← Back to Patent Explorer
US3607977A Expired / Lapsed US ⏱️ 0.0 years remaining

Block copolymer compositions exhibiting altered surface activity

Assignee: Shell USA Inc
•
Filing: 1968-09-12
•
Granted: 1971-09-21
•
Expires: 1988-09-12
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Block copolymer compositions are provided comprising a hydrocarbon block polymer containing at least three polymer blocks one or more being of a monovinyl arene and one or more being of a conjugated diene or hydrogenated derivative of said polymers, combined with certain derivatized block copolymers characterized by their content of blocks compatible with the monovinyl arene blocks of the first block polymer and by their content of a second type of polymer block which is incompatible with the first named polymer block but may or may not be compatible with the conjugated diene polymer blocks of the first block polymer. These compositions are especially useful for such purposes as adhesion to polar surfaces, reduction in flammability, improvement in weatherability and other properties.

Inventors

  • 👤 Glenn L Taylor
  • 👤 John W Cotton
  • 👤 De Loss E Winkler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 00:51
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; Y; Y10; Y10S; Y10S525/00; Y10S525/94; Y10S623/00; Y10S623/924

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 27 words
A composition according to claim 1 wherein the first block copolymer has the general configuration polystyrene-polybutadiene-(polybutadiene-polystyrene)1-3 and the second block copolymer has the general configuration polystyrene-poly(hydrobrominated butadiene).
Claim 2
Dependent Claim 27 words
A composition according to claim 1 wherein the first block copolymer has the general configuration polystyrene-polybutadiene-(poly-butadiene-polystyrene)1-3 and, the second block copolymer has the general configuration polystyrene-(hydrochlorinated polybutadiene).

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-20 1975-03-22 1975-09-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-20 1979-03-22 1979-09-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-20 1983-03-22 1983-09-21 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag