§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4200733A Expired / Lapsed US ⏱️ 0.0 years remaining

Iodine-containing block copolymers of 1,4-butylene oxide and ethylene oxide

Assignee: BASF SE
•
Filing: 1979-03-29
•
Granted: 1980-04-29
•
Expires: 1999-03-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Iodine-containing block copolymers which contain from 5 to 25% by weight of bonded iodine, and which are based on iodine-free compounds of the formula I R(AB).sub.z I where if z=1, R is hydrogen or a C 1 -C 18 -aliphatic hydrocarbon radical, if z≠1, R is a z-valent aliphatic hydrocarbon radical of 2 to 8 carbon atoms, which may or may not carry up to z ethylene oxide units, z is from 1 to 6, A is a polymer or copolymer block of from 4 to 100 1,4-butylene oxide units and from 0 to 25 ethylene oxide units and B is a polymer or copolymer block of from 0 to 50 1,4-butylene oxide units and from 1 to 100 ethylene oxide units, the proportion of 1,4-butylene oxide being >50 mole % in A and <50 mole % in B.

Inventors

  • 👤 Johannes Perner
  • 👤 Norbert Greif
  • 👤 Rolf Fikentscher
  • 👤 Paul Diessel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 01:41
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/48; C11D3/485; A; A01; A01N; A01N59/00; A01N59/12; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 150 words
An iodine-containing block copolymer which contains from 5 to 25% by weight of bonded iodine, which is combined with an iodine-free compound of the formula I R(AB).sub.z I where if z=1, R is hydrogen or a C 1 -C 18 -aliphatic hydrocarbon radical, if z≠1, R is a z-valent aliphatic hydrocarbon radical of 2 to 8 carbon atoms, or a divalent aliphatic hydrocarbon radical of 2 to 8 carbon atoms which carries up to z ethylene oxide units, z is from 1 to 6, A is a polymer or copolymer block of from 4 to 100 1,4-butylene oxide units and from 0 to 25 ethylene oxide units and B is a polymer or copolymer block of from 0 to 50 1,4-butylene oxide units and from 1 to 100 ethylene oxide units, the proportion of 1,4-butylene oxide being > 50 mole % in A and < 50 mole % in B.
Claim 2
Dependent Claim 150 words
An iodine-containing block copolymer which contains from 5 to 25% by weight of bonded iodine, which is combined with an iodine-free compound of the formula I R(AB).sub.z I where if z=1, R is hydrogen or a C 1 -C 18 -aliphatic hydrocarbon radical, if z≠1, R is a z-valent aliphatic hydrocarbon radical of 2 to 8 carbon atoms, or a divalent aliphatic hydrocarbon radical of 2 to 8 carbon atoms which carries up to z ethylene oxide units, z is from 1 to 6, A is a polymer or copolymer block of from 4 to 100 1,4-butylene oxide units and from 0 to 25 ethylene oxide units and B is a polymer or copolymer block of from 0 to 50 1,4-butylene oxide units and from 1 to 100 ethylene oxide units, the proportion of 1,4-butylene oxide being > 50 mole % in A and < 50 mole % in B.
Claim 3
Dependent Claim 26 words
A block copolymer as claimed in claim 1, wherein the overall molar ratio of 1,4-butylene oxide units to ethylene oxide units is from 0.25:1 to 1.2:1.
Claim 4
Dependent Claim 52 words
A process for the preparation of an iodine-containing block copolymer as claimed in claim 1, wherein a compound of the formula I is combined with an amount of elementary iodine which is such that the reaction product contains from 5 to 25% by weight of bonded iodine, based on the reaction product.

References Cited (Backward Citations)

US1970578A Cited
US2213477A Cited
US3285816A Cited
US3438906A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-04-29 1983-10-29 1984-04-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-04-29 1987-10-29 1988-04-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-04-29 1991-10-29 1992-04-29 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag