ASPHALT-BASED REACTIVE HOT MELT POLYURETHANE ADHESIVE

1 - 18 . (canceled)

19 . A method of adhering an interply roof membrane to another roof membrane or to a roof deck substrate comprising:

a) applying a liquid hot melt adhesive to said roof membrane or said roof deck, said hot-melt adhesive comprising a blend of a) hot melt polyurethane and b) petroleum liquid selected from the group consisting of asphalt, modified asphalt, bitumen, modified bitumen, coal-tar, modified coal tar, or mixtures thereof; and,

b) applying said interply roof membrane to said roof membrane or said roof deck, said interply of roof membrane applied to said roof membrane or said roof deck prior to a complete curing of said hot melt polyurethane in said hot melt adhesive.

20 . The method as defined in claim 19 , wherein said interply roof membrane is a white reflective membrane, a flexible solar panel, or a modified bitumen roof membrane.

21 . The method as defined in claim 19 , wherein said interply roof membrane secured to said roof membrane at a manufacturing site and rolled into a roll of connected membrane.

22 . The method as defined in claim 22 , wherein said interply roof membrane and said roof membrane are conveyed through at least one set of pressing rollers, at least one drum roller, or combinations thereof to press said interply roof membrane to said roof membrane prior to the complete curing of said hot melt polyurethane in said hot melt adhesive.

23 . The method as defined in claim 19 , wherein said hot melt adhesive comprises:

Diisocyanate and/or polyisocynate

5-50 wt %

Petroleum Liquid

5-80 wt %

Polyester-polyol, polypropylene glycol,

5-90 wt %

polybutylene glycol,

olefinically unsaturated monomers,

and/or alkylene diols.

24 . The method as defined in claim 19 , including the step of heating said hot melt adhesive to a temperature of greater than 130° F. so as to liquefy said hot melt adhesive prior to applying said hot melt adhesive to said roof membrane or said roof deck.

25 . The method as defined in claim 19 , wherein said petroleum liquid has a softening point of at least about 130° F. and a penetration value of about 2-30.

26 . The method as defined in claim 19 , wherein said hot melt polyurethane includes a) diisocyanate, polyisocynate, or mixtures thereof, and b) polyester-polyol, polypropylene glycol, polybutylene glycol, olefinically unsaturated monomers, alkylene diols, or mixtures thereof.

27 . The method as defined in claim 26 , wherein said hot melt polyurethane includes an acid stabilizer, a catalyst, a tackifying agent, or mixtures thereof.

28 . The method as defined in claim 26 , wherein said petroleum liquid has a softening point of at least about 130° F. and a penetration value of about 2-30.

29 . The method as defined in claim 26 , wherein a weight percent of said polyester-polyol, polypropylene glycol, polybutylene glycol, olefinically unsaturated monomers, alkylene diols, or mixtures thereof is greater than a weight percent of said diisocyanate, polyisocynate, or mixtures thereof.

30 . The method as defined in claim 29 , wherein a weight percent of said polyester-polyol, polypropylene glycol, polybutylene glycol, olefinically unsaturated monomers, alkylene diols, or mixtures thereof is greater than a weight percent of said petroleum liquid.

31 . The method as defined in claim 30 , wherein a weight percent of said polyester-polyol, polypropylene glycol, polybutylene glycol, olefinically unsaturated monomers, alkylene diols, or mixtures thereof is greater than a combined weight percent of said petroleum liquid and said diisocyanate, polyisocynate, or mixtures thereof.

32 . The method as defined in claim 19 , comprising:

Diisocyanate and/or polyisocynate

10-45 wt %

Petroleum Liquid

 5-70 wt %

Polyester-polyol, polypropylene glycol,

10-85 wt %

polybutylene glycol,

olefinically unsaturated monomers,

and/or alkylene diols.

33 . The method as defined in claim 19 , comprising:

Acid stabilizer

up to 2

wt %

Diisocyanate and/or polyisocynate

10-40

wt %

Petroleum Liquid

5-65

wt %

Catalyst

up to 5

wt %

Polyester-polyol, polypropylene glycol,

15-85

wt %

polybutylene glycol,

olefinically unsaturated monomers,

and/or alkylene diols

Tackifying resin

up to 15

wt %.

34 . The method as defined in claim 19 , comprising:

Acid stabilizer

up to 1

wt %

Aromatic diisocyanate

10-35

wt %

and/or aromatic polyisocynate

Petroleum Liquid

5-65

wt %

Catalyst

up to 3

wt %

Polyester-polyol, polypropylene glycol,

10-85

wt %

polybutylene glycol,

olefinically unsaturated monomers,

and/or alkylene diols

Tackifying resin

up to 10

wt %.

35 . The method as defined in claim 19 , comprising:

Acid stabilizer

up to 1

wt %

Catalyst

up to 3

wt %

Propylene Glycol (500-3000 MW)

15-80

wt. %

Polyester Polyol

10-30

wt. %

MDI

15-30

wt %

Type I-III Asphalt

5-60

wt. %

Tackifying resin

up to 10

wt %.

36 . The method as defined in claim 19 , comprising:

Acid stabilizer

up to 0.8

wt %

Catalyst

up to 2

wt %

Propylene Glycol (800-1200 MW)

20-30

wt. %

Propylene Glycol (1800-2400 MW)

20-30

wt. %

Polyester Polyol

15-25

wt. %

MDI

10-20

wt %

Type I-III Asphalt

5-35

wt. %

Tackifying resin

up to 8

wt %.

37 . The method as defined in claim 19 , comprising:

Acid stabilizer

0.005-0.5

wt %

Catalyst

0.005-1.5

wt %

Propylene Glycol (800-1200 MW)

22-27

wt. %

Propylene Glycol (1800-2400 MW)

22-27

wt. %

Polyester Polyol

20-23

wt. %

MDI

15-18

wt %

Type III Asphalt

5-21

wt. %

Tackifying resin

0.1-8

wt %.

38 . The method as defined in claim 19 , comprising:

Acid stabilizer

0.01-0.4

wt %

Catalyst

0.005-1

wt %

Propylene Glycol (800-1200 MW)

10-25

wt. %

Propylene Glycol (1800-2400 MW)

10-25

wt. %

Polyester Polyol

10-20

wt. %

Acrylic Copolymer

10-25

wt. %

MDI

10-20

wt %

Type I-III Asphalt

5-50

wt. %

Tackifying resin

0.1-6

wt %.

39 . The method as defined in claim 19 , comprising:

Acid stabilizer

0.01-0.2

wt %

Catalyst

0.005-0.5

wt %

Propylene Glycol (800-1200 MW)

15-20

wt. %

Propylene Glycol (1800-2400 MW)

15-20

wt. %

Polyester Polyol

12-27

wt. %

Acrylic Copolymer

15-20

wt. %

MDI

15-18

wt %

Type III Asphalt

5-28

wt. %

Tackifying resin

0.2-6

wt %.