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US3852302A Expired / Lapsed US ⏱️ 0.0 years remaining

Diacrylic acid ester derivatives of hydantoin compounds

Assignee: Novartis Corp
•
Filing: 1972-04-05
•
Granted: 1974-12-03
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Expires: 1992-04-05
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Abstract

Abstract The disclosure covers diacrylic acid ester of the formula: WHEREIN R1, R1'', R3 and R3'' are hydrogen or methyl, R2 and R2'' are hydrogen or phenyl, or R2 and R3 or R2'' and R3'' form a trimethylene or tetramethylene group; m and n are 1 to 30 and A is an organic radical containing at least once the grouping: WHEREIN Z represents a bivalent radical necessary for the completion of a five- or six-membered, unsubstituted or substituted, heterocyclic ring. The compounds are obtained by a process in which oxalkylated N, N-heterocycles containing once or twice the heterocyclic ring are esterified with acrylic acid and/or methacrylic acid, or transesterified with acrylic acid ester and/or methacrylic acid ester. The new diacrylates are low-viscous liquids, which can be easily processed by virtue of their consistency; and the polymerisates produced therefrom, are distinguished by good flexural strength and high transparency.

Inventors

  • 👤 J Habermeier
  • 👤 D Porret

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 13:08
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/20; C07D239/22; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 7 words
A DIACRYLACIC ACID ESTER OF THE FORMULA
Claim 2
Dependent Claim 7 words
A DIACRYLACIC ACID ESTER OF THE FORMULA
Claim 3
Dependent Claim 10 words
Diacrylic acid ester according to claim 1 of the formula:
Claim 4
Dependent Claim 10 words
Diacrylic acid ester according to claim 1 of the formula:
Claim 5
Dependent Claim 10 words
Diacrylic acid ester according to claim 1 of the formula:
Claim 6
Dependent Claim 10 words
Diacrylic acid ester according to claim 1 of the formula:
Claim 7
Dependent Claim 10 words
Diacrylic acid ester according to claim 1 of the formula:

References Cited (Backward Citations)

US3213104A Cited
US2972618A Cited
DE1954503A1 Cited
US3629263A Cited
DE1812003A1 Cited
US3726895A Cited
US3676454A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-02 1978-06-03 1978-12-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-02 1982-06-03 1982-12-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-02 1986-06-03 1986-12-03 $7700.00 Window Closed / Lapsed

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