EP 0600843 A1 19940608 - Breathable buoyant thermal insulating material.
Title (en)
Breathable buoyant thermal insulating material.
Title (de)
Luftdurchlässiges, schwimmfähiges, thermisches Isoliermaterial.
Title (fr)
Matériau isolation thermique perméable à l'air et flottant.
Publication
Application
Priority
US 98509692 A 19921130
Abstract (en)
This invention concerns a novel breathable, buoyant, thermal insulator material. The insulator material of the invention comprises an assemblage of: (a) from about 50 to 100% by weight of spun and drawn polymeric microfibers having a diameter of from about 2 to 14 microns; and (b) from about 0 to 50% by weight of synthetic polymeric binder fibers having a diameter of from about 12 to 50 microns, wherein the resulting assemblage has a density of from about 3.0 to 10.0 lb/ft<3>, and apparent thermal conductivity k measured by the plate to plate method according to ASTM C518 with a heat flow down of less than about 0.3 Btu.in/hr.ft<2>. DEG F in the dry condition, water absorption less than 50% of its dry weight when immersed for one hour at a depth of 2 ft. in fresh water at a temperature of 70 DEG F, a buoyancy greater than 40 lb/ft<3> after immersion for one hour at a depth of 2 ft. in fresh water at a temperature of 70 DEG F, and an intrinsic moisture vapor transfer rate of at least 100 times greater than that of a closed-cell foam according to Military Specification MIL-P-12420C, Type II, Class 6. <IMAGE>
IPC 1-7
IPC 8 full level
D04H 1/42 (2006.01); D04H 1/54 (2006.01); D04H 1/58 (2006.01); D06M 13/02 (2006.01); D06M 13/51 (2006.01); D06M 13/513 (2006.01); D06M 15/00 (2006.01); D06M 101/00 (2006.01); D06M 101/02 (2006.01); D06M 101/06 (2006.01); D06M 101/08 (2006.01); D06M 101/16 (2006.01); D06M 101/18 (2006.01); D06M 101/30 (2006.01); D06M 101/32 (2006.01); D06M 101/34 (2006.01)
CPC (source: EP US)
D04H 1/43828 (2020.05 - EP US); D04H 1/43832 (2020.05 - EP US); D04H 1/43835 (2020.05 - EP US); D04H 1/43838 (2020.05 - EP US); D04H 1/54 (2013.01 - EP)
Citation (search report)
- [A] EP 0088191 A2 19830914 - ICI PLC [GB]
- [A] US 4508775 A 19850402 - ADILETTA JOSEPH G [US]
- [A] DATABASE WPI Section Ch Week 68, Derwent World Patents Index; Class A, AN 68-42208Q
Designated contracting state (EPC)
BE DE DK FR GB NL SE
DOCDB simple family (publication)
EP 0600843 A1 19940608; AU 3313093 A 19940616; AU 661550 B2 19950727; BR 9301639 A 19940607; CA 2096092 A1 19940531; FI 930779 A0 19930222; FI 930779 A 19940531; JP H06228852 A 19940816; MX 9302181 A 19940630; NO 932069 D0 19930607; NO 932069 L 19940531; ZA 931437 B 19930922
DOCDB simple family (application)
EP 93850063 A 19930331; AU 3313093 A 19930218; BR 9301639 A 19930423; CA 2096092 A 19930512; FI 930779 A 19930222; JP 32594593 A 19931130; MX 9302181 A 19930415; NO 932069 A 19930607; ZA 931437 A 19930301