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US4107101A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the production of crosslinked, urethane-containing plastics

Assignee: Bayer AG
•
Filing: 1975-06-02
•
Granted: 1978-08-15
•
Expires: 1995-06-02
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Abstract

Abstract The instant invention relates to a process for the production of crosslinked plastics comprising reacting organic polyisocyanates, organic polyhydroxyl compounds and olefinically unsaturated monomers, optionally in the presence of catalysts and/or other auxiliaries and additives, wherein (A) THE POLYHYDROXYL COMPOUNDS USED ARE OLEFINICALLY UNSATURATED POLYHYDROXYL POLYESTERS WITH OH-numbers in the range of from 200 to 1000, molecular weights in the range of from 200 to 800 and double bond contents of from 0.1 to 0.5 gram equivalents of C=C double bonds per 100 g of polyester; (B) THE OLEFINICALLY UNSATURATED MONOMERS USED ARE OLEFINICALLY UNSATURATED COMPOUNDS WITH NO MORE THAN ONE ISOCYANATE-REACTIVE GROUP AND BOILING POINTS IN THE RANGE OF FROM 40 DEG TO 250 DEG C, the monomers being employed in such quantities that, for every olefinically unsaturated double bond in the polyhydroxyl compound (a) there are from 0.3 to 5 olefinically unsaturated double bonds emanating from the polymerizable monomers; and (C) THE QUANTITIES IN WHICH THE REACTANTS ARE USED ARE SELECTED IN SUCH A WAY THAT THERE ARE FROM 0.3 TO 5 ISOCYANATE GROUPS PER HYDROXYL GROUP IN THE REACTION MIXTURE.

Inventors

  • 👤 Rolf Kubens

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 11:00
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/68; C08F; C08F299/00; C08F299/02; C08F299/06; Y; Y10; Y10S; Y10S264/00; Y10S264/05

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 152 words
A process for the production of crosslinked, urethane-containing plastics which consists essentially of reacting (a) at least one organic polyisocyanate, (b) at least one organic polyhydroxyl polyester having an average hydroxyl number of from 200 to 1000, an average molecular weight of from 200 to 800, and an average double band content of from 0.1 to 0.5 gram equivalents of C═C double bonds per 100 grams of said polyester, and (c) at least one olefinically unsaturated monomer having no more than one isocyanate-reactive group and having a boiling point of from 40° to 250° C, the amount of said monomer being such that for every olefinically unsaturated double bond in said polyester, there are from 0.3 to 5 olefinically unsaturated double bonds emanating from the monomer, the quantities of the reactants being chosen such that there are from 0.3 to 5 isocyanate groups present in the reaction mixture per hydroxyl group present.
Claim 2
Dependent Claim 152 words
A process for the production of crosslinked, urethane-containing plastics which consists essentially of reacting (a) at least one organic polyisocyanate, (b) at least one organic polyhydroxyl polyester having an average hydroxyl number of from 200 to 1000, an average molecular weight of from 200 to 800, and an average double band content of from 0.1 to 0.5 gram equivalents of C═C double bonds per 100 grams of said polyester, and (c) at least one olefinically unsaturated monomer having no more than one isocyanate-reactive group and having a boiling point of from 40° to 250° C, the amount of said monomer being such that for every olefinically unsaturated double bond in said polyester, there are from 0.3 to 5 olefinically unsaturated double bonds emanating from the monomer, the quantities of the reactants being chosen such that there are from 0.3 to 5 isocyanate groups present in the reaction mixture per hydroxyl group present.
Claim 3
Dependent Claim 21 words
The process of claim 1 wherein a catalyst or catalysts for initiating the polymerization reaction is included in the reaction mixture.
Claim 4
Dependent Claim 31 words
The process of claim 2, wherein said catalyst or catalysts are used in quantities of from 0.001 to 6.0 percent by weight, based on the total weight of the reaction mixture.
Claim 5
Dependent Claim 10 words
The process of claim 2, wherein said monomer is styrene.
Claim 6
Dependent Claim 10 words
The process of claim 1, wherein said monomer is styrene.
Claim 7
Dependent Claim 18 words
The process of claim 1, wherein the reaction contains from 0.8 to 3 isocyanate groups per hydroxyl group.
Claim 8
Dependent Claim 25 words
The process of claim 1, wherein from 0.5 to 3 double bonds of component (c) are present for every double bond present in component (b).
Claim 9
Dependent Claim 15 words
The process of claim 1 wherein a blowing agent is included in the reaction mixture.
Claim 10
Dependent Claim 9 words
The product produced by the process of claim 1.

References Cited (Backward Citations)

US3008917A Cited
GB1279673A Cited
US3886229A Cited
US3860537A Cited
US3824201A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-08-14 1982-02-13 1982-08-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-08-14 1986-02-13 1986-08-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-08-14 1990-02-13 1990-08-15 $7700.00 Window Closed / Lapsed

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