Microporous laminate

Details Microporous laminate Microporous laminate

1979-10-22

1984-04-24

Spear, Jr., Frank A.

Liquid purification or separation

Filter

Material

55 16, 55158, 422 48, B01D 3100

Patent

active

044446624

ABSTRACT:
A laminate formed by the solvent casting of a two phase siloxane-polyarylene polyether block copolymer onto a suitable microporous substrate such as a microporous polypropylene film, to produce a gas permeable and blood compatible membrane having sufficient mechanical strength for use in blood oxygenators and gas separation devices. For use in blood oxygenators, implantable biomedical devices, blood sampling, analysis or purification devices and artificial membrane lungs for cancer therapy or lung disease therapy, the two phase block copolymers such as polysufone-polydimethylsiloxane block copolymer preferrably have molecular weights in the ratio 5,000/5,000 M.sub.n 's with a 45% volume fraction as polysulfone, or at least 50% volume fraction represented as siloxane. For use in gas separation devices, the molecular weights of the polysulfone-polydimethylsiloxane blocks may be varied from 1,500 to 100,000 or greater M.sub.n 's with 10 to 90% by weight siloxane, and from 90 to 10% by weight polysulfone, with a tensile modulus less than 100,000 psi and tensile elongation of at least 100%.

REFERENCES:
patent: 3539657 (1970-11-01), Noshay et al.
patent: 3767737 (1973-10-01), Lundstrum
patent: 4008047 (1977-02-01), Peterson

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-114652