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US3916060A Expired / Lapsed US ⏱️ 0.0 years remaining

Fiber modified polyurethane foam for ballistic protection

Assignee: National Aeronautics and Space Administration
•
Filing: 1973-09-19
•
Granted: 1975-10-28
•
Expires: 1993-09-19
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Abstract

Abstract A closed cell, semi-rigid, fiber-loaded, self-extinguishing ballistic resistant foam and the method for making it is disclosed. The main structure of the material is a semi-rigid polyurethane foam in which are incorporated fiber strands oriented parallel to the surface. Preferably the fibers are glass. Other materials may be added such as fire-retardant materials.

Inventors

  • 👤 Richard H Fish
  • 👤 John A Parker
  • 👤 Robert W Rosser

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 16:31
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0085; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946; Y10T428/249953; Y10T428/249976; Y10T428/249986; Y10T428/249987

Claims Analysis

Total Claims: 89
Claim 1
Independent Claim 49 words
A FIBER MODIFIED CLOSED-CELL SEMI-RIGID POLURETHANE FOAM MATRIX FOR BALLISTIC AND FIRE PROTECTION PREPARED BY: A. SPRAYING FROM A NOZZLE ONTO A SUBSTRATE AT THE RATE OF 2-5 NO. PER MINUTE TO OBTAIN FIBER ORIENTATION PARALLEL TO THE SUBSTRATE SURFACE A REACTION MIXTURE COMPRISING: 1. A POLYCYCLIC AROMATIC POLYISOCYANATE,
Claim 2
Dependent Claim 49 words
A FIBER MODIFIED CLOSED-CELL SEMI-RIGID POLURETHANE FOAM MATRIX FOR BALLISTIC AND FIRE PROTECTION PREPARED BY: A. SPRAYING FROM A NOZZLE ONTO A SUBSTRATE AT THE RATE OF 2-5 NO. PER MINUTE TO OBTAIN FIBER ORIENTATION PARALLEL TO THE SUBSTRATE SURFACE A REACTION MIXTURE COMPRISING: 1. A POLYCYCLIC AROMATIC POLYISOCYANATE,
Claim 3
Dependent Claim 10 words
A POLYOL HAVING AN OH FUNCTIONALITY OF AT LEAST FOUR,
Claim 4
Dependent Claim 10 words
A POLYOL HAVING AN OH FUNCTIONALITY OF AT LEAST FOUR,
Claim 5
Dependent Claim 10 words
a polyol having an OH functionality of at least four,
Claim 6
Dependent Claim 10 words
a polyol having an OH functionality of at least four,
Claim 7
Dependent Claim 26 words
A foam of claim 1 wherein the polycyclic aromatic polyisocyanate comprises 31.5 - 32% active NCO groups and has a viscosity of 200 cps at 25*C.
Claim 8
Dependent Claim 22 words
a polyol comprising the addition product of a lower alkylene oxide and a glycoside having an OH functionality of at least four,
Claim 9
Dependent Claim 22 words
a polyol comprising the addition product of a lower alkylene oxide and a glycoside having an OH functionality of at least four,
Claim 10
Dependent Claim 10 words
a polyol having an OH functionality of at least four,
Claim 11
Dependent Claim 10 words
a polyol having an OH functionality of at least four,
Claim 12
Dependent Claim 21 words
a polyol comprising the reaction product of a lower alkylene oxide and a glycoside having an OH functionality greater than four,
Claim 13
Dependent Claim 21 words
a polyol comprising the reaction product of a lower alkylene oxide and a glycoside having an OH functionality greater than four,
Claim 14
Dependent Claim 4 words
a vinyl halide polymer,
Claim 15
Dependent Claim 4 words
a vinyl halide polymer,
Claim 16
Dependent Claim 4 words
a vinyl halide polymer,
Claim 17
Dependent Claim 4 words
a vinyl halide polymer,
Claim 18
Dependent Claim 26 words
A foam of claim 2 wherein the polyol is a lower alkylene oxide addition product of a glycoside having an OH functionality of at least four.
Claim 19
Dependent Claim 4 words
a vinylidene halide polymer,
Claim 20
Dependent Claim 4 words
a vinylidene halide polymer,
Claim 21
Dependent Claim 4 words
a vinyl halide polymer,
Claim 22
Dependent Claim 4 words
a vinyl halide polymer,
Claim 23
Dependent Claim 4 words
A VINYL HALIDE POLYMER,
Claim 24
Dependent Claim 4 words
A VINYL HALIDE POLYMER,
Claim 25
Dependent Claim 4 words
AN INORGANIC FLAME RETARDANT,
Claim 26
Dependent Claim 4 words
AN INORGANIC FLAME RETARDANT,
Claim 27
Dependent Claim 4 words
an inorganic flame retardant,
Claim 28
Dependent Claim 4 words
an inorganic flame retardant,
Claim 29
Dependent Claim 14 words
A foam of claim 1 wherein the inorganic flame retardant is tris (dichlorospropyl) phosphate.
Claim 30
Dependent Claim 7 words
tris (dichloroproply) phosphate as a flame retardant,
Claim 31
Dependent Claim 7 words
tris (dichloroproply) phosphate as a flame retardant,
Claim 32
Dependent Claim 7 words
as a flame retardant tris (dichloropropyl) phosphate,
Claim 33
Dependent Claim 7 words
as a flame retardant tris (dichloropropyl) phosphate,
Claim 34
Dependent Claim 3 words
tris (dichloropropyl) phosphate,
Claim 35
Dependent Claim 3 words
tris (dichloropropyl) phosphate,
Claim 36
Dependent Claim 3 words
a silicone surfactant,
Claim 37
Dependent Claim 3 words
a silicone surfactant,
Claim 38
Dependent Claim 3 words
a silicone surfactant.
Claim 39
Dependent Claim 3 words
a silicone surfactant.
Claim 40
Dependent Claim 3 words
a silicone surfactant,
Claim 41
Dependent Claim 3 words
a silicone surfactant,
Claim 42
Dependent Claim 21 words
A foam of claim 1 wherein the catalyst consists of 4.1% by weight triethylene diamine based on the weight of polyol.
Claim 43
Dependent Claim 3 words
a silicone surfactant,
Claim 44
Dependent Claim 3 words
a silicone surfactant,
Claim 45
Dependent Claim 17 words
A SILICONE SURFACTANT, 6. 4.1 - 5.1% BY WEIGHT TRIETHYLENE DIAMINE BASED ON THE WEIGHT OF POLYOL,
Claim 46
Dependent Claim 17 words
A SILICONE SURFACTANT, 6. 4.1 - 5.1% BY WEIGHT TRIETHYLENE DIAMINE BASED ON THE WEIGHT OF POLYOL,
Claim 47
Dependent Claim 13 words
4.1 - 5.1% by weight triethylene diamine based on the weight of polyol,
Claim 48
Dependent Claim 13 words
4.1 - 5.1% by weight triethylene diamine based on the weight of polyol,
Claim 49
Dependent Claim 38 words
A foam as in claim 3 wherein (3) is a poly (vinylidene chloride), (4) is tris (dichloropropyl) phosphate, (6) the catalyst consists of 4.1% by weight triethylene diamine based on the weight of polyol, and (7) is CC13F.
Claim 50
Dependent Claim 13 words
4.1 - 5.1% by weight triethylene diamine based on the weight of polyol,
Claim 51
Dependent Claim 13 words
4.1 - 5.1% by weight triethylene diamine based on the weight of polyol,
Claim 52
Dependent Claim 13 words
4.1 - 5.1% by weight triethylene diamine based on the weight of polyol,
Claim 53
Dependent Claim 13 words
4.1 - 5.1% by weight triethylene diamine based on the weight of polyol,
Claim 54
Dependent Claim 15 words
a catalyst consisting of 4.1% by weight triethylene diamine based on the weight of polyol,
Claim 55
Dependent Claim 15 words
a catalyst consisting of 4.1% by weight triethylene diamine based on the weight of polyol,
Claim 56
Dependent Claim 4 words
a blowing agent, and
Claim 57
Dependent Claim 4 words
a blowing agent, and
Claim 58
Dependent Claim 3 words
a blowing agent,
Claim 59
Dependent Claim 3 words
a blowing agent,
Claim 60
Dependent Claim 4 words
a blowing agent, and
Claim 61
Dependent Claim 4 words
a blowing agent, and
Claim 62
Dependent Claim 20 words
A foam as in claim 3 wherein the fibers are glass fibers of 1 to 1 1/2 inches in length.
Claim 63
Dependent Claim 4 words
a blowing agent, and
Claim 64
Dependent Claim 4 words
a blowing agent, and
Claim 65
Dependent Claim 53 words
A BLOWING AGENT, AND 8. 8.2 - 10.2% BY WEIGHT ETYLENE GLYCOL BASED ON THE WEIGHT OF POLYOL, B. BLENDING INTO SAID REACTION MIXTURE AS IT IS SPRAYED FROM THE SPRAY NOZZLE, CHOPPED FIBERS HAVING A LENGTH OF 3/4 TO 3 INCHES, C. ALLOWING THE SPRAYED REACTION MIXTURE TO FOAM AT AMBIENT CONDITIONS.
Claim 66
Dependent Claim 53 words
A BLOWING AGENT, AND 8. 8.2 - 10.2% BY WEIGHT ETYLENE GLYCOL BASED ON THE WEIGHT OF POLYOL, B. BLENDING INTO SAID REACTION MIXTURE AS IT IS SPRAYED FROM THE SPRAY NOZZLE, CHOPPED FIBERS HAVING A LENGTH OF 3/4 TO 3 INCHES, C. ALLOWING THE SPRAYED REACTION MIXTURE TO FOAM AT AMBIENT CONDITIONS.
Claim 67
Dependent Claim 48 words
8.2 - 10.2% by weight ethylene glYcol based on the weight of polyol; B. blending into said reaction mixture as it is sprayed from the spray nozzle, chopped fibers having a length of 3/4 to 3 inches; C. allowing the sprayed reaction mixture to foam at ambient conditions.
Claim 68
Dependent Claim 48 words
8.2 - 10.2% by weight ethylene glYcol based on the weight of polyol; B. blending into said reaction mixture as it is sprayed from the spray nozzle, chopped fibers having a length of 3/4 to 3 inches; C. allowing the sprayed reaction mixture to foam at ambient conditions.
Claim 69
Dependent Claim 34 words
A foam of claim 6 wherein the fibers are glass fibers of 1 1/2 to 1 1/4 inches in length and the ratio of fibers to polyurethane is from 5 to 30% by weight.
Claim 70
Dependent Claim 88 words
8.2 - 10.2% by weight ethylene glycol based on the weight of polyol; B. spraying reaction mixture A through a nozzle onto a substrate at the rate of 2-5- per minute so as to orient the fibers parallel to the substrate surface; C. blending into the sPray as the reaction mixture is sprayed from the nozzle, chopped fibers having a length of 3/4 to 3 inches, the ratio of fibers to resin varying from 5-30% by weight; D. allowing the sprayed reaction mixture to foam under ambient conditions.
Claim 71
Dependent Claim 88 words
8.2 - 10.2% by weight ethylene glycol based on the weight of polyol; B. spraying reaction mixture A through a nozzle onto a substrate at the rate of 2-5- per minute so as to orient the fibers parallel to the substrate surface; C. blending into the sPray as the reaction mixture is sprayed from the nozzle, chopped fibers having a length of 3/4 to 3 inches, the ratio of fibers to resin varying from 5-30% by weight; D. allowing the sprayed reaction mixture to foam under ambient conditions.
Claim 72
Dependent Claim 23 words
5-30% by weight based on the weight of foam matrix of glass fibers chopped to a length of 3/4 to 3 inches, and
Claim 73
Dependent Claim 23 words
5-30% by weight based on the weight of foam matrix of glass fibers chopped to a length of 3/4 to 3 inches, and
Claim 74
Dependent Claim 80 words
8.2% by weight ethylene glycol based on the weight of polyol. B. blending into the reaction mixture as it exists from the spray nozzle, 5-30% by weight based on the foam matrix weight of chopped glass fibers having a length of 1 1/8 to 1 1/4 inches: C. allowing the sprayed reaction mixture to foam under ambient conditions, wherein the foam exhibits a cream time of 6-12 seconds, rise time of 12-25 seconds, and tack free time of 30-60 seconds.
Claim 75
Dependent Claim 80 words
8.2% by weight ethylene glycol based on the weight of polyol. B. blending into the reaction mixture as it exists from the spray nozzle, 5-30% by weight based on the foam matrix weight of chopped glass fibers having a length of 1 1/8 to 1 1/4 inches: C. allowing the sprayed reaction mixture to foam under ambient conditions, wherein the foam exhibits a cream time of 6-12 seconds, rise time of 12-25 seconds, and tack free time of 30-60 seconds.
Claim 76
Dependent Claim 13 words
8.2 - 10.2% by weight ethylene glycol based on the weight of polyol.
Claim 77
Dependent Claim 13 words
8.2 - 10.2% by weight ethylene glycol based on the weight of polyol.
Claim 78
Dependent Claim 53 words
A foam of claim 3 which comprises the application of successive spray passes in order to increase the thickness of the foam matrix wherein the resin is allowed to cream and rise almost to its full extent between successive passes and on the final pass allowing the resin to cure until tack free.
Claim 79
Dependent Claim 42 words
A fiber modified closed-cell semi-rigid polyurethane foam matrix for ballistic and fire protection prepared by A. spraying from a nozzle onto a substrate at the rate of 2-5-per minute to obtain fiber orientation parallel to the substrate surface a reaction mixture comprising:
Claim 80
Dependent Claim 42 words
A fiber modified closed-cell semi-rigid polyurethane foam matrix for ballistic and fire protection prepared by A. spraying from a nozzle onto a substrate at the rate of 2-5-per minute to obtain fiber orientation parallel to the substrate surface a reaction mixture comprising:
Claim 81
Dependent Claim 21 words
A process for making a fiber modified polyurethane matrix for ballistic and fire protection comprising: A. mixing a reaction mixture comprising
Claim 82
Dependent Claim 21 words
A process for making a fiber modified polyurethane matrix for ballistic and fire protection comprising: A. mixing a reaction mixture comprising
Claim 83
Dependent Claim 27 words
A process as in claim 11 wherein the polyol is a lower alkylene oxide addition product of a glycoside having an OH functionality of at least four.
Claim 84
Dependent Claim 22 words
A process as in claim 11 wherein the catalyst consists of 4.1% by weight triethylene diamine based on the weight of polyol.
Claim 85
Dependent Claim 19 words
A process as in claim 13 wherein the chopped fibers are 1 1/8 to 1 1/4 inches in length.
Claim 86
Dependent Claim 51 words
A process as in claim 13 comprising the application of successive spray passes in order to increase the thickness of foam wherein the resin is allowed to cream and rise almost to its full extent between successive passes and on the final pass allowing the resin to cure until tack free.
Claim 87
Dependent Claim 38 words
A fiber modified polyurethane foam matrix for ballistic and fire protection prepared by spraying onto a substrate at the rate of 2-5 No. per minute to obtain fiber orientation parallel to the substrate surface a reaction mixture comprising:
Claim 88
Dependent Claim 38 words
A fiber modified polyurethane foam matrix for ballistic and fire protection prepared by spraying onto a substrate at the rate of 2-5 No. per minute to obtain fiber orientation parallel to the substrate surface a reaction mixture comprising:
Claim 89
Dependent Claim 19 words
A foam as in claim 16 wherein the chopped fibers are 1 1/8 to 1 1/4 inches in length.

References Cited (Backward Citations)

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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) 1978-10-27 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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