Patent US2562430A successfully refreshed from Google Patents.
Patent DE438654C successfully refreshed from Google Patents.
Patent US3751290A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3751290A Expired / Lapsed US ⏱️ 0.0 years remaining

Nonwoven fabrics

Assignee: Zeneca Inc
•
Filing: 1971-06-18
•
Granted: 1973-08-07
•
Expires: 1991-06-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A process for binding nonwoven textiles by impregnating a nonwoven textile with a liquid application medium containing a polymer selected from the group consisting of 1. A POLYUREA POLYMER CHARACTERIZED BY THE GENERALIZED FORMULA WHEREIN M IS 0 OR 1, Q IS AN INTEGER FROM 1 TO 13, P'' IS A INTEGER FROM 3 TO 100, R'' is an alkylene group containing 3 to 5 carbon atoms, each R'''' is independently hydrogen or methyl and each R is independently selected from the group consisting of H and CH2OH, with the proviso that at least is CH2OH and group. AND WITH THE FURTHER PROVISO THAT AT LEAST ONE R is a CH2OH group. AND WITH THE FURTHER PROVISO THAT AT LEAST ONE R is a CH2O AND AT LEAST ONE A is AND AT LEAST ONE A is WHEREIN M IS 0 OR 1, N IS AN INTEGER FROM 2 TO 14, Q IS AN INTEGER FROM 1 TO 13, R'' is an alkylene group having from 3 to 5 carbon atoms, each R'''' is independently hydrogen or methyl, and each R is independently selected from the group consisting of hydrogen and CH2OH, with the proviso that at least one A is of hydrogen and CH2OH, with the proviso that at least one and each R is independently selected from the group consis 5 carbon atoms, each R'''' is independently hydrogen or meth INTEGER FROM 1 TO 13, R'' is an alkylene group having from WHEREIN M IS 0 OR 1, N IS AN INTEGER FROM 2 TO 14, Q IS AN AND AND WHEREIN M IS 0 OR 1, Q IS AN INTEGER FROM 1 TO 13, P'' IS AN INTEGER FROM 3 TO 100, R'' is an alkylene group containing from 3 to 5 carbon atoms, each R'''' is independently hydrogen or methyl and each R is independently selected from the group consisting of H and CH2OH, with the proviso that at least one R is CH2OH and 2. POLYUREAURETHANE POLYMERS CHARACTERIZED BY THE GENERALIZED FORMULA (A)x wherein x is an integer from 2 to 100 and each A is independently selected from the group consisting of

Inventors

  • 👤 R Santacecilia
  • 👤 E Sherburne

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 21:25
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/568; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/60

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 8 words
A POLYUREA POLYMER CHARACTERIZED BY THE GENERALIZED FORMULA
Claim 2
Dependent Claim 8 words
A POLYUREA POLYMER CHARACTERIZED BY THE GENERALIZED FORMULA
Claim 3
Dependent Claim 28 words
POLYUREAURETHANE POLYMERS CHARACTERIZED BY THE GENERALIZED FORMULA (A)X WHEREIN X IS AN INTEGER FROM 2 TO 100 AND EACH A IS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF
Claim 4
Dependent Claim 28 words
POLYUREAURETHANE POLYMERS CHARACTERIZED BY THE GENERALIZED FORMULA (A)X WHEREIN X IS AN INTEGER FROM 2 TO 100 AND EACH A IS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF
Claim 5
Dependent Claim 14 words
A nonwoven fabric of claim 1 wherein the binder resin is a methylolated polyurea.
Claim 6
Dependent Claim 14 words
A nonwoven fabric of claim 1 wherein the binder resin is a methylolated polyureaurethane.
Claim 7
Dependent Claim 12 words
A nonwoven fabric of claim 1 wherein the fiber comprises cellulosic fibers.
Claim 8
Dependent Claim 15 words
A nonwoven fabric of claim 1 comprising cellulose fibers held together by a methylolated polyureaurethane.
Claim 9
Dependent Claim 12 words
A nonwoven fabric of claim 1 wherein the fiber comprises nylon fibers.
Claim 10
Dependent Claim 12 words
A nonwoven fabric of claim 1 wherein the fiber comprises polyester fibers.

References Cited (Backward Citations)

US2696504A Cited
US2699435A Cited
US2774687A Cited
US2709694A Cited
US3000757A Cited
US2955095A Cited
US3054777A Cited
US3021307A Cited
US3133897A Cited
US3359243A Cited
US3412072A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-06 1977-02-05 1977-08-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-06 1981-02-05 1981-08-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-06 1985-02-05 1985-08-07 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag