High performance absorbent particles and methods of preparation

Details High performance absorbent particles and methods of preparation High performance absorbent particles and methods of preparation

1994-08-01

1996-08-27

Willse, David H.

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604358, 428407, A61F 1315, B32B 2702

Patent

active

055495907

ABSTRACT:
A high performance absorbent particulate composition and a method of preparation in which non-colloidal solid filler core is substantially encapsulated within a bounding layer of hydrogel forming polymer is disclosed. In preferred embodiments, the size of the solid filler core is about 10 to about 1500 microns contributing about 20% to about 90% by weight of the composition. The particles of the present invention provide rapid absorption of a large volume of aqueous fluids. A wide range of performance properties are achieved through selection of the filler core and the polymer.

REFERENCES:
patent: Re32649 (1988-04-01), Brandt et al.
patent: Re33839 (1992-03-01), Chmelir et al.
patent: 3544500 (1970-12-01), Osmond et al.
patent: 3932322 (1976-01-01), Duchane
patent: 3935363 (1976-01-01), Burkholder et al.
patent: 3992558 (1976-11-01), Smith-Johannsen et al.
patent: 4058124 (1977-11-01), Yen et al.
patent: 4081402 (1978-03-01), Levy et al.
patent: 4093776 (1978-06-01), Aoki et al.
patent: 4135943 (1979-01-01), Morishita et al.
patent: 4217901 (1980-08-01), Bradstreet et al.
patent: 4239043 (1980-12-01), Gellert
patent: 4242251 (1980-12-01), Aishima et al.
patent: 4245005 (1981-01-01), Regnier et al.
patent: 4286082 (1981-08-01), Tsubakimoto et al.
patent: 4295987 (1981-10-01), Parks
patent: 4324247 (1982-04-01), Aziz
patent: 4333464 (1982-06-01), Nakano
patent: 4340706 (1982-07-01), Obayashi et al.
patent: 4342314 (1982-08-01), Radel et al.
patent: 4392908 (1983-07-01), Dehnel
patent: 4418163 (1983-11-01), Murakami et al.
patent: 4446261 (1984-05-01), Yamasaki et al.
patent: 4454055 (1984-06-01), Richman et al.
patent: 4467012 (1984-08-01), Pedersen et al.
patent: 4474852 (1984-10-01), Craig
patent: 4500670 (1985-02-01), McKinley et al.
patent: 4507438 (1985-03-01), Obayashi et al.
patent: 4535098 (1985-08-01), Evani et al.
patent: 4587308 (1986-05-01), Makita et al.
patent: 4634440 (1987-01-01), Widlund et al.
patent: 4646730 (1987-03-01), Schonfeld et al.
patent: 4655757 (1987-04-01), McFarland et al.
patent: 4666983 (1987-05-01), Tsubakimoto et al.
patent: 4683274 (1987-07-01), Nakamura et al.
patent: 4732968 (1988-03-01), Obayashi et al.
patent: 4735987 (1988-04-01), Morita et al.
patent: 4742086 (1988-05-01), Masamizu et al.
patent: 4771086 (1988-09-01), Martin
patent: 4777232 (1988-10-01), Heidel
patent: 4783510 (1988-11-01), Saotome
patent: 4795762 (1989-01-01), Diamantoglou et al.
patent: 4800103 (1989-01-01), Jeffs
patent: 4880870 (1989-11-01), Zimmermann et al.
patent: 4888238 (1989-12-01), Katz et al.
patent: 4914066 (1990-04-01), Woodrum
patent: 4944735 (1990-07-01), Mokry
patent: 4950264 (1990-08-01), Osborn, III
patent: 4952550 (1990-08-01), Wallach et al.
patent: 4977192 (1990-12-01), Martineu et al.
patent: 4992326 (1991-02-01), Dabi
patent: 5019063 (1991-05-01), Marsan et al.
patent: 5032425 (1991-07-01), Livsey et al.
patent: 5061259 (1991-10-01), Goldman et al.
patent: 5074856 (1991-12-01), Coe et al.
patent: 5078909 (1992-01-01), Shigeta et al.
patent: 5079004 (1992-01-01), Blank et al.
patent: 5082723 (1992-01-01), Gross et al.
patent: 5118719 (1992-06-01), Lind
patent: 5145906 (1992-09-01), Chambers et al.
patent: 5147343 (1992-09-01), Kellenberger
patent: 5147921 (1992-09-01), Mallo
patent: 5154713 (1992-10-01), Lind
patent: 5180622 (1993-01-01), Berg et al.
patent: 5180798 (1993-01-01), Nakamura et al.
patent: 5188899 (1993-02-01), Matsumoto et al.
patent: 5196456 (1993-03-01), Nguyen et al.
patent: 5196473 (1993-03-01), Valenta et al.
patent: 5230958 (1993-07-01), Dabi
patent: 5250642 (1993-10-01), Ahmed et al.
patent: 5258448 (1993-11-01), Mallo et al.
patent: 5264471 (1993-11-01), Chmelir
patent: 5286770 (1994-02-01), Bastioli et al.
patent: 5300358 (1994-04-01), Evers
Chemical Abstracts, vol. 88, p. 39, Nos. 88:51682y and 88:51683z, 1978.

Affiliated with

Also associated with

Rating

High performance absorbent particles and methods of preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High performance absorbent particles and methods of preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High performance absorbent particles and methods of preparation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1052898