IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0548210
(2000-04-13)
|
발명자
/ 주소 |
- Anderson, Stewart C.
- Miller, Wayne P.
|
출원인 / 주소 |
- H. B. Fuller Licensing & Financing Inc.
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
18 |
초록
▼
The present invention relates to a crosslinked aqueous solution polymer composition consisting of about 15 wt-% to about 50 wt-% of at least one water soluble monomer, preferably an alpha, beta-ethylenically unsaturated carboxylic acid monomer and a crosslinking agent. The polymer solution is suffic
The present invention relates to a crosslinked aqueous solution polymer composition consisting of about 15 wt-% to about 50 wt-% of at least one water soluble monomer, preferably an alpha, beta-ethylenically unsaturated carboxylic acid monomer and a crosslinking agent. The polymer solution is sufficiently low enough in viscosity such that it can be applied in aqueous form, yet after crosslinking possesses a fast rate of acquisition and is high absorption capacity. The invention also relates to new methods of enhancing the absorbency of various articles, increasing the humectancy and/or absorbency of a fiber or fibrous matrix, improving the water retention of soil and other agricultural methods, and increasing the open time of cement by incorporating or applying an aqueous superabsorbent polymer composition.
대표청구항
▼
1. An aqueous composition comprising: a homopolymer derived from an α-β-ethylenically unsaturated carboxylic acid monomer, said homopolymer having been from about 75% to 95% neutralized with a base selected from the group consisting of alkali metal hydroxide, alkaline earth metal hydroxide and co
1. An aqueous composition comprising: a homopolymer derived from an α-β-ethylenically unsaturated carboxylic acid monomer, said homopolymer having been from about 75% to 95% neutralized with a base selected from the group consisting of alkali metal hydroxide, alkaline earth metal hydroxide and combinations thereof, said homopolymer having been further neutralized with a volatile base to a pH of at least 7; and crosslinking agent, said composition comprising from about 20% by weight to about 40% by weight solids and having a viscosity of from about 100 cPs to about 2500 cPs at 25° C. 2. The aqueous composition of claim 1, wherein said α-β-ethylenically unsaturated carboxylic acid monomer is selected from the group consisting of methacrylic acid, crotonic acid, maleic acid, maleic acid anhydride, itaconic acid, and fumaric acid. 3. The aqueous composition of claim 1, wherein said α-β-ethylenically unsaturated carboxylic acid monomer comprises acrylic acid. 4. The aqueous composition of claim 1, wherein said alkali metal hydroxide is selected from the group consisting of sodium hydroxide, potassium hydroxide and mixtures thereof. 5. The aqueous composition of claim 1, wherein said alkaline earth metal hydroxide comprises calcium hydroxide. 6. The aqueous composition of claim 1, wherein said volatile base comprises ammonium hydroxide. 7. The aqueous composition of claim 1 having a pH of from 7 to about 10. 8. The aqueous composition of claim 1, wherein said crosslinking agent comprises ammonium zirconyl carbonate. 9. The aqueous composition of claim 1, wherein said composition, when dry, absorbs at least 50 times its polymer weight in water. 10. An aqueous composition comprising: a polymer derived from monomers consisting of water soluble α-β-ethylenically unsaturated carboxylic acid monomers, said polymer having been from about 75% to 95% neutralized with a base selected from the group consisting of alkali metal hydroxide, alkaline earth metal hydroxide and combinations thereof, said polymer having been further neutralized with a volatile base to a pH of at least 7; and a crosslinking agent, said composition comprising from about 20% by weight to about 40% by weight solids and having a viscosity of from about 100 cPs to about 2500 cPs at 25° C. 11. The aqueous composition of claim 10, wherein said α-β-ethylenically unsaturated carboxylic acid monomers are selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, maleic acid, maleic acid anhydride, itaconic acid, fumaric acid and combinations thereof.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.