IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0328952
(1973-02-02)
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발명자
/ 주소 |
- Savage Albert B. (Midland MI)
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| 출원인 / 주소 |
- The Dow Chemical Company (Midland MI 02)
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| 인용정보 |
피인용 횟수 :
26 인용 특허 :
0 |
초록
▼
The invention consists of a composition of matter consisting of finely divided, high molecular weight, water-soluble polymeric material in intimate mixture with from one to four other components and a process for the preparation thereof. The invention composition is highly dispersible and rapidly so
The invention consists of a composition of matter consisting of finely divided, high molecular weight, water-soluble polymeric material in intimate mixture with from one to four other components and a process for the preparation thereof. The invention composition is highly dispersible and rapidly soluble in aqueous media without skinning and agglomeration and is useful as a flocculant and thickener in many industrial processes.
대표청구항
▼
A composition of matter comprising a finely divided, water-soluble cellulose ether, hereinafter polymeric material, of about 50,000 to about 10,000,000 average molecular weight, of a particle size predominantly larger than about 0.06 millimeter and less than about 1.7 millimeter, in intimate mixture
A composition of matter comprising a finely divided, water-soluble cellulose ether, hereinafter polymeric material, of about 50,000 to about 10,000,000 average molecular weight, of a particle size predominantly larger than about 0.06 millimeter and less than about 1.7 millimeter, in intimate mixture with components A, B, C and D, the combined weight of said components being from a small effective amount to about 10% of the weight of the polymeric material, wherein: Component A is a water-soluble polyol selected from the group consisting of lower aliphatic polyols of less than about 200 average molecular weight and lower polyalkylene glycols of from about 400 to about 9,000 average molecular weight, added in an amount of about 2% to about 8% of the weight of the polymeric material; Component B is a surface-active agent of from about 15 to about 40 HLB, added in an amount of about 0.1% to about 2% of the weight of the polymeric material, and is selected from the group consisting of: a. potassium and sodium salt of fatty acids, b. potassium and sodium salts of aryl- and alkaryl-carboxylic acids, c. potassium and sodium sulfonates of fatty acids and of fatty acid higher esters, d. potassium and sodium salts of aryl- and alkaryl-sulfonates and -disulfonates, e. potassium and sodium salts of higher alkanol and hydroxyalkaryl sulfates, and f. potassium and sodium salts of carboxylic acid substituted quaternary amines; Component C is a surface-active agent of about 15 to about 18 HLB, added in an amount of about 0.1% to about 2% of the weight of the polymeric material, and is selected from the group consisting of lower oxyalkylene ethers and polyesters of aliphatic polyols and polyol anhydrides and has an average molecular weight of about 200 to about 6,000; Component D is a nonionic surface-active agent of less than about 10 HLB, added in an amount of about 0.1% to about 2% of the weight of the polymeric material; provided that when the polymeric material is composed of more than about 90% of a material which hydrates with rapidity about equal to or less than that of polyacrylamide, then components C and D or either of them may be omitted and when so omitted said composition consists essentially of said water-soluble cellulose ether, Component A and Component B.
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