Patent GB-1005048-A (GB)
Title: Organosilicon co-polymers
IPC: C08G77/26
Filed: 1964-04-23
Abstract: The invention comprises copolymers containing groups (1) <FORM:1005048/C3/1> , and (2) <FORM:1005048/C3/2> wherein Z is hydrogen or a hydrocarbon or amino-hydrocarbon group, R is a divalent hydrocarbon group free of aliphatic unsaturation and containing at least 3 carbon atoms between the N and Si atoms, R1 is a hydrocarbon or fluorohydrocarbon group free from aliphatic unsaturation, in which any F atom is separated by at least 3 C atoms from Si, a is 0, 1, or 2, R11 is a divalent or trivalent saturated alkyl or cycloalkyl group containing at least 2 C atoms, and b is 1 or 2, there being in the copolymer at least 1 amino group per 2 carboxyl groups. The copolymer may also contain groups (3) <FORM:1005048/C3/3> where c is 0, 1, 2 or 3.  The copolymers are prepared by adding a previously prepared carboxyorganosiloxane and/or a copolymer of units (2) and (3) to a solution in water of a hydrolyzable aminoorganosilane and stirring and warming (e.g. at 50-100 DEG  C.) till a homogeneous solution is obtained.  In examples, copolymers are prepared containing units from the following amino-organosilanes: H2N.C2H4.NH.(CH2)3.Si(OMe)3, H2N.CH2CH2.Si(OEt)3, H2N.(CH2)3.Si(Et)(OEt)2, H2N.CH(CH3)CH2.NH.(CH2)3Si(Et)(OMe)2 H2N.CH2CH2.NH(CH2)3Si(Me)2OMe, CH3.NH.(CH2)3Si(OMe)3, H2N.CH2CH2.NH.(CH2)3Si(OMe)2 CH2CH2CF3 CH3.NH.CH2CH2.NH.(CH2)3 Si(OMe)3, (CH3)2N(CH2)3Si(OMe)3, H2N.CH2CH2.NH.CH2CH(CH3)CH2 Si(OMe)3, H2N.(CH2)3 Si(OCH2CH2OCH3)3, H2N(CH2CH2.NH.(CH2)3 Si(OC3H7)3, H2N(CH2CH2NH)4(CH2)3 Si(OMe)3, C6H5.NH.C6H4Si(OMe)2 C6H4F, C6H11.NH.C6H10.Si(OMe)3, H2N.C6H4CH2.NH(CH2)3 Si(OMe)3, C6H5CH2NH.(CH2)3Si(OMe), H2NC6H4CH2NH(CH2)3 Si(OMe)3, and H2N.C6H10NH.(CH2)3Si(OMe)3, and the following carboxyorganosiloxane units: HOOC.CH(CH3)CH2.Si(CH3)O, HOOC.CH2CH2.SiO3/2,HOOC(CH2)3 Si(CH3)O HOOC.C10H20.Si(C6H4CH3)O, HOOC.C17H34.Si(C6H5)O, <FORM:1005048/C3/4> HOOC.C6H10.Si(C6H5)O, HOOC.C6H4CH2.SiO3/2, HOOC(CH2)2CH(COOH)(CH2)2 Si(C5H11)O, <FORM:1005048/C3/5> HOOC(CH2)3Si(CH2CH2CF2CF3)O, HOOC(CH2)3Si(C6H10F)O, HOOC.CH2CH2CH2.SiO3/2, HOOC(CH2)4Si(CH2C6H4F)O, HOOC(CH2)5Si(C3H7)O, and HOOC(CH2)4SiO3/2, and units of type (3): SiO, (CH3)3SiO1/2, C6H5SiO3/2, (CH3)2SiO, CH3(C6H5)SiO, (C5H5)2SiO, (C2H5)2SiO, and CF3CH2CH2(CH3)SiO. Uses:-protective coating for metals and glass, imparting wet strength to paper, controlling cell size in polyurethane foams.ALSO:Wet strength may be imported to paper by treating the pulp from which it is made with a water-soluble copolymer of an amino-organosiloxane and a carboxy-organosiloxane.  The copolymer contains units (1) Z2N-R-SiR'aO3-a/2 and (2) (HOOC)b R"-SiR'aO3-a/2 wherein Z is hydrogen or a hydrocarbon or aminohydrocarbon group, R is a divalent hydrocarbon group free of aliphatic un unsaturation and having at least 3 (atoms between N and Si, R' is a hydrocarbon or fluoro-hydrocarbon group free of aliphatic unsaturation, any F atom being separated by at least 2 C. atoms from Si, R" is a divalent or trivalent saturated alkyl or cycloalkyl group of at least 2 C. atoms, a is 0, 1 or 2, and b is 1 or 2, there being present at least one amino group per 2 carboxyl groups, and optionally (3) R'cSiO4-c/2 where c is 0, 1, 2 or 3.