Hydrophilic foam

Details Hydrophilic foam Hydrophilic foam

1986-01-02

1987-02-17

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521137, 521159, C08G 1814

Patent

active

046440186

ABSTRACT:
MDI-based prepolymers are blown with a substantially nonaqueous blowing agent, such as pressurized air, and polymerized with stoichiometric amounts of polyoxyethylene polyol having at least two hydroxyl equivalents per mole, yielding a hydrophilic foam. The present foams may be extruded, knife-coated or otherwise cast into sheets, or may be fabricated by other known foam preparation techniques. Because the foam is polymerized with polyoxyethylene polyol instead of water, the foam exhibits both superior drape and improved stretch and recovery as compared with prior-art MDI-based flexible foams formed with aqueous reactants. The foam is particularly suited for use in external biomedical applications as, for example, a laminated medical/surgical dressing in which a thin sheet of the hydrophilic foam adheres to a nonstick aluminized veil on one side.

REFERENCES:
patent: 3890254 (1975-06-01), Guthrie et al.
patent: 4049592 (1977-09-01), Marans et al.
patent: 4132839 (1979-01-01), Marans et al.
patent: 4365025 (1982-12-01), Murch et al.

Affiliated with

Also associated with

Rating

Hydrophilic foam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrophilic foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrophilic foam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1938598