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US3882078A
Expired / Lapsed
US
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Fiber reinforced polyester resin having a low surface profile and improved impact strength
Assignee: Motors Liquidation Co
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Filing: 1973-12-13
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Granted: 1975-05-06
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Expires: 1993-12-13
Abstract
Abstract Herein is disclosed a new fiber filled polyester composition which may be used as either a bulk molding or sheet molding compound. Fiber reinforced articles molded from this composition have both a low profile surface which is suitable for decorative applications and improved impact strength. In a preferred embodiment this novel fiber filled formulation comprises an unsaturated aliphatic polyester, a block copolymer containing at least one relatively long block of an elastomeric material such as a polydiene and at least one relatively short block of a rigid thermoplastic material such as polystyrene, and a liquid monomeric crosslinking diluent. The block copolymer, which must be readily miscible in the liquid compounding mixture, contributes to both the low profile surface and the high impact strength.
Inventors
- 👤 Hideo Kubota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
230 words
A FIBER REINFORCED MOLDED ARTICLE FORMED BY HEATING UNDER PRESSURE A MIXTURE COMPRISING BY WEIGHT: 25 TO 60 PARTS OF AN UNSATURATED POLYESTER FORMED FORM A LINEAR ALIPHATIC ALPHA, BETA-UNSATURATED DICARBOXYLIC ACID AND/OR ANHYDRIDE HAVING FROM FOUR TO SIX CARBON ATOMS AND A POLYHYDRIC ALCOHOL, SAID POLYESTER HAVING AN ACID NUMBER OF FROM 5 TO 40; AND 5 TO 20 PARTS OF A POLYMER COMPOSITION CONSISTING OF, BY WEIGHT, 0 TO 50 PARTS OF A THERMOPLASTIC POLYMER HAVING A GLASS TRANSITION TEMPERATURE ABOVE 30*C. AND 50 TO 100 PARTS OF AN ABA TYPE BLOCK COPOLYMER HAVING A AND B SEGMENTS WITH SAID A SEGMENTS BEING REPEATING MER UNITS OF A MATERIAL WHIC IF HOMOPOLYMERIZED WOULD PRODUCE A RIGID THERMOPLASTIC POLYMER HAVING A GLASS TRANSITION TEMPERATURE ABOVE 30*C. AND SAID B SEGMENTS BEING REPEATING MER UNITS OF A MATERIAL WHICH IF HOMOPOLYMERIZED WOULD PRODUCE A FLEXIBLE ELASTOMERIC POLYMER HAVING A GLASS TRANSITION TEMPERATURE BELOW 10*C.; AND 40 TO 60 PARTS OF A MONOMERIC COPOLYMERIZABLE DILUENT SELECTED FROM THE GROUP CONSISTING OF TERTIARY BUTYL STYRENE, AND MIXTURES COMPRISING AT LEAST 50%% BY VOLUME TERTIARY BUTYL STYLENE AND THE BALANCE OF A SAID MIXTURE BEING ANY OF STYRENE, MONOCHLOROSTYREN, OR VINYL TOLUENE, AND 50 TO 100 PARTS OF A FIBROUS REINFORCEMENT FILLER, AND 100 TO 180 OF A MINERAL FILLER, SAID POLYESTER AND SAID POLYMER COMPOSTION BEING INTIALLY UNIFORMLY DISPERSED IN SAID DILUENT.
Claim 2
Dependent Claim
230 words
A FIBER REINFORCED MOLDED ARTICLE FORMED BY HEATING UNDER PRESSURE A MIXTURE COMPRISING BY WEIGHT: 25 TO 60 PARTS OF AN UNSATURATED POLYESTER FORMED FORM A LINEAR ALIPHATIC ALPHA, BETA-UNSATURATED DICARBOXYLIC ACID AND/OR ANHYDRIDE HAVING FROM FOUR TO SIX CARBON ATOMS AND A POLYHYDRIC ALCOHOL, SAID POLYESTER HAVING AN ACID NUMBER OF FROM 5 TO 40; AND 5 TO 20 PARTS OF A POLYMER COMPOSITION CONSISTING OF, BY WEIGHT, 0 TO 50 PARTS OF A THERMOPLASTIC POLYMER HAVING A GLASS TRANSITION TEMPERATURE ABOVE 30*C. AND 50 TO 100 PARTS OF AN ABA TYPE BLOCK COPOLYMER HAVING A AND B SEGMENTS WITH SAID A SEGMENTS BEING REPEATING MER UNITS OF A MATERIAL WHIC IF HOMOPOLYMERIZED WOULD PRODUCE A RIGID THERMOPLASTIC POLYMER HAVING A GLASS TRANSITION TEMPERATURE ABOVE 30*C. AND SAID B SEGMENTS BEING REPEATING MER UNITS OF A MATERIAL WHICH IF HOMOPOLYMERIZED WOULD PRODUCE A FLEXIBLE ELASTOMERIC POLYMER HAVING A GLASS TRANSITION TEMPERATURE BELOW 10*C.; AND 40 TO 60 PARTS OF A MONOMERIC COPOLYMERIZABLE DILUENT SELECTED FROM THE GROUP CONSISTING OF TERTIARY BUTYL STYRENE, AND MIXTURES COMPRISING AT LEAST 50%% BY VOLUME TERTIARY BUTYL STYLENE AND THE BALANCE OF A SAID MIXTURE BEING ANY OF STYRENE, MONOCHLOROSTYREN, OR VINYL TOLUENE, AND 50 TO 100 PARTS OF A FIBROUS REINFORCEMENT FILLER, AND 100 TO 180 OF A MINERAL FILLER, SAID POLYESTER AND SAID POLYMER COMPOSTION BEING INTIALLY UNIFORMLY DISPERSED IN SAID DILUENT.
Claim 3
Dependent Claim
201 words
a dispersion comprising by weight, a. 25 to 60 parts of an unsaturated polyester condensation product of linear, aliphatic, alpha, beta-unsaturated dicarboxylic acid and/or anhydride having from four to six carbon atoms and a polyhydric alcohol, said condensation product having an acid number in the range of 5 to 40, and b. 5 parts to 20 parts of a polymer composition consisting by weight of 0 to 50 parts of a rigid thermoplastic polymer having a glass transition temperature greater than 30* C. and 50 parts to 100 parts of a three segment block copolymer having an ABA type molecular structure, with said A segments being polystyrene segments, and said B segments being made up substantially of either repeating butadiene or isoprene units, or randomly mixed ethylene and propylene units, said block copolymer having a B to A plus B weight ratio of 0.5 to 0.8 with (a) and (b) being uniformly dispersed in c. from 40 to 60 parts of a monomeric copolymerizable diluent selected from the group consisting of tertiary butyl styrene, and mixtures comprising at least 50% by volume tertiary butyl styrene, and the balance of a said mixture being any of styrene, monochlorostyrene or vinyl toluene, and
Claim 4
Dependent Claim
201 words
a dispersion comprising by weight, a. 25 to 60 parts of an unsaturated polyester condensation product of linear, aliphatic, alpha, beta-unsaturated dicarboxylic acid and/or anhydride having from four to six carbon atoms and a polyhydric alcohol, said condensation product having an acid number in the range of 5 to 40, and b. 5 parts to 20 parts of a polymer composition consisting by weight of 0 to 50 parts of a rigid thermoplastic polymer having a glass transition temperature greater than 30* C. and 50 parts to 100 parts of a three segment block copolymer having an ABA type molecular structure, with said A segments being polystyrene segments, and said B segments being made up substantially of either repeating butadiene or isoprene units, or randomly mixed ethylene and propylene units, said block copolymer having a B to A plus B weight ratio of 0.5 to 0.8 with (a) and (b) being uniformly dispersed in c. from 40 to 60 parts of a monomeric copolymerizable diluent selected from the group consisting of tertiary butyl styrene, and mixtures comprising at least 50% by volume tertiary butyl styrene, and the balance of a said mixture being any of styrene, monochlorostyrene or vinyl toluene, and
Claim 5
Dependent Claim
230 words
a uniform dispersion comprising by weight, a. 25 to 60 parts of an unsaturated polyester condensation product of a linear, aliphatic, alpha, beta-unsaturated dicarboxylic acid and/or anhydride having from four to six carbon atoms and a polyhydric alcohol, said condensation product having an acid number in the range of 5 to 40, and b. 5 parts to 20 parts of a polymEr composition consisting of, by weight 0 to 50 parts of a rigid thermoplastic polymer having a glass transition temperature greater than 30* C., and 50 to 100 parts of an ABA type block copolymer having A and B segments, with said A segments being repeating mer units of a material, which if homopolymerized would produce a rigid thermoplastic polymer having a glass transition temperature above 30* C., and said B segments being repeating mer units of a material, which if homopolymerized would produce a flexible, elastomeric polymer having a glass transition temperature below 10* C., said block copolymer having a B to A plus B weight ratio ranging from 0.5 to 0.8 with (a) and (b) being completely dissolved in c. from 40 to 60 parts of a monomeric copolymerizable diluent selected from the group consisting of tertiary butyl styrene, and mixtures comprising at least 50% by volume tertiary butyl styrene and the balance of a said mixture being any of styrene, or monochlorostyrene, or vinyl toluene, and
Claim 6
Dependent Claim
230 words
a uniform dispersion comprising by weight, a. 25 to 60 parts of an unsaturated polyester condensation product of a linear, aliphatic, alpha, beta-unsaturated dicarboxylic acid and/or anhydride having from four to six carbon atoms and a polyhydric alcohol, said condensation product having an acid number in the range of 5 to 40, and b. 5 parts to 20 parts of a polymEr composition consisting of, by weight 0 to 50 parts of a rigid thermoplastic polymer having a glass transition temperature greater than 30* C., and 50 to 100 parts of an ABA type block copolymer having A and B segments, with said A segments being repeating mer units of a material, which if homopolymerized would produce a rigid thermoplastic polymer having a glass transition temperature above 30* C., and said B segments being repeating mer units of a material, which if homopolymerized would produce a flexible, elastomeric polymer having a glass transition temperature below 10* C., said block copolymer having a B to A plus B weight ratio ranging from 0.5 to 0.8 with (a) and (b) being completely dissolved in c. from 40 to 60 parts of a monomeric copolymerizable diluent selected from the group consisting of tertiary butyl styrene, and mixtures comprising at least 50% by volume tertiary butyl styrene and the balance of a said mixture being any of styrene, or monochlorostyrene, or vinyl toluene, and
Claim 7
Dependent Claim
231 words
A fiber reinforced molded article formed by heating under pressure a mixture comprising by weight: 25 to 60 parts of an unsaturated polyester formed from a linear aliphatic alpha, beta-unsaturated dicarboxylic acid and/or anhydride having from four to six carbon atoms and a polyhydric alcohol, said polyester having an acid number of from 5 to 40; and 5 to 20 parts of a polymer composition consisting by weight of 0 to 50 parts of a thermoplastic polymer having a glass transition temperature above 30* C.; and 50 parts to 100 parts of an ABA type block copolymer having A and B segments with said A segments being made up substantially of repeating styrene units and said B segments being made up substantially of either repeating butadiene or isoprene units, or randomly mixed ethylene and propylene units, said block copolymer having a B to A plus B weight ratio of 0.5 to 0.8; and 40 to 60 parts of a monomeric copolymerizable diluent selected from the group consisting of tertiary butyl styrene, and mixtures of at least 50% by volume tertiary butyl styrene and the balance of a said mixture being any of styrene, or monochlorostyrene, or vinyl toluene, and 50 to 100 parts of a fibrous reinforcement filler; and 100 to 180 parts of a mineral filler, with said polyester and polymer compositions all being initially uniformly dispersed in said diluent.
Claim 8
Dependent Claim
231 words
A fiber reinforced molded article formed by heating under pressure a mixture comprising by weight: 25 to 60 parts of an unsaturated polyester formed from a linear aliphatic alpha, beta-unsaturated dicarboxylic acid and/or anhydride having from four to six carbon atoms and a polyhydric alcohol, said polyester having an acid number of from 5 to 40; and 5 to 20 parts of a polymer composition consisting by weight of 0 to 50 parts of a thermoplastic polymer having a glass transition temperature above 30* C.; and 50 parts to 100 parts of an ABA type block copolymer having A and B segments with said A segments being made up substantially of repeating styrene units and said B segments being made up substantially of either repeating butadiene or isoprene units, or randomly mixed ethylene and propylene units, said block copolymer having a B to A plus B weight ratio of 0.5 to 0.8; and 40 to 60 parts of a monomeric copolymerizable diluent selected from the group consisting of tertiary butyl styrene, and mixtures of at least 50% by volume tertiary butyl styrene and the balance of a said mixture being any of styrene, or monochlorostyrene, or vinyl toluene, and 50 to 100 parts of a fibrous reinforcement filler; and 100 to 180 parts of a mineral filler, with said polyester and polymer compositions all being initially uniformly dispersed in said diluent.
Claim 9
Dependent Claim
9 words
100 parts to 180 parts of a mineral filler.
Claim 10
Dependent Claim
9 words
100 parts to 180 parts of a mineral filler.
Claim 11
Dependent Claim
10 words
A fiber filler polyester thermosetting moldable composition comprising by weight:
Claim 12
Dependent Claim
10 words
A fiber filler polyester thermosetting moldable composition comprising by weight:
Claim 13
Dependent Claim
9 words
100 parts to 180 parts of a mineral filler.
Claim 14
Dependent Claim
9 words
100 parts to 180 parts of a mineral filler.
Claim 15
Dependent Claim
10 words
A fiber filler polyester thermosetting moldable composition comprising by weight:
Claim 16
Dependent Claim
10 words
A fiber filler polyester thermosetting moldable composition comprising by weight:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |