KR970707165A

KR970707165A - Cationic Polymer

Info

Publication number: KR970707165A
Application number: KR1019970703136A
Authority: KR
Inventors: 지안카를로 포르나사리; 지안지아코모 토리; 지오반니 카를루치
Original assignee: 레이서 제이코버스 코넬리스; 더 프록터 앤드 갬블 캄파니
Priority date: 1994-11-10
Filing date: 1995-11-13
Publication date: 1997-12-01
Also published as: ITTO940891A1; ITTO940891A0; CA2205026C; IT1267496B1; MX9703447A; AU4281996A; WO1996015154A1; EP0791015A4; EP0791015A1; JPH10509753A; CA2205026A1

Abstract

본 발명은 초흡수성을 갖고 4급 암모늄 그룹으로 치환되고 0.5이상, 바람직하게는 0.5 내지 0.25의 ds를 갖고 수 불용성이 유지되기에 충분한 가교결합된, 바랍직하게는 섬유 형태의 양이온성 폴리사카라이드에 관한 것이다. 폴리사카라이드는 바람직하게는 셀룰로스이다. 생성물중의 작용 그룹의 개수를 증가시켜 초흡수성을 개선시키는 반면 가교결합제를 사용하여 생성물의 겔 강도를 조절할 수 있고 보다 용이하게 생성물의 특성을 요구되는 정도의 특성으로 맞출 수 있다.The present invention is cationic polysaccharide in the form of crosslinked, preferably fibrous, superabsorbent and substituted with quaternary ammonium groups and having a ds of at least 0.5, preferably from 0.5 to 0.25 and sufficient to remain water insoluble. It is about. The polysaccharide is preferably cellulose. Increasing the number of functional groups in the product improves superabsorption, while crosslinking agents can be used to control the gel strength of the product and more easily tailor the properties of the product to the required degree of properties.

Description

Cationic Polymer

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims

A superabsorbent cationic polysaccharide substituted with quaternary ammonium groups and crosslinked to a degree sufficient to maintain water insolubility with a degree of substitution (ds) of at least 0.5.

The cationic polysaccharide according to claim 1, which is cellulose.

The cationic polysaccharide according to claim 1 or 2, which is in the form of a fiber.

The cationic polysaccharide according to any one of claims 1 to 3, wherein the quaternary ammonium group is derived from a quaternary ammonium compound of one of formulas (I) and (II):

Wherein n is an integer from 1 to 16; X is halogen; Z ⁻ is an inorganic or organic anion; R, R ¹ , R ² and R ³ may be the same or different and each is hydrogen or an organic radical; Or further R ² may be a group of formula (III) or (IV);

Wherein p is an integer from 2 to 10 and n, R, R ¹ , R ² , R ³ , X and Z are as defined above.

5. The cationic polysaccharide according to claim 4, wherein R, R ¹ , R ² and R ³ are each an alkyl, hydroxyalkyl, alkenyl or aryl group containing up to 10 carbon atoms.

6. The cationic polysaccharide according to claim 5, wherein R, R ¹ , R ² and R ³ are each hydrogen.

The method of claim 5 or 6, wherein the quaternary ammonium compound is selected from glycidyltrimethylammonium chloride; 2,3-epoxypropyl-N, N, N-trimethylammonium chloride; 3-chloro-2-hydroxypropyl-N, N, N-trimethylammonium chloride; 3-chloro-2-hydroxypropyl-N, N, N-dimethylethanolammonium chloride; And 1,3-bis- (3-chloro-2-hydroxypropyl-N, N-dimethylammonium) -N-propanedichloride.

The cationic polysaccharide according to any one of claims 1 to 7, wherein the crosslinking agent is a diepoxy compound or a haloepoxy compound.

9. The cationic polysaccharide according to claim 8, wherein said crosslinker is 1,3-bis (glycidyldimethylammonium) propane dichloride or epichlorohydrin.

The cationic polysaccharide according to any one of claims 1 to 9, having a ds of 0.5 to 2.5.

(i) reacting the polysaccharide with an excess quaternary ammonium compound containing at least one group capable of reacting with the polysaccharide hydroxy group to give a polysaccharide having a ds of at least 0.5, and simultaneously or subsequently (ii) reacting the induced polysaccharide with a crosslinking agent to crosslink to a degree sufficient to render the product insoluble in water.

The method of claim 11, wherein said polysaccharide is cellulose.

The method according to claim 11 or 12, wherein the polysaccharide is a fibrous polysaccharide.

The method according to any one of claims 11 to 13, wherein the quaternary ammonium compound is a compound of one of formulas (I) and (II):

Wherein n is an integer from 1 to 16; X is halogen; Z ⁻ is an inorganic or organic anion; R, R ¹ , R ² and R ³ may be the same or different and each is hydrogen or an organic radical; Or further R ² may be a group of formula (III) or (IV):

15. The method of claim 14, wherein R, R ¹ , R ² and R ³ are each hydrogen, alkyl, hydroxyalkyl, alkenyl or a group containing up to 10 carbon atoms.

The method of claim 15, wherein R, R ¹ , R ² and R ³ are each hydrogen.

The method of claim 15, wherein the quaternary ammonium compound is glycidyltrimethylammonium chloride; 2,3-epoxypropyl-N, N, N-trimethylammonium chloride; 3-chloro-2-hydroxypropyl-N, N, N-trimethylammonium chloride; 3-chloro-2-hydroxycrofill-N, N, N-dimethylethanolammonium chloride; And 1,3-bis- (3-chloro-2-hydroxypropyl-N, N-dimethylammonium) -N-propanedichloride.

The method of claim 11, wherein the crosslinker is a diepoxy compound or a haloepoxy compound.

19. The method of claim 18, wherein the crosslinker is 1,3-bis (glycidyldimethylammonium) propane dichloride or epichlorohydrin.

20. The method of any one of claims 11 to 19, wherein step (ii) is performed after step (i).

20. The molar ratio according to any one of claims 11 to 19, wherein the quaternary ammonium compound is 5: 1 to 40: 1, preferably 20: 1 to 40: 1 based on the saccharide units in the polysaccharide. Used as; Or the reaction is carried out in at least two stages, in which the molar ratio is from 10: 1 to 20: 1.

22. The method of any one of claims 11 to 21, wherein said induction and crosslinking reaction is carried out in the presence of a base.

The method of claim 22, wherein the base is an alkaline earth metal hydroxide or alkoxide.

The method of claim 23, wherein said base is sodium hydroxide.

Use of the cationic polysaccharide according to any one of claims 1 to 10 as an absorbent.

The use of claim 25 as an absorbent in hygiene and / or sanitary products.

※ Note: The disclosure is based on the initial application.