公开(公告)号：US3554686A

公开(公告)日：1971-01-12

申请号：US3554686D

申请日：1967-10-02

Applicant: COTTON PRODUCERS INST

Inventor： TOLGYESI WILLIAM S

IPC: D06M15/423 ,  D06M13/34

CPC classification number: D06M15/423

Abstract: A DURABLE-PRESS PROCESS FOR CELLULOSIC MATERIALS, A COPOLYMER IS FIRST FORMED IN A CELULOSIC MATERIAL BY COPOLYMERIZATION OF CONVENTIONAL POLYMER FORMED SUCH AS AN N-METHYLOL COMPOUND OR TRIAZIRIDINYLPHOSPHINE OXIDE WITH A REACTIVE POLYFUNCTIONAL COMONOMER SUCH AS UREA OR THIOUREA, WHICH REPRESSES THE ABILITY OF THE POLYMER FORMER TO CROSSLINK CELLULOSE, THE MATERIAL BEING CURED, PREFERABLY IN A SUBSTANTIALLY DRY SYSTEM, UNDER CONDITIONS SUCH THAT A COPOLYMER MATRIX IS FORMED IN THE CELLULOSE WITH RELATIVELY LITTLE OR NO CROSSLINKING OF THE CELLULOSE; AND THE CURED, COPOLYMER-BEARING MATERIAL IS SUBSEQNELTY TREATED IN LIQUID OR VAPOR PHASE WITH A CROSSLINKING AGENT SUCH AS DIHYDROXYDIMETHYLOLETHYLENE UREA WHICH REACTS BOTH WITH THE COPOLYMER AND THE CELLULOSE AND THEREBY UPON RE-CURING OF THE MATERIAL IMPARTS TO IT IMPROVED CREASE RETENTION AND WRINKLE RECOVERY WHILE PRESERVING ITS BREAKING STRENGTH AND ABRASION RESISTANCE TO A HIGH DEGREE.