Porous sheet

Details Porous sheet Porous sheet

1984-02-09

1986-09-23

Lowe, James

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

264 41, 264DIG47, 524427, 524448, 524451, 524456, 524525, 524528, 524570, 524574, 524579, C08K 300

Patent

active

046136436

ABSTRACT:
A process for the preparation of soft porous sheets, comprises forming into a sheet a composition comprising (i) 40 to 80% by weight of an inorganic filler and (ii) 60 to 20% by weight of a polyolefin type thermoplastic elastomer composition comprising at least 50% by weight of a polyolefin type thermoplastic elastomer substantially free of a polar group, in which the tensile stress at a temperature of 25.degree. C. under 100% stretching (100% modulus) is 10 to 100 Kg/cm.sup.2, the elongation at break under stretching is at least 100% and the permanent strain under 100% stretching is less than 50% and up to 50% by weight of a thermoplastic plastomer, and stretching the sheet at a temperature lower than the softening temperature of the polyolefin type thermoplastic elastomer. A porous sheet obtained according to this process has a good combination of flexibility, air permeability and water resistance.

REFERENCES:
patent: 3649611 (1972-03-01), Okumura et al.
patent: 3843761 (1974-10-01), Bierenbaum et al.
patent: 3880966 (1975-04-01), Zimmerman et al.
patent: 3903234 (1975-09-01), Ikeda et al.
patent: 4024213 (1977-05-01), Honda et al.
patent: 4138459 (1979-02-01), Brazinsky
patent: 4472328 (1984-09-01), Sugimoto et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-766892