Creping Release Agents
Disclosed is a novel composition comprising (a) 50-98 parts of hydrocarbon oil, (b) 1-40 parts of emulsifier, and (c) 1-10 parts of a non-curing hydrocarbon polymer. Also disclosed is a method of reducing adhesion to the surface of equipment used in paper manufacture or in paper converting processes, comprising applying to the surface the disclosed novel composition.
1 . A composition comprising:
(a) 50-98 parts of hydrocarbon oil,
(b) 1-40 parts of emulsifier, and
(c) 1-10 parts of a non-curing hydrocarbon polymer.
2 . The composition of claim 1 wherein at least one hydrocarbon oil is selected from the group consisting of white oils, mineral oils, petroleum distillates or combinations thereof.
3 . The composition of claim 1 wherein the non-curing hydrocarbon polymer has the formula
or hydrogenates thereof, wherein R 1 through R 5 are hydrogen or —CH 3 , with at least one of R 1 through R 4 being —CH 3 , and n is a number such that the number average molecular weight of the hydrocarbon polymer is from 50 to 3000.
4 . The composition of claim 3 wherein the non-curing hydrocarbon polymer is a polybutene resulting from isobutylene/butene copolymerization or hydrogenates thereof.
5 . The composition of claim 1 wherein the non-curing hydrocarbon polymer is a polybutene resulting from isobutylene/butene copolymerization or hydrogenates thereof.
6 . The composition of claim 4 wherein the composition contains less than about 8% polybutene.
7 . A method for creping paper webs comprising the steps of:
a) applying the composition of claim 1 to the surface of a creping cylinder,
b) pressing the paper web against the drying surface to adhere the web to the drying surface, and
c) dislodging the web from the drying surface with a creping device to crepe the paper web.
8 . The method of claim 7 wherein at least one hydrocarbon oil is selected from the group consisting of white oils, mineral oils, petroleum distillates or combinations thereof.
9 . The method of claim 7 wherein the non-curing hydrocarbon polymer has the formula
or hydrogenates thereof, wherein R 1 through R 5 are hydrogen or —CH 3 , with at least one of R 1 through R 4 being —CH 3 , and n is a number such that the number average molecular weight of the hydrocarbon polymer is from 50 to 3000.
10 . The method of claim 9 wherein the non-curing hydrocarbon polymer is a polybutene resulting from isobutylene/butene copolymerization or hydrogenates thereof.
11 . The method of claim 10 wherein the composition contains less than about 8% polybutene.
12 . The composition of claim 7 wherein the non-curing hydrocarbon polymer is a polybutene resulting from isobutylene/butene copolymerization or hydrogenates thereof.
13 . The composition of claim 12 wherein the composition contains less than about 8% polybutene.