Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Treating textiles or fibers from synthetic resin or natural...
Reexamination Certificate
2007-03-06
2007-03-06
Page, Thurman K. (Department: 1621)
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
Treating textiles or fibers from synthetic resin or natural...
C560S179000
Reexamination Certificate
active
10469748
ABSTRACT:
The invention relates to reaction products of glycols, diglycols, higher glycols or glycerol with α-hydroxycarboxylic acids in a molar ratio of 1:2 or higher, especially conforming to the general formula (V) where R is hydrogen or a C1-3alkyl group, preferably methyl, nx is from 1 to 5, preferably from 1 to 3, n is 1 or 2 and when n=1 the radical R″ is C1-4alkylene, preferably ethylene, x is defined as x′ and y is not less than 1, preferably from 1 to 5, especially 1 or 2, and when n=2 the radical R″ is a glycerol radical, x is defined as x″ and y is =1.The invention further relates to the use of the (poly)hydroxycarboxylic acid (poly)glycol esters or (poly)hydroxycarboxylic acid glyceryl esters as acid donors and for controlling the pH in textile treatment processes.
REFERENCES:
patent: 2158107 (1939-05-01), Carruthers et al.
patent: 2350964 (1944-06-01), Loder et al.
patent: 2573701 (1951-11-01), Filachione et al.
patent: 3600121 (1971-08-01), Feldmann
patent: 4568351 (1986-02-01), Palleiro Cardona et al.
patent: 5718732 (1998-02-01), Bennett et al.
patent: 669 882 (1989-04-01), None
patent: 2 302 882 (1997-02-01), None
XP-008004387, J.T. Stearn et al., “Lactic acid as a component of synthetic resins” Industrial and Engineering Chemistry, vol. 32, 1940, pp. 1335-1342.
XP-002203586, C.E. Rehberg et al., “Mixed esters of lactic and carbonic acids. n-Alkyl carbonates of various lactates”, Journal of Organic Chemistry, vol. 15, 1950, pp. 1246-1252.
Clariant Finance (BVI) Limited
Page Thurman K.
Puttlitz Karl
Waldrop Tod A.
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