摘要:
Fibrous substrates with exacted properties are copolymer prepared by reacting an Si-H bearing polysiloxane with a compound containing both a hydrosilylatable group and an isocyanate reactive group, followed by reaction with di- or polyisocyanate used at or below the stoichiometric amount of NCO groups.
摘要:
Defoamer compositions of high effectiveness containing at least one siloxane-based antifoam and polysiloxane copolymers obtained by coupling a polysiloxane bearing active-hydrogen-containing hydrophilic polymer moieties by means of a di- or polyisocyanate.
摘要:
Cellulosic substrates are treated with compound(s) containing at least two primary amino groups and compounds containing at least one β-ketocarbonyl group. The substrates exhibit good strength and hand properties.
摘要:
A process for defoaming and/or degassing organic systems by addition of an organopolysiloxane-containing anti-foaming agent to the organic system is characterized by the fact that the organopolysiloxane used is one composed of siloxane units having the general formulae (I) and (II), in which R is a univalent hydrocarbon residue with 1 to 18 carbon atoms per residue; A is a residue having the general formula (a), in which R.sup.1 is a residue having the formula --CR.sup.3 H--, where R.sup.3 stands for a hydrogen atom or a univalent organic residue; R.sup.2 is a residue having the formulae --CR.sup.4 H--CH.sub.2 -- or --CH.sub.2 CH.sub.2 CH.sub.2 -- where R.sup.4 stands for a hydrogen atom or a univalent organic residue; v and w represent each O or an integer, the sum of v+w being in average 0 to 16; x and y represent each 0 or 1, the sum x+y being 1 or 2; a equals 1,2 or 3; b equals 0, 1 or 2 and c equals 1 or 2, the sum b+c not exceeding 3.
摘要:
An antifoam formulations comprise (A) antifoam agent based on siloxanes and (B) branched polyether/polysiloxane copolymers comprising structural units of the formula Y[—CnH2n—(R2SiO)m—Ap—R2Si—G]x (I) in which Y is a multivalent, optionally heteroatom-containing hydrocarbon radical, R are monovalent optionally halogenated hydrocarbon radicals, A is a radical —R2Si—R2—(R2SiO)m—, G is a monovalent radical —CfH2f-2k—Z or a divalent radical —CnH2n— bonded to a radical Y, Z —(R6)v—(OCH2CH2)a[OCH2CH(CH3)]b[OCH2CH(CH2CH3)]c—OR3, in which R3 is hydrogen, a hydrocarbon radical, or a radical R—C(O)—, R6 is a divalent hydrocarbon radical, v is 0 or 1, a, b and c are 0 or an integer between 1 and 1000, the sum (a+b+c) being from 2 to 2000, x is 3 to 10, f is 2 to 12, k is 0 or 1, n is 2 to 12, m is at least 1, and p is 0 or a positive integer, the branched polyether/polysiloxane copolymers (B) containing on average at least one group Z.
摘要:
Organopolysiloxanes which contain ester groups and comprise units of the formula ##EQU1## in which R may be an identical or different monovalent, SiC-bonded hydrocarbon radical having 1 to 18 carbon atoms,A may be an identical or different radical of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, c, v, w, s, t,is 0 or an integer, the sum of s and tbeing an integer from 1 to 20,x is 0 or 1,y is 0 or 1, the sum of x and y being 1 or 2,a is 0, 1, 2 or 3, andb is 0, 1 or 2,with the proviso that the sum of a and b is less than or equal to 3 and the organopolysiloxane contains at least one radical A per molecule.
摘要:
(A) Siloxane-based antifoams and(B) silicone polyethers prepared by reacting organopolysiloxanes (1) containing 0.05% to 1.6% by weight of Si-bonded hydrogen atoms with unsaturated polyethers (3) of the formulae: CH2═CR1—(CH2)aO(C2H4O)bR1 (Ia) CH2═CR1—(CH2)aO(C2H4O)b(C3H6O)cR1 (Ib) CH2═CR1—(CH2)aO(C3H6O)cR1 (Ic), where R1 is a hydrogen or a C1-6 hydrocarbon radical, a is 0 to 16, b is 1 to 50, and c is 1 to 50, wherein the sum b+c is ≧10 and at least two different polyethers (Ia), (Ib) and (Ic) are used, and optionally further reacting the reaction product with organopolysiloxanes (2) containing from 0.01% to 0.5% by weight of Si-bonded hydrogen atoms, wherein the first and second step reactions take place with a hydrosilylation catalyst, and the weight ratio of Si-bonded hydrogen in organopolysiloxane (1) to Si-bonded hydrogen in organopolysiloxane (2) is at least 1.5.
摘要翻译:(A)基于硅氧烷的消泡剂和(B)通过使含有0.05重量%至1.6重量%的与Si键合的氢原子的有机聚硅氧烷(1)与下式的不饱和聚醚(3)反应制备的硅氧烷聚醚:CH 2 = CR 1 - (CH 2 )aO(C 2 H 4 O)b R 1(Ia)CH 2 = CR 1 - (CH 2)a O(C 2 H 4 O)b(C 3 H 6 O)c R 1(Ib)CH 2 = CR 1(CH 2)a O(C 3 H 6 O)c R 1(Ic) C 1-6烃基,a为0至16,b为1至50,c为1至50,其中总和b + c为≥10,并且至少两种不同的聚醚(Ia),(Ib)和( Ic),并且任选地使反应产物与含有0.01重量%至0.5重量%的与Si键合的氢原子的有机聚硅氧烷(2)进一步反应,其中第一和第二步骤反应用氢化硅烷化催化剂进行,重量 有机聚硅氧烷(1)中Si键合氢与硅键合氢在有机聚硅氧烷(2)中的比例至少为1.5。
摘要:
(A) Siloxane-based antifoams and (B) silicone polyethers prepared by reacting organopolysiloxanes (1) containing 0.05% to 1.6% by weight of Si-bonded hydrogen atoms with unsaturated polyethers (3) of the formulae: CH2═CR1—(CH2)aO(C2H4O)bR1 (Ia) CH2═CR1—(CH2)aO(C2H4O)b(C3H6O)cR1 (Ib) CH2═CR1—(CH2)aO(C3H6O)cR1 (Ic), where R1 is a hydrogen or a C1-6 hydrocarbon radical, a is 0 to 16, b is 1 to 50, and c is 1 to 50, wherein the sum b+c is ≧10 and at least two different polyethers (Ia), (Ib) and (Ic) are used, and optionally further reacting the reaction product with organopolysiloxanes (2) containing from 0.01% to 0.5% by weight of Si-bonded hydrogen atoms, wherein the first and second step reactions take place with a hydrosilylation catalyst, and the weight ratio of Si-bonded hydrogen in organopolysiloxane (1) to Si-bonded hydrogen in organopolysiloxane (2) is at least 1.5.
摘要翻译:(A)基于硅氧烷的消泡剂和(B)通过使含有0.05重量%至1.6重量%的与Si键合的氢原子的有机聚硅氧烷(1)与下式的不饱和聚醚(3)反应制备的硅氧烷聚醚:CH 2 = CR 1 - (CH 2 )aO(C 2 H 4 O)b R 1(Ia)CH 2 = CR 1 - (CH 2)a O(C 2 H 4 O)b(C 3 H 6 O)c R 1(Ib)CH 2 = CR 1(CH 2)a O(C 3 H 6 O)c R 1(Ic) C 1-6烃基,a为0至16,b为1至50,c为1至50,其中总和b + c为≥10,并且至少两种不同的聚醚(Ia),(Ib)和( Ic),并且任选地使反应产物与含有0.01重量%至0.5重量%的与Si键合的氢原子的有机聚硅氧烷(2)进一步反应,其中第一和第二步骤反应用氢化硅烷化催化剂进行,重量 有机聚硅氧烷(1)中Si键合氢与硅键合氢在有机聚硅氧烷(2)中的比例至少为1.5。
摘要:
Defoamer compositions of high effectiveness containing at least one siloxane-based antifoam and coupling a polysiloxane bearing active-hydrogen-containing hydrophilic polymer moieties by means of a di- or polyisocyanate.
摘要:
The present composition relates to fabric care compositions comprising an organosiloxane polymer. Methods of using such compositions including contacting a fabric with the composition and rinsing the fabric are also disclosed.