EP0249262A2
Expired / Lapsed
EP
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Thermoplastic polymer composition having thermosetting processing characteristics
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1987-05-14
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Granted: —
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Expires: 2007-05-14
Abstract
Abstract The present invention relates to a new polymer composition having the processing characteristics of a thermosetting polymer along with an improved balance of properties including improved modulus/glass transition temperature/toughness balance. These new polymer compositions are prepared by reacting certain diphenolic compounds with certain diepoxide compounds to form linear units which are lightly crosslinked through the resulting secondary hydroxyl groups. Also disclosed and claimed are processes for preparing such compositions, cured compositions and end-use applications.
Inventors
- 👤 Kenneth Carl Dewhirst
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 09:41
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/18; C08G59/20; C08G59/32; C08G59/38; C08G59/40; C08G59/50; C08G59/5033; C08G59/62; C08G59/621; C08G59/64
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
169 words
A composition comprising linear molecules having the repeating structures: a) "X" represents a stiff segment comprising stiff units (SU) and optional flexible units (FU), which stiff units and flexible units are interconnected; b) "Y" represents a flexible segment comprising stiff units (SU') and optional flexible units (FU') which stiff units and flexible units are interconnected; c) said stiff units, SU and SU', are independently selected from the group consisting of substituted and non-substituted aromatic rings, cycloaliphatic rings and non-interfering heterocyclic rings; d) said flexible units, FU and FU', are independently selected from the group consisting of e) the number of stiff segments in said molecules is "a", the number of flexible segments in said molecules is "b", and the ratio a a+b is less than or equal to one; and f) the ratio of the number of stiff units to flexible units in said stiff segment (SU/FU) is equal to or greater than the ratio of the number of stiff units to flexible units in said flexible segment (SU'/FU').
Claim 2
Dependent Claim
169 words
A composition comprising linear molecules having the repeating structures: a) "X" represents a stiff segment comprising stiff units (SU) and optional flexible units (FU), which stiff units and flexible units are interconnected; b) "Y" represents a flexible segment comprising stiff units (SU') and optional flexible units (FU') which stiff units and flexible units are interconnected; c) said stiff units, SU and SU', are independently selected from the group consisting of substituted and non-substituted aromatic rings, cycloaliphatic rings and non-interfering heterocyclic rings; d) said flexible units, FU and FU', are independently selected from the group consisting of e) the number of stiff segments in said molecules is "a", the number of flexible segments in said molecules is "b", and the ratio a a+b is less than or equal to one; and f) the ratio of the number of stiff units to flexible units in said stiff segment (SU/FU) is equal to or greater than the ratio of the number of stiff units to flexible units in said flexible segment (SU'/FU').
Claim 3
Dependent Claim
31 words
A composition as claimed in claim 1, in which the number of stiff units (SU, SU') and flexible units (FU, FU') is selected such that divided by is greater than four.
Claim 4
Dependent Claim
41 words
A composition as claimed in claim 1, in which the number of stiff units (SU, SU') and flexible units (FU, FU') is selected such that divided by the average number of total flexible units is less than or equal to four.
Claim 5
Dependent Claim
38 words
The composition of any one of claims 1 to 3, wherein the average number of total stiff units (SU + SU') divided by the average number of total flexible units (FU + FU') is between 5 and 10.
Claim 6
Dependent Claim
33 words
The composition of claim 3, wherein the average number of total stiff units (SU + SU') divided by the average number of total flexible units (FU + FU') is between 1.5 and 4.
Claim 7
Dependent Claim
106 words
The composition according to any one of claims 1 to 5, wherein the stiff segment X has the structure -Ar-Z-Ar-where Ar is substituted or non-substituted benzene rings, optionally annulated with one or more additional benzene rings, and wherein Z represents a gem-bivalent radical having 1 to 2 aromatic hydrocarbon rings and a gem-bivatent non-aromatic ring selected from the group consisting of a ring of 5 carbon atoms, a ring of 6 carbon atoms one of which carbon atoms may bear an oxo oxygen atom, and a ring of 5 carbon atoms and one oxygen atom, said gem-bivalent non-aromatic ring being fused to said aromatic hydrocarbon rings.
Claim 8
Dependent Claim
41 words
The composition of any one of the claims 1 to 6, which additionally contains an effective amount of crosslinking agent such that upon curing between 1 and 20 repeating structures from different molecules per 100 of said repeating structures are crosslinked.
Claim 9
Dependent Claim
12 words
A composition resulting from the curing of the composition of claim 7.
Claim 10
Dependent Claim
35 words
The cured composition of claim 8 having a glass transition temperature of at least about 150 °C, a flex modulus of at least 350 KSI and a fracture toughness of at least 1000 psi.in.O. 5
Claim 11
Dependent Claim
9 words
A composition as claimed in claim 7, wherein -Z-is
Claim 12
Dependent Claim
22 words
A composition as claimed in claim 1, in which X is or and "y" has a value of from 0 to 3.
References Cited (Backward Citations)
No citation records indexed.
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