, -acsn-bg; s-lactam with diamine diac dipolamine, is 5-90% of the total amount of feedstock reagents. As lactams, o6n compound is used. formulas

.MN- CO

Lj

R where R - aliphatic groups - (CH2) n-; p 3-11, or c - substituted derivatives of these compounds, as well as lactams containing heteroatoms in the cycle. As L, H-acyl-b "c-lactams, compounds of the general formula i - C W - UNOO-rj - / y (CH4 (CH,) j, where R is methyl-ene groups (CH2) t- (-10) or O-, m- or p-depilen; n 3-10. In particular, K, N-isophthalyl-, N, N-terephthalpl-, N, N- are used as M, N-acyl-bis-lactams adipinyl-, K, X-sebacinylbis-8-caprolactam, as well as N, N-isophthalyl-, N, N-terephthalil-, N, N-adipinyl-, N, N-ce6-CIPIL-, N, N-azelapil-bass -a-piperidi, etc. As diamines or diols, compounds of the general formula NHaRiNH or HO.RiOH are used: where Ri represents aliphatic groups - (CH2), g- (-10) or aromatic Rupp (o-, m- or p-phenylene, difepilep

N |

Similarly, in the case of diols, either polyesters or polyamidoesters are obtained. The reaction can also occur simultaneously in the two indicated directions.

Thus, according to the inventive method, polymer A is formed in the first stage of the process, which may be a polyamide, a polyamide ester or a polyester.

The amount of polymer A to be added to the block copolymer, containing groups capable of activating the anoin polymerization of lactams, depends on the amount of lactam used for the reaction and on the solubility of polymer A in the lactam.

Alkaline catalysts are used as apioic catalysts for the polymerization of lactams in an amount of 1-5 mol% based on the weight of the lactam, for example, patria, sodium hydride, patricane, RMgJ, AlRs, where R is alkyl.

The lactam, which is the solvent in the first stage of the process, when added to the reactive mixture of the alkaline catalyst (the second stage of the process) is polymerized in

I

00 ---- rNHRMCORiCO | t

--L-J tCHsV

(CH2) jr pvHRNHCO (CH2№HCOBiCOM (CH2) C (| j,

account of the terminal active groups of polymer A, which leads to the formation of a block sonolimer. Thus, in contrast to the known method for producing block copolymers, the proposed method eliminates the step of isolating polymer A containing active groups and combines the first and second stages in a single process.

The advantage of the proposed method is that it allows to obtain block copolymers in the block in the form of finished products, i.e. it opens up the possibility of making products from block copolymers by chemical molding, in which the feedstock are monomers, and the polymer is obtained in the form of the finished product.

Example 1. 0.82 g (0.0070 mol) of hexamethylemidiamip and 3.12 g (0.0087 mol) of K, N-isophthalyl-by-e-caprolactam are dissolved in 3.3 g of caprolactam at 140 ° C in medium argon and the reaction mixture is maintained at this

temperature for 3 hours with stirring. The control experiment established that during this time polyamide with a given viscosity of 0.42 dl / g in an amount, etc., has been formed, it may contain heteroatoms and have a branch. For example, hexamethylenediamine, piperazii, o-, lg-, or l-phenylenediamine, beisidine, 4,4-diaminodiphenylsulfide, 4,4-diaminodiphenylsulfopane, 4,4-diaminodiphenyl ether, 3,3-bis (4- aminophenyl) phthalide, 9,9-bis- (4-amylphenyl) fluore11 and the like, and, as diols, ethylene glycol, resorcin, pyrocatechin, hydroquinone, 4,4-dioxydine-propyl, fepolphthalein, 9,9-bcc- (4- hydroxyphenyl) fluorene, 4,4-dioxydiphepylsulfone, polyethylene glycols with different molecular weights, etc. Depending on the nature of the compound used and the conditions The reaction of the interaction of M, S - acyl-b ' s-lactams with diamines or diols in the first stage yields polymers of different structure. In the case of diamines, the reaction can proceed in two ways: either without opening the lactam cycle of L, L-acyl-bns-lactam with P1, heating of the lactam and forming a homopolyamide of the structure {NHRNHCORiCO, i (I direction), or with opening of the lactam ring resulting in to the formation of a mixed polyamide structure, NHRNHCO (CH2) "NHCO-RiCONH (CH2) (II direction)