摘要:
On procède à la coagulation de solutions de polyuréthanes segmentés afin de former des structures façonnées comprenant une enveloppe continue sans pore entourant une âme cellulaire.
摘要:
Solutions of segmented polyurethanes are coagulated to form shaped structures comprising a substantially continuous pore-free sheath surrounding a cellular core.
摘要:
Disclosed are novel crosslinked polymeric ammonium salts wherein in said salt: about 25 % or more of the groups which link ammonium nitrogen atoms are group Y wherein Y is an n-alkylene groups or alkyl substituted n-alkylene group, wherein said n-alkylene group has 7 to about 20 carbon atoms; zero to about 75 % of groups which links ammonium nitrogen atoms are group Z wherein Z is a hydrocarbylene radical containing 2 or more carbon atoms, said hydrocarbylene radical optionally containing one or more hydroxyl, ether, amino, thioether, keto, or silyl groups or heterocyclic rings; and about 25 % or more of the ammonium atoms are secondary ammonium atoms.
摘要:
A hetero-composite yarn useful in making garments comprises a combined biconstituent yarn and a companion yarn, wherein the biconstituent yarn comprises an axial core comprising a thermoplastic elastomeric polymer, and a plurality of wings attached to the core and comprising a thermoplastic, non-elastomeric polymer.
摘要:
A stretchable synthetic polymer fiber comprising an axial core formed from an elastomeric polymer, and two or more wings attached to the core and formed from a non-elastomeric polymer, wherein preferably at least one of the wings is mechanically locked with the axial core. The fibers can be used to form garments, such as hosiery. A spinneret pack for producing such fibers is also provided.