US3881047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of fibres
Assignee: Novartis AG
•
Filing: 1973-07-02
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Granted: 1975-04-29
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Expires: 1993-07-02
Abstract
Abstract A softer handle is imparted to fibres of polyesters and the like by treating them with a polythiol resin and curing the resin. The resistance to soiling and soil redeposition, and soil release properties, may also be improved. The resins employed contain at least two thiol groups per molecule linked via ester or ether groups to poly(oxyalkylene) chains.
Inventors
- 👤 Derek James Rowland Massy
- 👤 Kenneth Winterbottom
- 👤 Albert John Barber
- 👤 James Mccartney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:33
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/63; C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/334; C08G65/3342; C08L; C08L71/00; C08L71/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31533; Y10T428/31786
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
8 words
A PROCESS FOR MODIFYING SYNTHETIC FIBRES WHICH COMPRISES
Claim 2
Dependent Claim
8 words
A PROCESS FOR MODIFYING SYNTHETIC FIBRES WHICH COMPRISES
Claim 3
Dependent Claim
134 words
TREATING THE FIBRES, IN THE ABSENCE OF KERATINOUS MATERIAL, WITH A POLYTHIOL HAVING TWO TO SIX THIOL GROUPS PER MOLECULE AND A MOLECULAR WEIGHT ETWEEN ABOUT 400 AND ABOUT 10,000 WHEREIN THE POLYTHIOL HAS THE FORMULA R(-(O-ALKYLENE)M-OH)Q(-(O-ALKYLENE)M-O-(CO)N-X)P IN WHICH M IS A POSITIVE INTEGER OF AT LEAST 1, N IS ZERO OF 1, P IS A POSITIVE INTEGER OF AT LEAST 2 AND AT MOST 6, Q IS ZERO OR A POSITIVE INTEGER OF FOUR OR LESS, SELECTED SO THA T (P+Q) EQUALS AT LEAST 2 AND AT MOST 6, EACH ''ALKYLENE'' GROUP CONTAINS A CHAIN OF AT LEAST 2 AND AT MOST 6 CARBON ATOMS BETWEEN CONSECUTIVE OXYGEN ATOMS, R IS AN ALIPHATIC RADICAL CONTAINING AT LEAST 2 CARBON ATOMS, AND X IS AN ALIPHATIC RADICAL CONTAINING AT LEAST ONE THIOL GROUP AND
Claim 4
Dependent Claim
134 words
TREATING THE FIBRES, IN THE ABSENCE OF KERATINOUS MATERIAL, WITH A POLYTHIOL HAVING TWO TO SIX THIOL GROUPS PER MOLECULE AND A MOLECULAR WEIGHT ETWEEN ABOUT 400 AND ABOUT 10,000 WHEREIN THE POLYTHIOL HAS THE FORMULA R(-(O-ALKYLENE)M-OH)Q(-(O-ALKYLENE)M-O-(CO)N-X)P IN WHICH M IS A POSITIVE INTEGER OF AT LEAST 1, N IS ZERO OF 1, P IS A POSITIVE INTEGER OF AT LEAST 2 AND AT MOST 6, Q IS ZERO OR A POSITIVE INTEGER OF FOUR OR LESS, SELECTED SO THA T (P+Q) EQUALS AT LEAST 2 AND AT MOST 6, EACH ''ALKYLENE'' GROUP CONTAINS A CHAIN OF AT LEAST 2 AND AT MOST 6 CARBON ATOMS BETWEEN CONSECUTIVE OXYGEN ATOMS, R IS AN ALIPHATIC RADICAL CONTAINING AT LEAST 2 CARBON ATOMS, AND X IS AN ALIPHATIC RADICAL CONTAINING AT LEAST ONE THIOL GROUP AND
Claim 5
Dependent Claim
6 words
CURING THE POLYTHIOL ON THE FIBRES.
Claim 6
Dependent Claim
6 words
CURING THE POLYTHIOL ON THE FIBRES.
Claim 7
Dependent Claim
6 words
curing the polythiol on the fibres.
Claim 8
Dependent Claim
6 words
curing the polythiol on the fibres.
Claim 9
Dependent Claim
57 words
The process of claim 1, wherein q is zero or 1, p is 2 to 6, provided that when q is 1, p is 2, R is an aliphatic hydrocarbon radical having at least 3 and at most 6 carbon atoms, and X is an aliphatic radical of the formula CuH2uSH, wherein u is 1 or 2.
Claim 10
Dependent Claim
19 words
The process of claim 1, wherein the polythiol is selected from the group consisting of those of the formulae:
Claim 11
Dependent Claim
61 words
The process of claim 3, wherein the polythiol is selected from the group consisting of those of the formula: I, wherein t is 3 and u is 1; III, wherein t is 3 and u is 1; and VI, wherein t is 3 and u is 1, said polythiol having an average weight of at least 1,000 and at most 7,500.
Claim 12
Dependent Claim
17 words
The process of claim 1, wherein n zero and, X is an aliphatic radical of the formula
Claim 13
Dependent Claim
27 words
The process of claim 5, wherein R3 is -OH or -(O-alkylene)vOH, q is zero, p is 3 to 6, and the ''alkylene'' groups are -C2H4- or -C3H6-.
Claim 14
Dependent Claim
17 words
The process of claim 6, wherein R3 is OH, q is zero, p is 3, R is
Claim 15
Dependent Claim
12 words
The process of claim 1 wherein the polythiol is of the formula
Claim 16
Dependent Claim
26 words
The process of claim 1, wherein there is used a weight of polythiol which is 0.1 to 10 percent of the weight of synthetic fibres treated.
Claim 17
Dependent Claim
63 words
The process of claim 1 in which a catalyst for curing the polythiol is also applied, said catalyst being selected from the group consisting of hoses, siccatives, sulphur, sulphur-containing organic compounds in which the sulphur atoms are not exclusively present as mercaptan groups, free-radical catalysts, salts of heavy metals with acids having an acid strenght (pK1) below 5, and chelates of heavy metals.
Claim 18
Dependent Claim
11 words
The process of claim 10 wherein the catalyst is hydrogen peroxide.
Claim 19
Dependent Claim
24 words
The process of claim 1, which comprises treating the synthetic fibres with the polythiol at a temperature in the range of 30* to 220*C.
Claim 20
Dependent Claim
37 words
The process of claim 1, wherein the polythiol is applied to the fibres by immersing them in an aqueous medium which contains the polythiol and which is heated to a temperature in the range 25* to 95*C.
Claim 21
Dependent Claim
26 words
The process of claim 1, wherein the polythiol is applied to the fibres from an aqueous medium having a pH in the range 3 to 6.
Claim 22
Dependent Claim
19 words
The process of claim 1, wherein the polythiol is cured at a pH in the range 7.5 to 12.
Claim 23
Dependent Claim
24 words
THE PROCESS OF CLAIM 1, IN WHICH THE SYNTHETIC FIBRES ARE SELECTED FROM THE GROUP COMPRISING FIERS OF NYLON, POLYESTER, POLYACRLONITRILE, AND POLYVINYL ALCOHOL.
Claim 24
Dependent Claim
43 words
Synthetic fibrous material, free from keratinous material, bearing thereon from 0.1 to 10 percent by weight of a polythiol resin having 2 to 6 thiol groups per molecule and a molecular weight between about 400 and about 10,000, the polythiol having the formula:
Claim 25
Dependent Claim
43 words
Synthetic fibrous material, free from keratinous material, bearing thereon from 0.1 to 10 percent by weight of a polythiol resin having 2 to 6 thiol groups per molecule and a molecular weight between about 400 and about 10,000, the polythiol having the formula:
Claim 26
Dependent Claim
59 words
The synthetic fibrous material of claim 17, wherein q is zero or 1, p is 2 to 6, provided that when q is 1, p is 2 R is an aliphatic hydrocarbon radical having at least 3 and at most 6 carbon atoms, and X is an aliphatic radical of the formula CuH2uSH, wherein u is 1 or 2.
Claim 27
Dependent Claim
15 words
The synthetic fibrous material of claim 17, wherein the polythiol is selected from the formula:
Claim 28
Dependent Claim
65 words
The synthetic fibrous material of claim 17, wherein the polythiol is selected from the group consisting of those of the formulae: I, wherein t is 3 and u is 1; III, wherein t is 3 and u is 1; and VI, wherein t is 3 and u is 1, said polythiol having an average molecular weight of at least 1, 000 and at most 7,500.
Claim 29
Dependent Claim
19 words
The synthetic fibrous material of claim 17, wherein n is zero, X is an aliphatic radical of the formula
Claim 30
Dependent Claim
29 words
The synthetic fibrous material of claim 17, wherein R3 is -OH or -(O-alkylene)vOH, q is zero, p is 3 to 6, and the ''alkylene'' groups are -C2H4- or -C3H6-.
Claim 31
Dependent Claim
19 words
The synthetic fibrous material of claim 17, wherein R3 is OH, q is zero, p is 3, R is
Claim 32
Dependent Claim
14 words
The synthetic fibrous material of claim 17, wherein the polythiol is of th formula
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |