Treatment of fibrous materials

Details Treatment of fibrous materials Treatment of fibrous materials

1989-05-17

1990-12-18

Lusignan, Michael

Coating processes

With post-treatment of coating or coating material

Heating or drying

252 88, 427392, 428447, 428452, 528 26, 528 38, B05D 302

Patent

active

049785613

ABSTRACT:
The specification describes and claims a method of treating fibrous material which comprises applying to the fibrous material a composition comprising an organosilicon compound having a group .dbd.NCO(CH).sub.n OH connected with a silicon atom of the organosilicon compound. The organosilicon compound consists of or comprises (A) a silane according to the genral formula R.sup.1.sub.a A.sub.b Si(R"NXR').sub.c or (B) a polysiloxane comprising one or more siloxane units according to the general formula (i) ##EQU1## any remaining units of the polysiloxane being at least predominantly according to the general formula (ii) ##EQU2## A represents a hydroxyl or a hydrolysable group, R.sup.1 represents a monovalent hydrocarbon group having up to 8 carbon atoms, R.sup.2 represents a hydroxyl group, a group R.sup.1, a group OR.sup.1 or a group COR.sup.1, R.sup.4 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkenyl group or an aryl group, R.sup.1 represents a group R.sup.4 or a group X, R" represents a divalent hydrocarbon group which may have nitrogen, oxygen or sulphur present in the carbon chain, X represents a group CO(CHR).sub.n OH in which R represents a hydrogen atom, a hydroxyl group, a hydrocarbon group or a hydroxyl substituted hydrocarbon group a has the value 0, 1 or 2, b has the value 1, 2 or 3, c has the value 1 or 2, the sum of a+b+c=4, m has the value 0, 1 or 2, p has the value 1 or 2, q has the value 0, 1, 2 or 3, r has the vale 0, 1 or 2 and n has a value in the range 2 to 7. Fabrics treated according to the method have a satisfactory handle and improved non-yellowing properties.

REFERENCES:
patent: 4591652 (1986-05-01), DePasquale et al.
patent: 4624794 (1986-11-01), Cooke et al.
patent: 4749732 (1988-06-01), Kohl et al.

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