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US3915929A Expired / Lapsed US ⏱️ 0.0 years remaining

Reinforced polyolefin composition and its production

Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1973-08-31
•
Granted: 1975-10-28
•
Expires: 1993-08-31
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Abstract

Abstract A reinforced polyolefin composition which comprises a polyolefin, glass fibers and an ethylene-unsaturated glycidyl monomer-ethylenically unsaturated monomer terpolymer obtained by polymerizing 35 to 95.9 parts by weight of ethylene with 0.1 to 20 parts by weight of an unsaturated glycidyl monomer and 4 to 45 parts by weight of any other polymerizable ethylenically unsaturated monomer, containing the unsaturated glycidyl monomer unit in an amount of 1 to 45% by weight and the ethylenically unsaturated monomer unit in an amount of 4 to 45% by weight and having an intrinsic viscosity of 0.1 to 4.5 dl/g in tetralin solution at 135*C; the contents of the glass fibers and of the ethylene-unsaturated glycidyl monomer-ethylenically unsaturated monomer terpolymer being respectively 5 to 60% by weight and 0.1 to 25% by weight (based on the total weight of the composition).

Inventors

  • 👤 Hiroshi Kishikawa
  • 👤 Kanji Yoshikawa
  • 👤 Yoshiharu Tatsukami
  • 👤 Hiroshi Katsuki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 00:09
CPC Classifications
C; C08; C08F; C08F246/00; C08F10/00; C08F16/00; C08F16/12; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/32; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08K9/00; C08K9/08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0869; C08L23/10; C08L2207/00; C08L2207/06; C08L2207/062

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 31 words
A REINFORCED POLYOLEFIN COMPOSITION WHICH COMPRISES A POLYOLEFIN, GLASS FIBERS AND A TERPOLYMER OF ETHYLENE, AN UNSATURATED GLYCIDYL MONOMER SELECTED FROM THE GROUP CONSISTING OF UNSATURATED GLYCIDYL ESTER OF THE FORMULA:
Claim 2
Dependent Claim 31 words
A REINFORCED POLYOLEFIN COMPOSITION WHICH COMPRISES A POLYOLEFIN, GLASS FIBERS AND A TERPOLYMER OF ETHYLENE, AN UNSATURATED GLYCIDYL MONOMER SELECTED FROM THE GROUP CONSISTING OF UNSATURATED GLYCIDYL ESTER OF THE FORMULA:
Claim 3
Dependent Claim 32 words
The reinforced polyolefin composition according to claim 1, wherein the amount of the glass fibers is from 10 to 40% by weight on the basis of the total weight of the composition.
Claim 4
Dependent Claim 23 words
The reinforced polyolefin composition according to claim 1, wherein the polyolefin is selected from the group consisting of ethylene homopolymer and propylene homopolymer.
Claim 5
Dependent Claim 28 words
The reinforced polyolefin composition according to claim 1, wherein the unsaturated glycidyl monomer is selected from the group consisting of glycidyl acrylate, glycidyl methacrylate and allyl glycidyl ether.

References Cited (Backward Citations)

US2953551A Cited
US3696069A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-27 1979-04-28 1979-10-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-27 1983-04-28 1983-10-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-27 1987-04-28 1987-10-28 $7700.00 Window Closed / Lapsed

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