Reinforced polyvinyl alcohol hydrogels containing uniformly disp

Details Reinforced polyvinyl alcohol hydrogels containing uniformly disp Reinforced polyvinyl alcohol hydrogels containing uniformly disp

1992-12-14

1994-08-09

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428137, 428171, 428172, 428175, 428225, 428288, 428296, 428336, 428359, 428461, 428518, 524173, 524319, 524503, B05B 300, B29C 3502, B32B 500

Patent

active

053365518

ABSTRACT:
This invention provides reinforced composite structures consisting essentially of a matrix and a dispersed phase, where the matrix is a hydrogel containing water and a solubilized vinyl alcohol homopolymer, the dispersed phase contains a plurality of uniformly distributed acicular regions consisting of fibrils formed from a highly oriented crystalline vinyl alcohol polymer, where the diameter of the said fibrils is less than 1 millimeter, the aspect ratio of the fibrils is from 2:1 to 1000:1, and where the composite is characterized by a gradual transition in the degree of crystallinity at the interfaces between the matrix and the fibrils.

REFERENCES:
patent: 4663358 (1987-05-01), Hyon et al.
patent: 4851168 (1989-07-01), Graiver et al.
"Kobunshi Kako" 39(6) 304-10 (1990) (CA114(16):144304x).
"Kobunshi Ronbunshi" 46 (11) 673-80 (1989) (CA112(12):99763s).
"J. Controlled Release" 18(2), 95-100; (CA116(16):158711f).
R. Ofstead et al. in Adv. Chem. Ser., 223 (Polym. Aqueous Media), 61-72 (CA112(6):42493z).
"Kobunshi Ronbunshu" 47(12), 1001-4 (1990) (CA114(8):63302t).

Affiliated with

Also associated with

Rating

Reinforced polyvinyl alcohol hydrogels containing uniformly disp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reinforced polyvinyl alcohol hydrogels containing uniformly disp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reinforced polyvinyl alcohol hydrogels containing uniformly disp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-215194